gemma: pkg/octree/vertex.go annotate

annotate pkg/octree/vertex.go @ 1017:a244b18cb916

Added GNU Affero General Public License. Adjusted the headers of the Go files to be AGPLv3.

author	Sascha L. Teichmann <sascha.teichmann@intevation.de>
date	Tue, 23 Oct 2018 18:15:14 +0200
parents	7dfd3db94e6d
children	ea2143adc6d3

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"
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	19 "io"
795 bd5f38eb6153 Vertical Triangle intersection: Fixed function to determine where intersection point Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 792 diff changeset	20 "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	21 "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	22 "sort"
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	23 )
674 120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	24
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	25 type (
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 Vertex struct {
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	27 X float64
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	28 Y float64
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	29 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	30 }
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	31
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	32 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	33
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	34 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	35
959 6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	36 MultiPointZ []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	37 LineStringZ []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	38 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	39
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	40 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	41 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	42 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	43 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	44 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	45 }
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	46
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	47 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	48 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	49 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	50 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	51 }
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	52 )
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	53
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	54 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	55 if w.X < v.X {
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	56 v.X = w.X
674 120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	57 }
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	58 if w.Y < v.Y {
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	59 v.Y = w.Y
674 120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	60 }
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	61 if w.Z < v.Z {
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	62 v.Z = w.Z
674 120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	63 }
120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	64 }
120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	65
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	66 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	67 if w.X > v.X {
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	68 v.X = w.X
674 120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	69 }
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	70 if w.Y > v.Y {
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	71 v.Y = w.Y
674 120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	72 }
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	73 if w.Z > v.Z {
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	74 v.Z = w.Z
674 120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	75 }
120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	76 }
120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 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 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	79 return Vertex{
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	80 v.X - w.X,
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	81 v.Y - w.Y,
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	82 v.Z - w.Z,
674 120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	83 }
120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	84 }
120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	85
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	86 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	87 return Vertex{
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	88 v.X + w.X,
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	89 v.Y + w.Y,
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	90 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	91 }
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	92 }
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	93
730 4c05bdbf8e4b Renamed scale in Vertex to uppercase to make it public. Sascha L. Teichmann <teichmann@intevation.de> parents: 729 diff changeset	94 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	95 return Vertex{
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	96 s * v.X,
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	97 s * v.Y,
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	98 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	99 }
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	100 }
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	101
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	102 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	103 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	104 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	105 return Vertex{
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	106 v2.X*s.X + v1.X,
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	107 v2.Y*s.Y + v1.Y,
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	108 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	109 }
120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	110 }
120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	111 }
120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	112
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	113 func (a Vertex) Less(b Vertex) bool {
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	114 return a.X < b.X \|\| a.Y < b.Y \|\| a.Z < b.Z
674 120a82bd9953 octree: Added loading frame for contour generation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	115 }
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	116
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	117 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	118 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	119 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	120 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	121 }
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	122 }
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	123
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	124 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	125 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	126 }
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	127
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	128 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	129 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	130 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	131 }
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	132
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	133 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	134 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	135 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	136 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	137 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	138 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	139 }
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	140 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	141 }
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	142
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	143 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	144 sides := [3]int{
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	145 side(t[0].Z, h),
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	146 side(t[1].Z, h),
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	147 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	148 }
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	149
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	150 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	151
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	152 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	153 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	154 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	155 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	156
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	157 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	158 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	159 // 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	160 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	161 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	162 // 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	163 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	164 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	165 // 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	166 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	167 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	168 // 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	169 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	170 // 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	171 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	172 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	173 }
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	174 }
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	175
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	176 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	177 }
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	178
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	179 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	180 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	181 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	182
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	183 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	184 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	185 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	186 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	187 }
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	188 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	189 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	190 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	191 }
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	192 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	193 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	194 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	195 }
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	196 }
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	197 }
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	198
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	199 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	200 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	201 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	202 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	203 }
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	204 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	205 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	206 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	207 }
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	208 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	209 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	210 })
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	211 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	212 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	213 }
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	214 }
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	215
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	216 func (v Vertex) EpsEquals(w Vertex) bool {
769 ba2007b746ef Fixed nasty typo. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 768 diff changeset	217 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	218 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	219 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	220 }
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	221
763 d05bc3e34338 More infrastructure for the octree driven cross section endpoint. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 730 diff changeset	222 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	223
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	224 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	225
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	226 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	227 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	228 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	229 }
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	230
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	231 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	232
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	233 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	234 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	235 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	236 }
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	237 // 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	238 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	239 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	240 }
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	241
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	242 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	243 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	244 })
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	245
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	246 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	247
796 0cc97135717c More fixes to vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 795 diff changeset	248 var ignored int
0cc97135717c More fixes to vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 795 diff changeset	249
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	250 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	251 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	252 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	253 last := out[l-1]
0cc97135717c More fixes to vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 795 diff changeset	254
0cc97135717c More fixes to vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 795 diff changeset	255 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	256 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	257 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	258 }
796 0cc97135717c More fixes to vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 795 diff changeset	259 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	260 ignored++
0cc97135717c More fixes to vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 795 diff changeset	261 continue
0cc97135717c More fixes to vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 795 diff changeset	262 }
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	263 }
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	264 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	265 }
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	266
796 0cc97135717c More fixes to vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 795 diff changeset	267 log.Printf("ignored parts: %d\n", ignored)
0cc97135717c More fixes to vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 795 diff changeset	268
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	269 return out
763 d05bc3e34338 More infrastructure for the octree driven cross section endpoint. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 730 diff changeset	270 }
d05bc3e34338 More infrastructure for the octree driven cross section endpoint. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 730 diff changeset	271
729 b0bd242ff821 Removed vertex duplicate. Sascha L. Teichmann <teichmann@intevation.de> parents: 727 diff changeset	272 func (v *Vertex) Write(w io.Writer) error {
b0bd242ff821 Removed vertex duplicate. Sascha L. Teichmann <teichmann@intevation.de> parents: 727 diff changeset	273 if err := binary.Write(
b0bd242ff821 Removed vertex duplicate. Sascha L. Teichmann <teichmann@intevation.de> parents: 727 diff changeset	274 w, binary.LittleEndian, math.Float64bits(v.X)); err != nil {
b0bd242ff821 Removed vertex duplicate. Sascha L. Teichmann <teichmann@intevation.de> parents: 727 diff changeset	275 return err
b0bd242ff821 Removed vertex duplicate. Sascha L. Teichmann <teichmann@intevation.de> parents: 727 diff changeset	276 }
b0bd242ff821 Removed vertex duplicate. Sascha L. Teichmann <teichmann@intevation.de> parents: 727 diff changeset	277 if err := binary.Write(
b0bd242ff821 Removed vertex duplicate. Sascha L. Teichmann <teichmann@intevation.de> parents: 727 diff changeset	278 w, binary.LittleEndian, math.Float64bits(v.Y)); err != nil {
b0bd242ff821 Removed vertex duplicate. Sascha L. Teichmann <teichmann@intevation.de> parents: 727 diff changeset	279 return err
b0bd242ff821 Removed vertex duplicate. Sascha L. Teichmann <teichmann@intevation.de> parents: 727 diff changeset	280 }
b0bd242ff821 Removed vertex duplicate. Sascha L. Teichmann <teichmann@intevation.de> parents: 727 diff changeset	281 return binary.Write(
b0bd242ff821 Removed vertex duplicate. Sascha L. Teichmann <teichmann@intevation.de> parents: 727 diff changeset	282 w, binary.LittleEndian, math.Float64bits(v.Z))
b0bd242ff821 Removed vertex duplicate. Sascha L. Teichmann <teichmann@intevation.de> parents: 727 diff changeset	283 }
b0bd242ff821 Removed vertex duplicate. Sascha L. Teichmann <teichmann@intevation.de> parents: 727 diff changeset	284
b0bd242ff821 Removed vertex duplicate. Sascha L. Teichmann <teichmann@intevation.de> parents: 727 diff changeset	285 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	286 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	287 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	288 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	289 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	290 }
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	291 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	292 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	293 return nil
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	294 }
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	295 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	296 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	297 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	298 }
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	299 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	300 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	301 }
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	302
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	303 func (mls MultiLineStringZ) AsWKB() []byte {
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	304
924 c8146132059e Precalculate WKB size for MultiLineStringZ to avoid reallocations. Sascha L. Teichmann <teichmann@intevation.de> parents: 824 diff changeset	305 // 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	306 size := 1 + 4 + 4
c8146132059e Precalculate WKB size for MultiLineStringZ to avoid reallocations. Sascha L. Teichmann <teichmann@intevation.de> parents: 824 diff changeset	307 for _, ml := range mls {
c8146132059e Precalculate WKB size for MultiLineStringZ to avoid reallocations. Sascha L. Teichmann <teichmann@intevation.de> parents: 824 diff changeset	308 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	309 }
727 41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	310
924 c8146132059e Precalculate WKB size for MultiLineStringZ to avoid reallocations. Sascha L. Teichmann <teichmann@intevation.de> parents: 824 diff changeset	311 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	312
c8146132059e Precalculate WKB size for MultiLineStringZ to avoid reallocations. Sascha L. Teichmann <teichmann@intevation.de> parents: 824 diff changeset	313 binary.Write(buf, binary.LittleEndian, wkbNDR)
c8146132059e Precalculate WKB size for MultiLineStringZ to avoid reallocations. Sascha L. Teichmann <teichmann@intevation.de> parents: 824 diff changeset	314 binary.Write(buf, binary.LittleEndian, wkbMultiLineStringZ)
c8146132059e Precalculate WKB size for MultiLineStringZ to avoid reallocations. Sascha L. Teichmann <teichmann@intevation.de> parents: 824 diff changeset	315 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	316
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	317 for _, ml := range mls {
924 c8146132059e Precalculate WKB size for MultiLineStringZ to avoid reallocations. Sascha L. Teichmann <teichmann@intevation.de> parents: 824 diff changeset	318 binary.Write(buf, binary.LittleEndian, wkbNDR)
c8146132059e Precalculate WKB size for MultiLineStringZ to avoid reallocations. Sascha L. Teichmann <teichmann@intevation.de> parents: 824 diff changeset	319 binary.Write(buf, binary.LittleEndian, wkbLineStringZ)
c8146132059e Precalculate WKB size for MultiLineStringZ to avoid reallocations. Sascha L. Teichmann <teichmann@intevation.de> parents: 824 diff changeset	320 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	321 for _, p := range ml {
924 c8146132059e Precalculate WKB size for MultiLineStringZ to avoid reallocations. Sascha L. Teichmann <teichmann@intevation.de> parents: 824 diff changeset	322 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	323 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	324 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	325 }
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	326 }
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	327
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	328 return buf.Bytes()
41c8dc61f38f Moved octree loading stuff to octree package. Sascha L. Teichmann <teichmann@intevation.de> parents: 726 diff changeset	329 }
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	330
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	331 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	332
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	333 // 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	334 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	335 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	336 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	337 }
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	338
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	339 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	340
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	341 binary.Write(buf, binary.LittleEndian, wkbNDR)
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	342 binary.Write(buf, binary.LittleEndian, wkbMultiLineString)
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	343 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	344
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	345 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	346 binary.Write(buf, binary.LittleEndian, wkbNDR)
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	347 binary.Write(buf, binary.LittleEndian, wkbLineString)
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	348 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	349 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	350 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	351 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	352 }
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	353 }
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	354
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	355 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	356 }
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	357
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	358 // Join joins two lines leaving the first of the secoung 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	359 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	360 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	361 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	362 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	363 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	364 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	365
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	366 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	367
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	368 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	369
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	370 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	371
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	372 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	373 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	374 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	375 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	376 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	377
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	378 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	379 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	380 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	381 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	382
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	383 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	384
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	385 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	386 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	387 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	388 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	389 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	390 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	391
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	392 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	393
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	394 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	395 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	396 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	397 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	398 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	399 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	400 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	401 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	402 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	403 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	404 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	405
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	406 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	407 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	408 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	409 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	410 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	411 } 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	412 (*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	413 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	414 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	415 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	416
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	417 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	418 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	419 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	420 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	421 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	422
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	423 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	424 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	425 } 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	426 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	427 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	428 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	429
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	430 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	431 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	432 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	433 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	434 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	435 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	436 last := (*hs)[l-1]
940 be7b83638ec8 Simplified line merging in generating contour lines. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 928 diff changeset	437 (*hs)[l-1] = nil
be7b83638ec8 Simplified line merging in generating contour lines. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 928 diff changeset	438 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	439 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	440
940 be7b83638ec8 Simplified line merging in generating contour lines. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 928 diff changeset	441 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	442 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	443 // 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	444 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	445 (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	446 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	447 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	448 }
940 be7b83638ec8 Simplified line merging in generating contour lines. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 928 diff changeset	449 // overwrite in current lines
be7b83638ec8 Simplified line merging in generating contour lines. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 928 diff changeset	450 (*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	451 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	452 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	453 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	454
988 7dfd3db94e6d In preparation of persisting import jobs logging is done through an interface. Sascha L. Teichmann <teichmann@intevation.de> parents: 968 diff changeset	455 // 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	456
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	457 // 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	458 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	459 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	460 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	461 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	462 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	463
988 7dfd3db94e6d In preparation of persisting import jobs logging is done through an interface. Sascha L. Teichmann <teichmann@intevation.de> parents: 968 diff changeset	464 // 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	465 // 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	466
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	467 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	468 }
0a0013fbda4a octree2contour: Merge multi linestrings in user land before sending them to database. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 925 diff changeset	469
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	470 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	471 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	472 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	473 }
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	474
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	475 func (a Box2D) Mid() (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	476 return (a.X2-a.X1)0.5 + a.X1, (a.Y2-a.Y1)0.5 + 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	477 }
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	478
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	479 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	480 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	481 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	482 }
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	483 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	484 }
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	485
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	486 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	487 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	488 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	489 }
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	490 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	491 }
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	492
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	493 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	494 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	495 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	496
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	497 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	498 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	499 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	500
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	501 // 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	502 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	503 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	504 }
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	505
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	506 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	507 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	508 }
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	509
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	510 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	511
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	512 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	513 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	514 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	515 }
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	516 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	517 }
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	518
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	519 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	520 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	521 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	522 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	523 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	524 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	525 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	526 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	527 //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	528 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	529 }
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	530 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	531 //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	532 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	533 }
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	534 }
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	535 }
c55771b7c502 Moved Box2D and Plane2D into vertex.go and made to API public. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 769 diff changeset	536 //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	537 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	538 }
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	539
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	540 func (a Vertex) Cross(b Vertex) Vertex {
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	541 return Vertex{
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	542 a.Yb.Z - a.Zb.Y,
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	543 a.Zb.X - a.Xb.Z,
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	544 a.Xb.Y - a.Yb.X,
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	545 }
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	546 }
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	547
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	548 func (p1 Plane2D) Intersection(p2 Plane2D) (float64, float64, bool) {
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	549
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	550 u1 := Vertex{p1.A, p1.B, p1.C}
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	551 u2 := Vertex{p2.A, p2.B, p2.C}
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	552
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	553 p := u1.Cross(u2)
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	554
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	555 if p.Z == 0 {
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	556 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	557 }
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	558
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	559 return p.X / p.Z, p.Y / p.Z, true
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	560 }
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	561
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	562 type VerticalLine struct {
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	563 x1 float64
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	564 y1 float64
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	565 x2 float64
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	566 y2 float64
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	567
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	568 line Plane2D
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	569 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	570
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	571 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	572 return &VerticalLine{
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	573 x1: x1,
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	574 y1: y1,
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	575 x2: x2,
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	576 y2: y2,
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	577 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	578 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	579 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	580
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	581 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	582
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	583 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	584 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	585 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	586 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	587 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	588 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	589
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	590 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	591 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	592 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	593 }
9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	594 }
9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	595
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	596 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	597 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	598 return Vertex{
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	599 (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	600 (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	601 (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	602 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	603 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	604 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	605
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	606 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	607
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	608 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	609
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	610 var out LineStringZ
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	611
815 01019d4c8359 Cross section: Made triangle intersection less spammy. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 813 diff changeset	612 //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	613
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	614 edges:
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	615 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	616 j := (i + 1) % 3
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	617 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	618
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	619 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	620 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	621
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	622 o1 := onPlane(s1)
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	623 o2 := onPlane(s2)
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	624
815 01019d4c8359 Cross section: Made triangle intersection less spammy. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 813 diff changeset	625 // 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	626
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	627 switch {
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	628 case o1 && o2:
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	629 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	630 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	631 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	632
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	633 r1 := inRange(t1)
9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	634 r2 := inRange(t2)
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	635
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	636 switch {
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	637 case r1 && r2:
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	638 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	639 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	640 return out
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	641
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	642 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	643 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	644 return out
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	645 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	646 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	647 // 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	648 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	649 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	650 } else {
d43e61044ad8 Fill in last remaining corner cases in vertical triangle interpolation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 788 diff changeset	651 // 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	652 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	653 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	654 }
d43e61044ad8 Fill in last remaining corner cases in vertical triangle interpolation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 788 diff changeset	655 return out
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	656 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	657 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	658 // 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	659 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	660 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	661 } else {
d43e61044ad8 Fill in last remaining corner cases in vertical triangle interpolation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 788 diff changeset	662 // 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	663 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	664 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	665 }
d43e61044ad8 Fill in last remaining corner cases in vertical triangle interpolation. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 788 diff changeset	666 return out
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	667 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	668
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	669 case o1:
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	670 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	671 if !inRange(t1) {
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	672 continue edges
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	673 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	674 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	675
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	676 case o2:
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	677 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	678 if !inRange(t2) {
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	679 continue edges
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	680 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	681 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	682
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	683 default:
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	684 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	685 if !intersects {
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	686 continue edges
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	687 }
795 bd5f38eb6153 Vertical Triangle intersection: Fixed function to determine where intersection point Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 792 diff changeset	688
815 01019d4c8359 Cross section: Made triangle intersection less spammy. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 813 diff changeset	689 // log.Println("Intersection -----------------------------")
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	690 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	691 // 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	692 if !inRange(t1) {
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	693 continue edges
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	694 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	695
815 01019d4c8359 Cross section: Made triangle intersection less spammy. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 813 diff changeset	696 // 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	697
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	698 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	699 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	700
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	701 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	702 // 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	703 // 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	704 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	705 } 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	706 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	707 out = append(out, n)
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	708 return out
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	709 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	710
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	711 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	712 if k == i {
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	713 continue
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	714 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	715 l := (k + 1) % 3
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	716 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	717 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	718 if !intersects {
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	719 continue
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	720 }
813 1a808929c2c5 Cross sections: Fixed problem that certain inputs don't deliver data. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 796 diff changeset	721 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	722 if !inRange(t2) {
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	723 continue
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	724 }
813 1a808929c2c5 Cross sections: Fixed problem that certain inputs don't deliver data. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 796 diff changeset	725 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	726
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	727 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	728
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	729 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	730
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	731 // 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	732 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	733 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	734 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	735 } else {
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	736 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	737 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	738 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	739
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	740 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	741 // 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	742 // 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	743 break edges
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	744 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	745
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	746 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	747
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	748 tzn := pos(xn, yn)
9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	749 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	750
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	751 if !inRange(tzn) {
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	752 // 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	753 return out
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	754 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	755
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	756 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	757
9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	758 if inRange(tzf) {
787 3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	759 m.X = xf
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	760 m.Y = yf
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	761 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	762 } // else m is clipping
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	763
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	764 n.X = xn
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	765 n.Y = yn
788 9f3a4a60dc04 Cleaned up interpolation mess in vertical triangle intersection. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 787 diff changeset	766 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	767
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	768 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	769 return out
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	770 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	771 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	772 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	773 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	774
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	775 // supress single point touches.
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	776 if len(out) == 1 {
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	777 out = out[:0]
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	778 }
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	779
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	780 return out
3d927e06b92c Triangle intersection. WIP. Currently interpolation is messed up. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 778 diff changeset	781 }
959 6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	782
6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	783 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	784 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	785
6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	786 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	787
6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	788 binary.Write(buf, binary.LittleEndian, wkbNDR)
6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	789 binary.Write(buf, binary.LittleEndian, wkbMultiPointZ)
6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	790 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	791
6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	792 for _, p := range mpz {
6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	793 binary.Write(buf, binary.LittleEndian, wkbNDR)
6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	794 binary.Write(buf, binary.LittleEndian, wkbPointZ)
6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	795 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	796 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	797 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	798 }
6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	799
6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	800 return buf.Bytes()
6ab012d0f0c2 Started with writing an importer job for sounding results. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 940 diff changeset	801 }

Mercurial > gemma

annotate pkg/octree/vertex.go @ 1017:a244b18cb916