gemma: pkg/octree/vertex.go annotate

annotate pkg/octree/vertex.go @ 3655:a6c671abbc35 single-beam

Started with cleaning up the single beam import.

author	Sascha L. Teichmann <sascha.teichmann@intevation.de>
date	Thu, 13 Jun 2019 18:33:54 +0200
parents	01ce3ba9b0d0
children	71164b817d6e

rev	line source
1017 a244b18cb916 Added GNU Affero General Public License. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 988 diff changeset	1 // This is Free Software under GNU Affero General Public License v >= 3.0
a244b18cb916 Added GNU Affero General Public License. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 988 diff changeset	2 // without warranty, see README.md and license for details.
a244b18cb916 Added GNU Affero General Public License. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 988 diff changeset	3 //
a244b18cb916 Added GNU Affero General Public License. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 988 diff changeset	4 // SPDX-License-Identifier: AGPL-3.0-or-later
a244b18cb916 Added GNU Affero General Public License. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 988 diff changeset	5 // License-Filename: LICENSES/AGPL-3.0.txt
a244b18cb916 Added GNU Affero General Public License. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 988 diff changeset	6 //
a244b18cb916 Added GNU Affero General Public License. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 988 diff changeset	7 // Copyright (C) 2018 by via donau
a244b18cb916 Added GNU Affero General Public License. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 988 diff changeset	8 // – Österreichische Wasserstraßen-Gesellschaft mbH
a244b18cb916 Added GNU Affero General Public License. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 988 diff changeset	9 // Software engineering by Intevation GmbH
a244b18cb916 Added GNU Affero General Public License. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 988 diff changeset	10 //
a244b18cb916 Added GNU Affero General Public License. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 988 diff changeset	11 // Author(s):
a244b18cb916 Added GNU Affero General Public License. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 988 diff changeset	12 // * Sascha L. Teichmann <sascha.teichmann@intevation.de>
a244b18cb916 Added GNU Affero General Public License. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 988 diff changeset	13
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	14 package octree
674 120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	15
726 5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	16 import (
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	17 "bytes"
726 5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	18 "encoding/binary"
2529 45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	19 "fmt"
726 5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	20 "io"
795 bd5f38eb6153 Vertical Triangle intersection: Fixed function to determine where intersection point Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 792 diff changeset	21 "log"
726 5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	22 "math"
768 3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	23 "sort"
2471 63475c8e710e Moved WKB constants to own package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2466 diff changeset	24
63475c8e710e Moved WKB constants to own package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2466 diff changeset	25 "gemma.intevation.de/gemma/pkg/wkb"
726 5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	26 )
674 120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	27
726 5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	28 type (
2572 7686c7c23506 Morphological differences: Moved some code into octree package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2529 diff changeset	29 Point struct {
7686c7c23506 Morphological differences: Moved some code into octree package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2529 diff changeset	30 X float64
7686c7c23506 Morphological differences: Moved some code into octree package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2529 diff changeset	31 Y float64
7686c7c23506 Morphological differences: Moved some code into octree package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2529 diff changeset	32 }
7686c7c23506 Morphological differences: Moved some code into octree package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2529 diff changeset	33
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	34 // Vertex is a 3D vertex.
726 5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	35 Vertex struct {
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	36 X float64
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	37 Y float64
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	38 Z float64
726 5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	39 }
5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	40
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	41 // Triangle is a triangle consisting of three vertices.
726 5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	42 Triangle [3]Vertex
5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	43
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	44 // Line is a line defined by first vertex on that line
f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	45 // and the second being the direction.
726 5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	46 Line [2]Vertex
5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	47
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	48 // MultiPointZ is a set of vertices.
f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	49 MultiPointZ []Vertex
f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	50
f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	51 // LineStringZ is a line string formed of vertices.
f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	52 LineStringZ []Vertex
f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	53
f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	54 // MultiLineStringZ is a set of line strings.
726 5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	55 MultiLineStringZ []LineStringZ
774 c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	56
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	57 // Box2D is 2D area from (X1, Y1) to (X2, Y2).
774 c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	58 Box2D struct {
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	59 X1 float64
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	60 Y1 float64
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	61 X2 float64
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	62 Y2 float64
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	63 }
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	64
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	65 // Plane2D is a 2D plane (a line in 2D space).
774 c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	66 Plane2D struct {
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	67 A float64
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	68 B float64
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	69 C float64
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	70 }
2466 a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	71
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	72 Plane3D struct {
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	73 A float64
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	74 B float64
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	75 C float64
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	76 D float64
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	77 }
726 5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	78 )
5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	79
2466 a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	80 func (t *Triangle) Plane3D() Plane3D {
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	81
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	82 v0 := t[1].Sub(t[0])
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	83 v1 := t[2].Sub(t[0])
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	84 n := v0.Cross(v1).Normalize()
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	85
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	86 // xnx+ yny+ z*nz + d = 0
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	87 // d = - (xnx+ yny + z*nz)
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	88 d := -t[0].Dot(n)
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	89 return Plane3D{
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	90 A: n.X,
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	91 B: n.Y,
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	92 C: n.Z,
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	93 D: d,
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	94 }
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	95 }
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	96
2494 a727e0426240 More on triangle/clipping polygon intersection. TODO: line segment / line segment intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2492 diff changeset	97 func (t *Triangle) BBox() Box2D {
a727e0426240 More on triangle/clipping polygon intersection. TODO: line segment / line segment intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2492 diff changeset	98 minX := math.Min(math.Min(t[0].X, t[1].X), t[2].X)
a727e0426240 More on triangle/clipping polygon intersection. TODO: line segment / line segment intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2492 diff changeset	99 maxX := math.Max(math.Max(t[0].X, t[1].X), t[2].X)
a727e0426240 More on triangle/clipping polygon intersection. TODO: line segment / line segment intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2492 diff changeset	100 minY := math.Min(math.Min(t[0].Y, t[1].Y), t[2].Y)
a727e0426240 More on triangle/clipping polygon intersection. TODO: line segment / line segment intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2492 diff changeset	101 maxY := math.Max(math.Max(t[0].Y, t[1].Y), t[2].Y)
a727e0426240 More on triangle/clipping polygon intersection. TODO: line segment / line segment intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2492 diff changeset	102 return Box2D{
a727e0426240 More on triangle/clipping polygon intersection. TODO: line segment / line segment intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2492 diff changeset	103 X1: minX, Y1: minY,
a727e0426240 More on triangle/clipping polygon intersection. TODO: line segment / line segment intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2492 diff changeset	104 X2: maxX, Y2: maxY,
a727e0426240 More on triangle/clipping polygon intersection. TODO: line segment / line segment intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2492 diff changeset	105 }
a727e0426240 More on triangle/clipping polygon intersection. TODO: line segment / line segment intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2492 diff changeset	106 }
a727e0426240 More on triangle/clipping polygon intersection. TODO: line segment / line segment intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2492 diff changeset	107
2466 a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	108 func (p Plane3D) Z(x, y float64) float64 {
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	109 // p.Ax + p.By + p.C*z + p.D = 0
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	110 return -(p.Ax + p.By + p.D) / p.C
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	111 }
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	112
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	113 func (v Vertex) Normalize() Vertex {
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	114 s := 1 / v.Length()
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	115 return Vertex{
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	116 X: s * v.X,
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	117 Y: s * v.Y,
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	118 Z: s * v.Z,
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	119 }
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	120 }
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	121
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	122 func (v Vertex) Dot(w Vertex) float64 {
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	123 return v.Xw.X + v.Yw.Y + v.Z*w.Z
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	124 }
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	125
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	126 func (v Vertex) Length() float64 {
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	127 return math.Sqrt(v.Dot(v))
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	128 }
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	129
2483 620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	130 func area(a, b, c Vertex) float64 {
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	131 return (b.Y-a.Y)(c.X-b.X) - (b.X-a.X)(c.Y-b.Y)
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	132 }
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	133
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	134 func inCircle(a, b, c, p Vertex) bool {
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	135 dx := a.X - p.X
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	136 dy := a.Y - p.Y
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	137 ex := b.X - p.X
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	138 ey := b.Y - p.Y
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	139 fx := c.X - p.X
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	140 fy := c.Y - p.Y
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	141
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	142 ap := dxdx + dydy
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	143 bp := exex + eyey
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	144 cp := fxfx + fyfy
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	145
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	146 return dx(eycp-bpfy)-dy(excp-bpfx)+ap(exfy-ey*fx) < 0
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	147 }
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	148
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	149 func circumradius(a, b, c Vertex) float64 {
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	150 dx := b.X - a.X
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	151 dy := b.Y - a.Y
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	152 ex := c.X - a.X
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	153 ey := c.Y - a.Y
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	154
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	155 bl := dxdx + dydy
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	156 cl := exex + eyey
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	157 d := dxey - dyex
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	158
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	159 x := (eybl - dycl) * 0.5 / d
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	160 y := (dxcl - exbl) * 0.5 / d
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	161
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	162 r := xx + yy
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	163
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	164 if bl == 0 \|\| cl == 0 \|\| d == 0 \|\| r == 0 {
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	165 return infinity
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	166 }
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	167
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	168 return r
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	169 }
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	170
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	171 func circumcenter(a, b, c Vertex) Vertex {
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	172 dx := b.X - a.X
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	173 dy := b.Y - a.Y
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	174 ex := c.X - a.X
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	175 ey := c.Y - a.Y
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	176
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	177 bl := dxdx + dydy
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	178 cl := exex + eyey
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	179 d := dxey - dyex
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	180
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	181 x := a.X + (eybl-dycl)*0.5/d
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	182 y := a.Y + (dxcl-exbl)*0.5/d
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	183
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	184 return Vertex{X: x, Y: y}
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	185 }
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	186
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	187 func polygonArea(points []Vertex) float64 {
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	188 var result float64
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	189 for i, p := range points {
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	190 q := points[(i+1)%len(points)]
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	191 result += (p.X - q.X) * (p.Y + q.Y)
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	192 }
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	193 return result / 2
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	194 }
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	195
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	196 func polygonPerimeter(points []Vertex) float64 {
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	197 if len(points) == 0 {
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	198 return 0
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	199 }
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	200 var result float64
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	201 q := points[len(points)-1]
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	202 for _, p := range points {
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	203 result += p.Distance2D(q)
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	204 q = p
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	205 }
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	206 return result
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	207 }
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	208
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	209 func (v Vertex) Distance2D(w Vertex) float64 {
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	210 return math.Hypot(v.X-w.X, v.Y-w.Y)
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	211 }
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	212
3650 01ce3ba9b0d0 Fixed generating of random points. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 3646 diff changeset	213 func (v Vertex) Distance(w Vertex) float64 {
01ce3ba9b0d0 Fixed generating of random points. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 3646 diff changeset	214 v = v.Sub(w)
01ce3ba9b0d0 Fixed generating of random points. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 3646 diff changeset	215 return math.Sqrt(v.Dot(v))
01ce3ba9b0d0 Fixed generating of random points. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 3646 diff changeset	216 }
01ce3ba9b0d0 Fixed generating of random points. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 3646 diff changeset	217
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	218 // Minimize adjust this vertex v to hold the minimum
f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	219 // values component-wise of v and w.
726 5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	220 func (v *Vertex) Minimize(w Vertex) {
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	221 if w.X < v.X {
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	222 v.X = w.X
674 120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	223 }
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	224 if w.Y < v.Y {
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	225 v.Y = w.Y
674 120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	226 }
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	227 if w.Z < v.Z {
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	228 v.Z = w.Z
674 120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	229 }
120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	230 }
120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	231
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	232 // Maximize adjust this vertex v to hold the maximum
f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	233 // values component-wise of v and w.
726 5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	234 func (v *Vertex) Maximize(w Vertex) {
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	235 if w.X > v.X {
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	236 v.X = w.X
674 120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	237 }
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	238 if w.Y > v.Y {
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	239 v.Y = w.Y
674 120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	240 }
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	241 if w.Z > v.Z {
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	242 v.Z = w.Z
674 120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	243 }
120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	244 }
120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	245
2483 620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	246 func (v Vertex) SquaredDistance2D(w Vertex) float64 {
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	247 dx := v.X - w.X
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	248 dy := v.Y - w.Y
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	249 return dxdx + dydy
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	250 }
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	251
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	252 // Sub2D returns (v - w) component-wise.
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	253 func (v Vertex) Sub2D(w Vertex) Vertex {
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	254 return Vertex{
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	255 X: v.X - w.X,
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	256 Y: v.Y - w.Y,
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	257 }
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	258 }
620038ade708 Incorporated fogleman's fast Delaunay triangulation adjuted to our vertex model. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2472 diff changeset	259
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	260 // Sub returns (v - w) component-wise.
726 5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	261 func (v Vertex) Sub(w Vertex) Vertex {
5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	262 return Vertex{
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	263 v.X - w.X,
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	264 v.Y - w.Y,
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	265 v.Z - w.Z,
674 120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	266 }
120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	267 }
120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	268
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	269 // Add returns (v + w) component-wise.
726 5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	270 func (v Vertex) Add(w Vertex) Vertex {
5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	271 return Vertex{
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	272 v.X + w.X,
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	273 v.Y + w.Y,
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	274 v.Z + w.Z,
687 be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	275 }
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	276 }
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	277
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	278 // Scale returns s*v component-wise.
730 4c05bdbf8e4b Renamed scale in Vertex to uppercase to make it public. Sascha L. Teichmann <teichmann@intevation.de> parents: 729 diff changeset	279 func (v Vertex) Scale(s float64) Vertex {
726 5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	280 return Vertex{
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	281 s * v.X,
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	282 s * v.Y,
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	283 s * v.Z,
687 be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	284 }
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	285 }
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	286
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	287 // Interpolate returns a function that return s*v2 + v1
f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	288 // component-wise.
726 5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	289 func Interpolate(v1, v2 Vertex) func(Vertex) Vertex {
5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	290 v2 = v2.Sub(v1)
5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	291 return func(s Vertex) Vertex {
5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	292 return Vertex{
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	293 v2.X*s.X + v1.X,
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	294 v2.Y*s.Y + v1.Y,
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	295 v2.Z*s.Z + v1.Z,
674 120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	296 }
120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	297 }
120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	298 }
120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	299
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	300 // Less returns if one of v component is less than the
f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	301 // corresponing component in w.
1329 ea2143adc6d3 Named method recievers consistently to make golint happy. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1017 diff changeset	302 func (v Vertex) Less(w Vertex) bool {
ea2143adc6d3 Named method recievers consistently to make golint happy. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1017 diff changeset	303 return v.X < w.X \|\| v.Y < w.Y \|\| v.Z < w.Z
674 120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	304 }
687 be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	305
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	306 // NewLine return a line of point/direction.
726 5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	307 func NewLine(p1, p2 Vertex) Line {
5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	308 return Line{
5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	309 p2.Sub(p1),
687 be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	310 p1,
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	311 }
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	312 }
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	313
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	314 // Eval returns the vertex for t*l[0] + l[1].
726 5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	315 func (l Line) Eval(t float64) Vertex {
730 4c05bdbf8e4b Renamed scale in Vertex to uppercase to make it public. Sascha L. Teichmann <teichmann@intevation.de> parents: 729 diff changeset	316 return l[0].Scale(t).Add(l[1])
687 be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	317 }
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	318
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	319 // IntersectHorizontal returns the intersection point
f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	320 // for a given z value.
726 5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	321 func (l Line) IntersectHorizontal(h float64) Vertex {
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	322 t := (h - l[1].Z) / l[0].Z
726 5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	323 return l.Eval(t)
687 be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	324 }
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	325
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	326 func side(z, h float64) int {
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	327 switch {
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	328 case z < h:
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	329 return -1
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	330 case z > h:
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	331 return +1
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	332 }
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	333 return 0
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	334 }
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	335
2466 a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	336 func (v Vertex) Dot2(w Vertex) float64 {
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	337 return v.Xw.X + v.Yw.Y
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	338 }
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	339
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	340 func (t *Triangle) Contains(x, y float64) bool {
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	341 v0 := t[2].Sub(t[0])
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	342 v1 := t[1].Sub(t[0])
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	343 v2 := Vertex{X: x, Y: y}.Sub(t[0])
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	344
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	345 dot00 := v0.Dot2(v0)
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	346 dot01 := v0.Dot2(v1)
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	347 dot02 := v0.Dot2(v2)
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	348 dot11 := v1.Dot2(v1)
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	349 dot12 := v1.Dot2(v2)
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	350
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	351 // Compute barycentric coordinates
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	352 invDenom := 1 / (dot00dot11 - dot01dot01)
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	353 u := (dot11dot02 - dot01dot12) * invDenom
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	354 v := (dot00dot12 - dot01dot02) * invDenom
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	355
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	356 // Check if point is in triangle
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	357 return u >= 0 && v >= 0 && u+v < 1
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	358 }
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	359
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	360 // IntersectHorizontal calculates the line string that
f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	361 // results when cutting a triangle a a certain height.
f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	362 // Can be empty (on intersection),
f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	363 // one vertex (only touching an vertex) or
f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	364 // two vertices (real intersection).
726 5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	365 func (t *Triangle) IntersectHorizontal(h float64) LineStringZ {
687 be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	366 sides := [3]int{
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	367 side(t[0].Z, h),
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	368 side(t[1].Z, h),
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	369 side(t[2].Z, h),
687 be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	370 }
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	371
726 5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	372 var points LineStringZ
689 614135d69823 octree: prepare storing the lines to file in contouring tool. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 687 diff changeset	373
687 be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	374 for i := 0; i < 3; i++ {
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	375 j := (i + 1) % 3
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	376 si := sides[i]
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	377 sj := sides[j]
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	378
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	379 switch {
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	380 case si == 0 && sj == 0:
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	381 // both on plane
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	382 points = append(points, t[i], t[j])
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	383 case si == 0 && sj != 0:
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	384 // first on plane
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	385 points = append(points, t[i])
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	386 case si != 0 && sj == 0:
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	387 // second on plane
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	388 points = append(points, t[j])
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	389 case si == sj:
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	390 // both on same side
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	391 default:
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	392 // real intersection
726 5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	393 v := NewLine(t[i], t[j]).IntersectHorizontal(h)
687 be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	394 points = append(points, v)
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	395 }
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	396 }
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	397
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	398 return points
be90ab542aa7 octree: contouring: Do the math to calculate the intersection points of the triangles and the planes. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 674 diff changeset	399 }
726 5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	400
768 3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	401 func linearScale(x1, y1, x2, y2 float64) func(Vertex) float64 {
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	402 dx := x2 - x1
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	403 dy := y2 - y1
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	404
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	405 switch {
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	406 case dx != 0:
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	407 return func(v Vertex) float64 {
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	408 return (v.X - x1) / dx
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	409 }
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	410 case dy != 0:
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	411 return func(v Vertex) float64 {
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	412 return (v.Y - y1) / dy
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	413 }
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	414 default:
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	415 return func(Vertex) float64 {
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	416 return 0
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	417 }
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	418 }
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	419 }
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	420
3639 2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	421 func (ls LineStringZ) BBox() Box2D {
2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	422
2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	423 min := Vertex{math.MaxFloat64, math.MaxFloat64, math.MaxFloat64}
2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	424 max := Vertex{-math.MaxFloat64, -math.MaxFloat64, -math.MaxFloat64}
2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	425
2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	426 for _, v := range ls {
2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	427 min.Minimize(v)
2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	428 max.Maximize(v)
2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	429 }
2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	430
2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	431 return Box2D{
2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	432 X1: min.X,
2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	433 Y1: min.Y,
2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	434 X2: max.X,
2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	435 Y2: max.Y,
2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	436 }
2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	437 }
2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	438
2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	439 func (ls LineStringZ) Area() float64 {
3646 810b28f59b8b Generate random points for second mesh. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 3639 diff changeset	440 return polygonArea(ls)
3639 2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	441 }
2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	442
2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	443 func (ls LineStringZ) Reverse() {
2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	444 for i, j := 0, len(ls)-1; i < j; i, j = i+1, j-1 {
2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	445 ls[i], ls[j] = ls[j], ls[i]
2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	446 }
2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	447 }
2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	448
768 3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	449 func (ls LineStringZ) order(position func(Vertex) float64) {
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	450 type posVertex struct {
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	451 pos float64
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	452 v Vertex
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	453 }
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	454 positions := make([]posVertex, len(ls))
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	455 for i, v := range ls {
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	456 positions[i] = posVertex{position(v), v}
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	457 }
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	458 sort.Slice(positions, func(i, j int) bool {
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	459 return positions[i].pos < positions[j].pos
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	460 })
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	461 for i := range positions {
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	462 ls[i] = positions[i].v
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	463 }
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	464 }
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	465
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	466 // EpsEquals returns true if v and w are equal component-wise
f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	467 // with the values within a epsilon range.
768 3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	468 func (v Vertex) EpsEquals(w Vertex) bool {
769 ba2007b746ef Fixed nasty typo. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 768 diff changeset	469 const eps = 1e-5
768 3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	470 return math.Abs(v.X-w.X) < eps &&
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	471 math.Abs(v.Y-w.Y) < eps && math.Abs(v.Z-w.Z) < eps
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	472 }
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	473
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	474 // JoinOnLine joins the the elements of a given multi line string
f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	475 // under the assumption that the segments are all on the line segment
f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	476 // from (x1, y1) to (x2, y2).
763 d05bc3e34338 More infrastructure for the octree driven cross section endpoint. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 730 diff changeset	477 func (mls MultiLineStringZ) JoinOnLine(x1, y1, x2, y2 float64) MultiLineStringZ {
768 3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	478
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	479 position := linearScale(x1, y1, x2, y2)
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	480
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	481 type posLineString struct {
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	482 pos float64
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	483 line LineStringZ
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	484 }
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	485
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	486 positions := make([]posLineString, 0, len(mls))
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	487
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	488 for _, ls := range mls {
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	489 if len(ls) == 0 {
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	490 continue
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	491 }
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	492 // order the atoms first
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	493 ls.order(position)
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	494 positions = append(positions, posLineString{position(ls[0]), ls})
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	495 }
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	496
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	497 sort.Slice(positions, func(i, j int) bool {
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	498 return positions[i].pos < positions[j].pos
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	499 })
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	500
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	501 out := make(MultiLineStringZ, 0, len(positions))
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	502
796 0cc97135717c More fixes to vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 795 diff changeset	503 var ignored int
0cc97135717c More fixes to vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 795 diff changeset	504
768 3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	505 for i := range positions {
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	506 curr := positions[i].line
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	507 if l := len(out); l > 0 {
796 0cc97135717c More fixes to vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 795 diff changeset	508 last := out[l-1]
0cc97135717c More fixes to vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 795 diff changeset	509
0cc97135717c More fixes to vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 795 diff changeset	510 if last[len(last)-1].EpsEquals(curr[0]) {
768 3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	511 out[l-1] = append(last[:len(last)-1], curr...)
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	512 continue
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	513 }
796 0cc97135717c More fixes to vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 795 diff changeset	514 if position(last[len(last)-1]) > position(curr[0]) {
0cc97135717c More fixes to vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 795 diff changeset	515 ignored++
0cc97135717c More fixes to vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 795 diff changeset	516 continue
0cc97135717c More fixes to vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 795 diff changeset	517 }
768 3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	518 }
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	519 out = append(out, curr)
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	520 }
3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	521
1691 de09bd3b5c05 Octree: Fixed a few golint quirks and normalized logging a bit. Sascha L. Teichmann <teichmann@intevation.de> parents: 1329 diff changeset	522 log.Printf("info: ignored parts: %d\n", ignored)
796 0cc97135717c More fixes to vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 795 diff changeset	523
768 3219e7e34953 Join neighbored linestring segments in octree cross sections and sort them along the input line. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 763 diff changeset	524 return out
763 d05bc3e34338 More infrastructure for the octree driven cross section endpoint. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 730 diff changeset	525 }
d05bc3e34338 More infrastructure for the octree driven cross section endpoint. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 730 diff changeset	526
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	527 // Write writes a Vertex as three 64 bit values in little endian order
f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	528 // to the given writer.
729 b0bd242ff821 Removed vertex duplicate. Sascha L. Teichmann <teichmann@intevation.de> parents: 727 diff changeset	529 func (v *Vertex) Write(w io.Writer) error {
b0bd242ff821 Removed vertex duplicate. Sascha L. Teichmann <teichmann@intevation.de> parents: 727 diff changeset	530 if err := binary.Write(
b0bd242ff821 Removed vertex duplicate. Sascha L. Teichmann <teichmann@intevation.de> parents: 727 diff changeset	531 w, binary.LittleEndian, math.Float64bits(v.X)); err != nil {
b0bd242ff821 Removed vertex duplicate. Sascha L. Teichmann <teichmann@intevation.de> parents: 727 diff changeset	532 return err
b0bd242ff821 Removed vertex duplicate. Sascha L. Teichmann <teichmann@intevation.de> parents: 727 diff changeset	533 }
b0bd242ff821 Removed vertex duplicate. Sascha L. Teichmann <teichmann@intevation.de> parents: 727 diff changeset	534 if err := binary.Write(
b0bd242ff821 Removed vertex duplicate. Sascha L. Teichmann <teichmann@intevation.de> parents: 727 diff changeset	535 w, binary.LittleEndian, math.Float64bits(v.Y)); err != nil {
b0bd242ff821 Removed vertex duplicate. Sascha L. Teichmann <teichmann@intevation.de> parents: 727 diff changeset	536 return err
b0bd242ff821 Removed vertex duplicate. Sascha L. Teichmann <teichmann@intevation.de> parents: 727 diff changeset	537 }
b0bd242ff821 Removed vertex duplicate. Sascha L. Teichmann <teichmann@intevation.de> parents: 727 diff changeset	538 return binary.Write(
b0bd242ff821 Removed vertex duplicate. Sascha L. Teichmann <teichmann@intevation.de> parents: 727 diff changeset	539 w, binary.LittleEndian, math.Float64bits(v.Z))
b0bd242ff821 Removed vertex duplicate. Sascha L. Teichmann <teichmann@intevation.de> parents: 727 diff changeset	540 }
b0bd242ff821 Removed vertex duplicate. Sascha L. Teichmann <teichmann@intevation.de> parents: 727 diff changeset	541
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	542 // Read fills this vertex with three 64 bit values stored as
f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	543 // little endian from the given reader.
729 b0bd242ff821 Removed vertex duplicate. Sascha L. Teichmann <teichmann@intevation.de> parents: 727 diff changeset	544 func (v *Vertex) Read(r io.Reader) error {
726 5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	545 var buf [8]byte
5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	546 b := buf[:]
5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	547 if _, err := io.ReadFull(r, b); err != nil {
5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	548 return nil
5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	549 }
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	550 v.X = math.Float64frombits(binary.LittleEndian.Uint64(b))
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	551 if _, err := io.ReadFull(r, b); err != nil {
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	552 return nil
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	553 }
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	554 v.Y = math.Float64frombits(binary.LittleEndian.Uint64(b))
726 5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	555 if _, err := io.ReadFull(r, b); err != nil {
5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	556 return nil
5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	557 }
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	558 v.Z = math.Float64frombits(binary.LittleEndian.Uint64(b))
726 5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	559 return nil
5af9ab39e715 Renamed a few types to uppercase names to prepare the move to the octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 718 diff changeset	560 }
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	561
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	562 // AsWKB returns the WKB representation of the given multi line string.
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	563 func (mls MultiLineStringZ) AsWKB() []byte {
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	564
924 c8146132059e Precalculate WKB size for MultiLineStringZ to avoid reallocations. Sascha L. Teichmann <teichmann@intevation.de> parents: 824 diff changeset	565 // pre-calculate size to avoid reallocations.
c8146132059e Precalculate WKB size for MultiLineStringZ to avoid reallocations. Sascha L. Teichmann <teichmann@intevation.de> parents: 824 diff changeset	566 size := 1 + 4 + 4
c8146132059e Precalculate WKB size for MultiLineStringZ to avoid reallocations. Sascha L. Teichmann <teichmann@intevation.de> parents: 824 diff changeset	567 for _, ml := range mls {
c8146132059e Precalculate WKB size for MultiLineStringZ to avoid reallocations. Sascha L. Teichmann <teichmann@intevation.de> parents: 824 diff changeset	568 size += 1 + 4 + 4 + len(ml)38
c8146132059e Precalculate WKB size for MultiLineStringZ to avoid reallocations. Sascha L. Teichmann <teichmann@intevation.de> parents: 824 diff changeset	569 }
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	570
924 c8146132059e Precalculate WKB size for MultiLineStringZ to avoid reallocations. Sascha L. Teichmann <teichmann@intevation.de> parents: 824 diff changeset	571 buf := bytes.NewBuffer(make([]byte, 0, size))
c8146132059e Precalculate WKB size for MultiLineStringZ to avoid reallocations. Sascha L. Teichmann <teichmann@intevation.de> parents: 824 diff changeset	572
2471 63475c8e710e Moved WKB constants to own package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2466 diff changeset	573 binary.Write(buf, binary.LittleEndian, wkb.NDR)
63475c8e710e Moved WKB constants to own package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2466 diff changeset	574 binary.Write(buf, binary.LittleEndian, wkb.MultiLineStringZ)
924 c8146132059e Precalculate WKB size for MultiLineStringZ to avoid reallocations. Sascha L. Teichmann <teichmann@intevation.de> parents: 824 diff changeset	575 binary.Write(buf, binary.LittleEndian, uint32(len(mls)))
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	576
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	577 for _, ml := range mls {
2471 63475c8e710e Moved WKB constants to own package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2466 diff changeset	578 binary.Write(buf, binary.LittleEndian, wkb.NDR)
63475c8e710e Moved WKB constants to own package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2466 diff changeset	579 binary.Write(buf, binary.LittleEndian, wkb.LineStringZ)
924 c8146132059e Precalculate WKB size for MultiLineStringZ to avoid reallocations. Sascha L. Teichmann <teichmann@intevation.de> parents: 824 diff changeset	580 binary.Write(buf, binary.LittleEndian, uint32(len(ml)))
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	581 for _, p := range ml {
924 c8146132059e Precalculate WKB size for MultiLineStringZ to avoid reallocations. Sascha L. Teichmann <teichmann@intevation.de> parents: 824 diff changeset	582 binary.Write(buf, binary.LittleEndian, math.Float64bits(p.X))
c8146132059e Precalculate WKB size for MultiLineStringZ to avoid reallocations. Sascha L. Teichmann <teichmann@intevation.de> parents: 824 diff changeset	583 binary.Write(buf, binary.LittleEndian, math.Float64bits(p.Y))
c8146132059e Precalculate WKB size for MultiLineStringZ to avoid reallocations. Sascha L. Teichmann <teichmann@intevation.de> parents: 824 diff changeset	584 binary.Write(buf, binary.LittleEndian, math.Float64bits(p.Z))
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	585 }
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	586 }
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	587
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	588 return buf.Bytes()
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	589 }
774 c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	590
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	591 // AsWKB2D returns the WKB representation of the given multi line string
f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	592 // leaving the z component out.
925 15bf101e1522 Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards. Sascha L. Teichmann <teichmann@intevation.de> parents: 924 diff changeset	593 func (mls MultiLineStringZ) AsWKB2D() []byte {
15bf101e1522 Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards. Sascha L. Teichmann <teichmann@intevation.de> parents: 924 diff changeset	594
15bf101e1522 Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards. Sascha L. Teichmann <teichmann@intevation.de> parents: 924 diff changeset	595 // pre-calculate size to avoid reallocations.
15bf101e1522 Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards. Sascha L. Teichmann <teichmann@intevation.de> parents: 924 diff changeset	596 size := 1 + 4 + 4
15bf101e1522 Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards. Sascha L. Teichmann <teichmann@intevation.de> parents: 924 diff changeset	597 for _, ml := range mls {
15bf101e1522 Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards. Sascha L. Teichmann <teichmann@intevation.de> parents: 924 diff changeset	598 size += 1 + 4 + 4 + len(ml)28
15bf101e1522 Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards. Sascha L. Teichmann <teichmann@intevation.de> parents: 924 diff changeset	599 }
15bf101e1522 Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards. Sascha L. Teichmann <teichmann@intevation.de> parents: 924 diff changeset	600
15bf101e1522 Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards. Sascha L. Teichmann <teichmann@intevation.de> parents: 924 diff changeset	601 buf := bytes.NewBuffer(make([]byte, 0, size))
15bf101e1522 Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards. Sascha L. Teichmann <teichmann@intevation.de> parents: 924 diff changeset	602
2471 63475c8e710e Moved WKB constants to own package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2466 diff changeset	603 binary.Write(buf, binary.LittleEndian, wkb.NDR)
63475c8e710e Moved WKB constants to own package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2466 diff changeset	604 binary.Write(buf, binary.LittleEndian, wkb.MultiLineString)
925 15bf101e1522 Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards. Sascha L. Teichmann <teichmann@intevation.de> parents: 924 diff changeset	605 binary.Write(buf, binary.LittleEndian, uint32(len(mls)))
15bf101e1522 Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards. Sascha L. Teichmann <teichmann@intevation.de> parents: 924 diff changeset	606
15bf101e1522 Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards. Sascha L. Teichmann <teichmann@intevation.de> parents: 924 diff changeset	607 for _, ml := range mls {
2471 63475c8e710e Moved WKB constants to own package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2466 diff changeset	608 binary.Write(buf, binary.LittleEndian, wkb.NDR)
63475c8e710e Moved WKB constants to own package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2466 diff changeset	609 binary.Write(buf, binary.LittleEndian, wkb.LineString)
925 15bf101e1522 Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards. Sascha L. Teichmann <teichmann@intevation.de> parents: 924 diff changeset	610 binary.Write(buf, binary.LittleEndian, uint32(len(ml)))
15bf101e1522 Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards. Sascha L. Teichmann <teichmann@intevation.de> parents: 924 diff changeset	611 for _, p := range ml {
15bf101e1522 Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards. Sascha L. Teichmann <teichmann@intevation.de> parents: 924 diff changeset	612 binary.Write(buf, binary.LittleEndian, math.Float64bits(p.X))
15bf101e1522 Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards. Sascha L. Teichmann <teichmann@intevation.de> parents: 924 diff changeset	613 binary.Write(buf, binary.LittleEndian, math.Float64bits(p.Y))
15bf101e1522 Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards. Sascha L. Teichmann <teichmann@intevation.de> parents: 924 diff changeset	614 }
15bf101e1522 Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards. Sascha L. Teichmann <teichmann@intevation.de> parents: 924 diff changeset	615 }
15bf101e1522 Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards. Sascha L. Teichmann <teichmann@intevation.de> parents: 924 diff changeset	616
15bf101e1522 Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards. Sascha L. Teichmann <teichmann@intevation.de> parents: 924 diff changeset	617 return buf.Bytes()
15bf101e1522 Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards. Sascha L. Teichmann <teichmann@intevation.de> parents: 924 diff changeset	618 }
15bf101e1522 Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards. Sascha L. Teichmann <teichmann@intevation.de> parents: 924 diff changeset	619
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	620 // Join joins two lines leaving the first of the second out.
928 0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	621 func (ls LineStringZ) Join(other LineStringZ) LineStringZ {
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	622 nline := make(LineStringZ, len(ls)+len(other)-1)
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	623 copy(nline, ls)
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	624 copy(nline[len(ls):], other[1:])
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	625 return nline
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	626 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	627
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	628 // Merge merges line segments of a given multi line string
f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	629 // by finding common start and end vertices.
928 0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	630 func (mls MultiLineStringZ) Merge() MultiLineStringZ {
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	631
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	632 var out MultiLineStringZ
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	633
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	634 min := Vertex{math.MaxFloat64, math.MaxFloat64, math.MaxFloat64}
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	635
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	636 for _, line := range mls {
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	637 for _, v := range line {
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	638 min.Minimize(v)
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	639 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	640 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	641
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	642 type point struct {
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	643 x int64
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	644 y int64
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	645 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	646
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	647 const precision = 1e7
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	648
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	649 quant := func(v Vertex) point {
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	650 return point{
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	651 x: int64(math.Round((v.X - min.X) * precision)),
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	652 y: int64(math.Round((v.Y - min.Y) * precision)),
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	653 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	654 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	655
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	656 heads := make(map[point]*[]LineStringZ)
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	657
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	658 for _, line := range mls {
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	659 if len(line) < 2 {
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	660 out = append(out, line)
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	661 continue
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	662 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	663 head := quant(line[0])
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	664 tail := quant(line[len(line)-1])
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	665 if head == tail { // its already a ring
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	666 out = append(out, line)
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	667 continue
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	668 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	669
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	670 if hs := heads[tail]; hs != nil {
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	671 l := len(*hs)
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	672 last := (*hs)[l-1]
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	673 if l == 1 {
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	674 delete(heads, tail)
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	675 } else {
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	676 (*hs)[l-1] = nil
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	677 hs = (hs)[:l-1]
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	678 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	679 line = line.Join(last)
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	680
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	681 if head == quant(line[len(line)-1]) { // its a ring
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	682 out = append(out, line)
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	683 continue
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	684 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	685 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	686
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	687 if hs := heads[head]; hs != nil {
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	688 hs = append(hs, line)
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	689 } else {
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	690 heads[head] = &[]LineStringZ{line}
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	691 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	692 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	693
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	694 again:
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	695 for head, lines := range heads {
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	696 for i, line := range *lines {
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	697 tail := quant(line[len(line)-1])
940 be7b83638ec8 Simplified line merging in generating contour lines. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 928 diff changeset	698 for hs := heads[tail]; hs != nil && len(*hs) > 0; hs = heads[tail] {
928 0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	699 l := len(*hs)
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	700 last := (*hs)[l-1]
940 be7b83638ec8 Simplified line merging in generating contour lines. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 928 diff changeset	701 (*hs)[l-1] = nil
be7b83638ec8 Simplified line merging in generating contour lines. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 928 diff changeset	702 hs = (hs)[:l-1]
928 0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	703 line = line.Join(last)
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	704
940 be7b83638ec8 Simplified line merging in generating contour lines. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 928 diff changeset	705 if tail = quant(line[len(line)-1]); head == tail { // its a ring
928 0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	706 out = append(out, line)
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	707 // remove from current lines
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	708 copy((lines)[i:], (lines)[i+1:])
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	709 (lines)[len(lines)-1] = nil
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	710 lines = (lines)[:len(*lines)-1]
940 be7b83638ec8 Simplified line merging in generating contour lines. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 928 diff changeset	711 goto again
928 0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	712 }
940 be7b83638ec8 Simplified line merging in generating contour lines. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 928 diff changeset	713 // overwrite in current lines
be7b83638ec8 Simplified line merging in generating contour lines. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 928 diff changeset	714 (*lines)[i] = line
928 0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	715 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	716 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	717 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	718
988 7dfd3db94e6d In preparation of persisting import jobs logging is done through an interface. Sascha L. Teichmann <teichmann@intevation.de> parents: 968 diff changeset	719 // rings := len(out)
928 0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	720
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	721 // The rest are open line strings.
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	722 for _, lines := range heads {
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	723 for _, line := range *lines {
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	724 out = append(out, line)
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	725 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	726 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	727
988 7dfd3db94e6d In preparation of persisting import jobs logging is done through an interface. Sascha L. Teichmann <teichmann@intevation.de> parents: 968 diff changeset	728 // log.Printf("segments before/after merge: %d/%d (%d rings)\n",
7dfd3db94e6d In preparation of persisting import jobs logging is done through an interface. Sascha L. Teichmann <teichmann@intevation.de> parents: 968 diff changeset	729 // len(mls), len(out), rings)
928 0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	730
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	731 return out
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	732 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	733
2492 10681749371d Implemented the BBox/clipping polygon test. TODO: triangle/clipping polygon test. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2483 diff changeset	734 func (a Box2D) Rect(interface{}) ([]float64, []float64) {
10681749371d Implemented the BBox/clipping polygon test. TODO: triangle/clipping polygon test. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2483 diff changeset	735 return []float64{a.X1, a.Y1}, []float64{a.X2, a.Y2}
10681749371d Implemented the BBox/clipping polygon test. TODO: triangle/clipping polygon test. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2483 diff changeset	736 }
10681749371d Implemented the BBox/clipping polygon test. TODO: triangle/clipping polygon test. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2483 diff changeset	737
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	738 // Intersects checks if two Box2Ds intersect.
774 c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	739 func (a Box2D) Intersects(b Box2D) bool {
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	740 return !(a.X2 < a.X1 \|\| a.X2 < b.X1 \|\|
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	741 a.Y2 < a.Y1 \|\| a.Y2 < b.Y1)
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	742 }
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	743
2466 a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	744 func (a Box2D) Contains(x, y float64) bool {
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	745 return a.X1 <= x && x <= a.X2 &&
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	746 a.Y1 <= y && y <= a.Y2
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	747 }
a1e751c08c56 Calculate difference on single core. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1692 diff changeset	748
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	749 // Xi returns the i-th x component.
774 c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	750 func (a Box2D) Xi(i int) float64 {
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	751 if i == 0 {
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	752 return a.X1
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	753 }
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	754 return a.X2
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	755 }
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	756
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	757 // Yi returns the i-th y component.
774 c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	758 func (a Box2D) Yi(i int) float64 {
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	759 if i == 0 {
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	760 return a.Y1
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	761 }
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	762 return a.Y2
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	763 }
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	764
2512 2768f74d54ab Added an STRTree for the triangulation. Should be better suited for filtering out the clipped triangles. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2494 diff changeset	765 func (a Box2D) Union(b Box2D) Box2D {
2768f74d54ab Added an STRTree for the triangulation. Should be better suited for filtering out the clipped triangles. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2494 diff changeset	766 return Box2D{
2768f74d54ab Added an STRTree for the triangulation. Should be better suited for filtering out the clipped triangles. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2494 diff changeset	767 X1: math.Min(a.X1, b.X1),
2768f74d54ab Added an STRTree for the triangulation. Should be better suited for filtering out the clipped triangles. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2494 diff changeset	768 Y1: math.Min(a.Y1, b.Y1),
2768f74d54ab Added an STRTree for the triangulation. Should be better suited for filtering out the clipped triangles. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2494 diff changeset	769 X2: math.Max(a.X2, b.X2),
2768f74d54ab Added an STRTree for the triangulation. Should be better suited for filtering out the clipped triangles. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2494 diff changeset	770 Y2: math.Max(a.Y2, b.Y2),
2768f74d54ab Added an STRTree for the triangulation. Should be better suited for filtering out the clipped triangles. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2494 diff changeset	771 }
2768f74d54ab Added an STRTree for the triangulation. Should be better suited for filtering out the clipped triangles. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2494 diff changeset	772 }
2768f74d54ab Added an STRTree for the triangulation. Should be better suited for filtering out the clipped triangles. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2494 diff changeset	773
3639 2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	774 func (a Box2D) Area() float64 {
2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	775 return (a.X2 - a.X1) * (a.Y2 - a.Y1)
2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	776 }
2a4216c81e7b Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2572 diff changeset	777
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	778 // NewPlane2D creates a new Plane2D from two given points.
774 c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	779 func NewPlane2D(x1, y1, x2, y2 float64) Plane2D {
778 9be20bd0f131 Fixed a bug with 2d planes (lines) found while working on line intersections. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 774 diff changeset	780 b := x2 - x1
9be20bd0f131 Fixed a bug with 2d planes (lines) found while working on line intersections. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 774 diff changeset	781 a := -(y2 - y1)
774 c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	782
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	783 l := math.Sqrt(aa + bb)
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	784 a /= l
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	785 b /= l
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	786
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	787 // ax1 + by1 + c = 0
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	788 c := -(ax1 + by1)
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	789 return Plane2D{a, b, c}
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	790 }
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	791
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	792 // Eval determines the distance of a given point
f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	793 // from the plane. The sign of the result indicates
f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	794 // the sideness.
774 c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	795 func (p Plane2D) Eval(x, y float64) float64 {
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	796 return p.Ax + p.By + p.C
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	797 }
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	798
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	799 const epsPlane = 1e-5
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	800
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	801 func sides(s int, x float64) int {
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	802 if math.Signbit(x) {
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	803 return s \| 2
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	804 }
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	805 return s \| 1
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	806 }
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	807
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	808 // IntersectsPlane checks if a Box2D intersects with
f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	809 // a given Plane2D.
774 c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	810 func (a Box2D) IntersectsPlane(p Plane2D) bool {
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	811 var s int
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	812 for i := 0; i < 2; i++ {
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	813 x := a.Xi(i)
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	814 for j := 0; j < 2; j++ {
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	815 y := a.Yi(j)
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	816 v := p.Eval(x, y)
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	817 if math.Abs(v) < epsPlane {
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	818 //log.Printf("on line")
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	819 return true
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	820 }
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	821 if s = sides(s, v); s == 3 {
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	822 //log.Printf("... on both sides (djt)")
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	823 return true
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	824 }
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	825 }
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	826 }
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	827 //log.Printf("side: %d\n", s)
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	828 return false
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	829 }
778 9be20bd0f131 Fixed a bug with 2d planes (lines) found while working on line intersections. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 774 diff changeset	830
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	831 // Cross calculates the cross product of two vertices.
1329 ea2143adc6d3 Named method recievers consistently to make golint happy. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1017 diff changeset	832 func (v Vertex) Cross(w Vertex) Vertex {
778 9be20bd0f131 Fixed a bug with 2d planes (lines) found while working on line intersections. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 774 diff changeset	833 return Vertex{
1329 ea2143adc6d3 Named method recievers consistently to make golint happy. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1017 diff changeset	834 v.Yw.Z - v.Zw.Y,
ea2143adc6d3 Named method recievers consistently to make golint happy. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1017 diff changeset	835 v.Zw.X - v.Xw.Z,
ea2143adc6d3 Named method recievers consistently to make golint happy. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1017 diff changeset	836 v.Xw.Y - v.Yw.X,
778 9be20bd0f131 Fixed a bug with 2d planes (lines) found while working on line intersections. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 774 diff changeset	837 }
9be20bd0f131 Fixed a bug with 2d planes (lines) found while working on line intersections. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 774 diff changeset	838 }
9be20bd0f131 Fixed a bug with 2d planes (lines) found while working on line intersections. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 774 diff changeset	839
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	840 // Intersection calcultes the 2D intersection point of
f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	841 // two Plane2Ds. If they do not intersect the returned
f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	842 // bool flags is set to false.
1329 ea2143adc6d3 Named method recievers consistently to make golint happy. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1017 diff changeset	843 func (p Plane2D) Intersection(o Plane2D) (float64, float64, bool) {
778 9be20bd0f131 Fixed a bug with 2d planes (lines) found while working on line intersections. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 774 diff changeset	844
1329 ea2143adc6d3 Named method recievers consistently to make golint happy. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1017 diff changeset	845 u1 := Vertex{p.A, p.B, p.C}
ea2143adc6d3 Named method recievers consistently to make golint happy. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1017 diff changeset	846 u2 := Vertex{o.A, o.B, o.C}
778 9be20bd0f131 Fixed a bug with 2d planes (lines) found while working on line intersections. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 774 diff changeset	847
1329 ea2143adc6d3 Named method recievers consistently to make golint happy. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1017 diff changeset	848 plane := u1.Cross(u2)
778 9be20bd0f131 Fixed a bug with 2d planes (lines) found while working on line intersections. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 774 diff changeset	849
1329 ea2143adc6d3 Named method recievers consistently to make golint happy. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1017 diff changeset	850 if plane.Z == 0 {
778 9be20bd0f131 Fixed a bug with 2d planes (lines) found while working on line intersections. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 774 diff changeset	851 return 0, 0, false
9be20bd0f131 Fixed a bug with 2d planes (lines) found while working on line intersections. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 774 diff changeset	852 }
9be20bd0f131 Fixed a bug with 2d planes (lines) found while working on line intersections. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 774 diff changeset	853
1329 ea2143adc6d3 Named method recievers consistently to make golint happy. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1017 diff changeset	854 return plane.X / plane.Z, plane.Y / plane.Z, true
778 9be20bd0f131 Fixed a bug with 2d planes (lines) found while working on line intersections. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 774 diff changeset	855 }
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	856
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	857 // VerticalLine is a 2D line segment.
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	858 type VerticalLine struct {
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	859 x1 float64
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	860 y1 float64
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	861 x2 float64
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	862 y2 float64
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	863
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	864 line Plane2D
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	865 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	866
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	867 // NewVerticalLine creates a new 2D line segment.
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	868 func NewVerticalLine(x1, y1, x2, y2 float64) *VerticalLine {
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	869 return &VerticalLine{
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	870 x1: x1,
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	871 y1: y1,
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	872 x2: x2,
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	873 y2: y2,
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	874 line: NewPlane2D(x1, y1, x2, y2),
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	875 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	876 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	877
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	878 func onPlane(x float64) bool { return math.Abs(x) < epsPlane }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	879
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	880 func relative(v1, v2 Vertex) func(x, y float64) float64 {
795 bd5f38eb6153 Vertical Triangle intersection: Fixed function to determine where intersection point Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 792 diff changeset	881 ls := linearScale(v1.X, v1.Y, v2.X, v2.Y)
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	882 return func(x, y float64) float64 {
795 bd5f38eb6153 Vertical Triangle intersection: Fixed function to determine where intersection point Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 792 diff changeset	883 return ls(Vertex{x, y, 0})
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	884 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	885 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	886
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	887 func interpolate(a, b float64) func(float64) float64 {
9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	888 return func(x float64) float64 {
9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	889 return (b-a)*x + a
9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	890 }
9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	891 }
9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	892
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	893 func linear(v1, v2 Vertex) func(t float64) Vertex {
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	894 return func(t float64) Vertex {
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	895 return Vertex{
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	896 (v2.X-v1.X)*t + v1.X,
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	897 (v2.Y-v1.Y)*t + v1.Y,
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	898 (v2.Z-v1.Z)*t + v1.Z,
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	899 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	900 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	901 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	902
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	903 func inRange(a float64) bool { return 0 <= a && a <= 1 }
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	904
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	905 // Intersection intersects a line segment with a triangle.
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	906 func (vl VerticalLine) Intersection(t Triangle) LineStringZ {
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	907
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	908 var out LineStringZ
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	909
815 01019d4c8359 Cross section: Made triangle intersection less spammy. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 813 diff changeset	910 //defer func() { log.Printf("length out: %d\n", len(out)) }()
796 0cc97135717c More fixes to vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 795 diff changeset	911
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	912 edges:
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	913 for i := 0; i < 3 && len(out) < 2; i++ {
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	914 j := (i + 1) % 3
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	915 edge := NewPlane2D(t[i].X, t[i].Y, t[j].X, t[j].Y)
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	916
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	917 s1 := edge.Eval(vl.x1, vl.y1)
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	918 s2 := edge.Eval(vl.x2, vl.y2)
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	919
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	920 o1 := onPlane(s1)
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	921 o2 := onPlane(s2)
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	922
815 01019d4c8359 Cross section: Made triangle intersection less spammy. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 813 diff changeset	923 // log.Printf("s1, s2: %t %t (%f %f)\n", o1, o2, s1, s2)
795 bd5f38eb6153 Vertical Triangle intersection: Fixed function to determine where intersection point Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 792 diff changeset	924
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	925 switch {
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	926 case o1 && o2:
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	927 pos := relative(t[i], t[j])
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	928 t1 := pos(vl.x1, vl.y1)
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	929 t2 := pos(vl.x2, vl.y2)
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	930
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	931 r1 := inRange(t1)
9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	932 r2 := inRange(t2)
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	933
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	934 switch {
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	935 case r1 && r2:
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	936 lin := linear(t[i], t[j])
9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	937 out = append(out, lin(t1), lin(t2))
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	938 return out
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	939
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	940 case !r1 && !r2: // the hole edge
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	941 out = append(out, t[i], t[j])
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	942 return out
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	943 case !r1:
789 d43e61044ad8 Fill in last remaining corner cases in vertical triangle interpolation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 788 diff changeset	944 if t1 < 0 {
d43e61044ad8 Fill in last remaining corner cases in vertical triangle interpolation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 788 diff changeset	945 // below first -> clip by first
d43e61044ad8 Fill in last remaining corner cases in vertical triangle interpolation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 788 diff changeset	946 lin := linear(t[i], t[j])
d43e61044ad8 Fill in last remaining corner cases in vertical triangle interpolation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 788 diff changeset	947 out = append(out, t[i], lin(t2))
d43e61044ad8 Fill in last remaining corner cases in vertical triangle interpolation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 788 diff changeset	948 } else {
d43e61044ad8 Fill in last remaining corner cases in vertical triangle interpolation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 788 diff changeset	949 // above second -> clip by second
d43e61044ad8 Fill in last remaining corner cases in vertical triangle interpolation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 788 diff changeset	950 lin := linear(t[i], t[j])
d43e61044ad8 Fill in last remaining corner cases in vertical triangle interpolation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 788 diff changeset	951 out = append(out, lin(t2), t[j])
d43e61044ad8 Fill in last remaining corner cases in vertical triangle interpolation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 788 diff changeset	952 }
d43e61044ad8 Fill in last remaining corner cases in vertical triangle interpolation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 788 diff changeset	953 return out
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	954 case !r2:
789 d43e61044ad8 Fill in last remaining corner cases in vertical triangle interpolation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 788 diff changeset	955 if t2 < 0 {
d43e61044ad8 Fill in last remaining corner cases in vertical triangle interpolation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 788 diff changeset	956 // below first -> clip by first
d43e61044ad8 Fill in last remaining corner cases in vertical triangle interpolation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 788 diff changeset	957 lin := linear(t[i], t[j])
d43e61044ad8 Fill in last remaining corner cases in vertical triangle interpolation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 788 diff changeset	958 out = append(out, t[i], lin(t1))
d43e61044ad8 Fill in last remaining corner cases in vertical triangle interpolation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 788 diff changeset	959 } else {
d43e61044ad8 Fill in last remaining corner cases in vertical triangle interpolation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 788 diff changeset	960 // above second -> clip by second
d43e61044ad8 Fill in last remaining corner cases in vertical triangle interpolation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 788 diff changeset	961 lin := linear(t[i], t[j])
d43e61044ad8 Fill in last remaining corner cases in vertical triangle interpolation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 788 diff changeset	962 out = append(out, lin(t1), t[j])
d43e61044ad8 Fill in last remaining corner cases in vertical triangle interpolation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 788 diff changeset	963 }
d43e61044ad8 Fill in last remaining corner cases in vertical triangle interpolation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 788 diff changeset	964 return out
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	965 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	966
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	967 case o1:
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	968 t1 := relative(t[i], t[j])(vl.x1, vl.y1)
9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	969 if !inRange(t1) {
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	970 continue edges
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	971 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	972 out = append(out, linear(t[i], t[j])(t1))
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	973
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	974 case o2:
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	975 t2 := relative(t[i], t[j])(vl.x2, vl.y2)
9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	976 if !inRange(t2) {
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	977 continue edges
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	978 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	979 out = append(out, linear(t[i], t[j])(t2))
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	980
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	981 default:
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	982 x, y, intersects := vl.line.Intersection(edge)
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	983 if !intersects {
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	984 continue edges
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	985 }
795 bd5f38eb6153 Vertical Triangle intersection: Fixed function to determine where intersection point Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 792 diff changeset	986
815 01019d4c8359 Cross section: Made triangle intersection less spammy. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 813 diff changeset	987 // log.Println("Intersection -----------------------------")
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	988 t1 := relative(t[i], t[j])(x, y)
815 01019d4c8359 Cross section: Made triangle intersection less spammy. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 813 diff changeset	989 // log.Printf("relative pos: %f\n", t1)
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	990 if !inRange(t1) {
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	991 continue edges
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	992 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	993
815 01019d4c8359 Cross section: Made triangle intersection less spammy. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 813 diff changeset	994 // log.Println("valid ***************")
795 bd5f38eb6153 Vertical Triangle intersection: Fixed function to determine where intersection point Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 792 diff changeset	995
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	996 z := interpolate(t[j].Z, t[i].Z)(t1)
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	997 n := Vertex{x, y, z}
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	998
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	999 if math.Signbit(s1) != math.Signbit(s2) {
815 01019d4c8359 Cross section: Made triangle intersection less spammy. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 813 diff changeset	1000 // log.Println("\ton different sides")
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1001 // different sides -> vertex on edge.
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	1002 out = append(out, n)
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1003 } else { // same side -> inside. Find peer
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1004 if len(out) > 0 { // we already have our peer
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1005 out = append(out, n)
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1006 return out
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1007 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1008
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1009 for k := 0; k < 3; k++ {
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1010 if k == i {
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1011 continue
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1012 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1013 l := (k + 1) % 3
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1014 other := NewPlane2D(t[k].X, t[k].Y, t[l].X, t[l].Y)
813 1a808929c2c5 Cross sections: Fixed problem that certain inputs don't deliver data. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 796 diff changeset	1015 xo, yo, intersects := vl.line.Intersection(other)
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1016 if !intersects {
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1017 continue
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1018 }
813 1a808929c2c5 Cross sections: Fixed problem that certain inputs don't deliver data. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 796 diff changeset	1019 t2 := relative(t[k], t[l])(xo, yo)
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	1020 if !inRange(t2) {
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1021 continue
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1022 }
813 1a808929c2c5 Cross sections: Fixed problem that certain inputs don't deliver data. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 796 diff changeset	1023 zo := interpolate(t[k].Z, t[l].Z)(t2)
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	1024
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1025 m := Vertex{xo, yo, zo}
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1026
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1027 var xn, yn, xf, yf float64
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1028
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1029 // Which is nearer to current edge?
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1030 if math.Abs(s1) < math.Abs(s2) {
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1031 xn, yn = vl.x1, vl.y1
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1032 xf, yf = vl.x2, vl.y2
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1033 } else {
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1034 xn, yn = vl.x2, vl.y2
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1035 xf, yf = vl.x1, vl.y1
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1036 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1037
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1038 if onPlane(other.Eval(xn, yn)) {
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1039 // triangle intersect in only point
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1040 // treat as no intersection
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	1041 break edges
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1042 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1043
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	1044 pos := relative(n, m)
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1045
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	1046 tzn := pos(xn, yn)
9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	1047 tzf := pos(xf, yf)
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1048
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	1049 if !inRange(tzn) {
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1050 // if near is out of range far is, too.
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1051 return out
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1052 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1053
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	1054 lin := interpolate(n.Z, m.Z)
9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	1055
9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	1056 if inRange(tzf) {
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1057 m.X = xf
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1058 m.Y = yf
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	1059 m.Z = lin(tzf)
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1060 } // else m is clipping
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1061
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1062 n.X = xn
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1063 n.Y = yn
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	1064 n.Z = lin(tzn)
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1065
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1066 out = append(out, n, m)
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1067 return out
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1068 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1069 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1070 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1071 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1072
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1073 // supress single point touches.
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1074 if len(out) == 1 {
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1075 out = out[:0]
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1076 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1077
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1078 return out
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	1079 }
959 6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	1080
1692 f4dcbe8941a1 Octree: Resolved the remaing golint issues with this package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 1691 diff changeset	1081 // AsWKB returns a WKB representation of the given point cloud.
959 6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	1082 func (mpz MultiPointZ) AsWKB() []byte {
6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	1083 size := 1 + 4 + 4 + len(mpz)(1+4+38)
6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	1084
6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	1085 buf := bytes.NewBuffer(make([]byte, 0, size))
6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	1086
2471 63475c8e710e Moved WKB constants to own package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2466 diff changeset	1087 binary.Write(buf, binary.LittleEndian, wkb.NDR)
63475c8e710e Moved WKB constants to own package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2466 diff changeset	1088 binary.Write(buf, binary.LittleEndian, wkb.MultiPointZ)
959 6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	1089 binary.Write(buf, binary.LittleEndian, uint32(len(mpz)))
6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	1090
2472 db0e4ab57977 Turn new point cloud into WKB form of MultiPointZ. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2471 diff changeset	1091 perPoint := bytes.NewBuffer(make([]byte, 0, 1+4))
db0e4ab57977 Turn new point cloud into WKB form of MultiPointZ. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2471 diff changeset	1092 binary.Write(perPoint, binary.LittleEndian, wkb.NDR)
db0e4ab57977 Turn new point cloud into WKB form of MultiPointZ. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2471 diff changeset	1093 binary.Write(perPoint, binary.LittleEndian, wkb.PointZ)
db0e4ab57977 Turn new point cloud into WKB form of MultiPointZ. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2471 diff changeset	1094 hdr := perPoint.Bytes()
db0e4ab57977 Turn new point cloud into WKB form of MultiPointZ. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2471 diff changeset	1095
959 6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	1096 for _, p := range mpz {
2472 db0e4ab57977 Turn new point cloud into WKB form of MultiPointZ. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2471 diff changeset	1097 buf.Write(hdr)
959 6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	1098 binary.Write(buf, binary.LittleEndian, math.Float64bits(p.X))
6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	1099 binary.Write(buf, binary.LittleEndian, math.Float64bits(p.Y))
6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	1100 binary.Write(buf, binary.LittleEndian, math.Float64bits(p.Z))
6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	1101 }
6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	1102
6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	1103 return buf.Bytes()
6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	1104 }
2529 45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1105
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1106 func (mpz *MultiPointZ) FromWKB(data []byte) error {
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1107
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1108 r := bytes.NewReader(data)
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1109
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1110 endian, err := r.ReadByte()
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1111
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1112 var order binary.ByteOrder
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1113
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1114 switch {
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1115 case err != nil:
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1116 return err
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1117 case endian == wkb.NDR:
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1118 order = binary.LittleEndian
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1119 case endian == wkb.XDR:
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1120 order = binary.BigEndian
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1121 default:
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1122 return fmt.Errorf("unknown byte order %x", endian)
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1123 }
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1124
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1125 var geomType uint32
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1126 err = binary.Read(r, order, &geomType)
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1127
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1128 switch {
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1129 case err != nil:
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1130 return err
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1131 case geomType != wkb.MultiPointZ:
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1132 return fmt.Errorf("unknown geometry type %x", geomType)
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1133 }
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1134
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1135 var numPoints uint32
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1136 if err := binary.Read(r, order, &numPoints); err != nil {
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1137 return err
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1138 }
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1139
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1140 points := make(MultiPointZ, numPoints)
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1141
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1142 for i := range points {
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1143 endian, err = r.ReadByte()
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1144
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1145 switch {
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1146 case err != nil:
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1147 return err
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1148 case endian == wkb.NDR:
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1149 order = binary.LittleEndian
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1150 case endian == wkb.XDR:
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1151 order = binary.BigEndian
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1152 default:
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1153 return fmt.Errorf("unknown byte order %x", endian)
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1154 }
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1155
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1156 err = binary.Read(r, order, &geomType)
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1157
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1158 switch {
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1159 case err != nil:
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1160 return err
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1161 case geomType != wkb.PointZ:
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1162 return fmt.Errorf("unknown geometry type %x", geomType)
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1163 }
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1164
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1165 var x, y, z uint64
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1166 if err = binary.Read(r, order, &x); err != nil {
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1167 return err
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1168 }
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1169 if err = binary.Read(r, order, &y); err != nil {
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1170 return err
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1171 }
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1172 if err = binary.Read(r, order, &z); err != nil {
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1173 return err
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1174 }
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1175 points[i] = Vertex{
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1176 X: math.Float64frombits(x),
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1177 Y: math.Float64frombits(y),
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1178 Z: math.Float64frombits(z),
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1179 }
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1180 }
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1181
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1182 *mpz = points
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1183
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1184 return nil
45d51a49f191 SR import: Use own triangulation and clipping when importing sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 2512 diff changeset	1185 }

Mercurial > gemma

annotate pkg/octree/vertex.go @ 3655:a6c671abbc35 single-beam