gemma: pkg/mesh/raster.go annotate

annotate pkg/mesh/raster.go @ 5561:b91716d2acc6

Fixed log message analyzing in log export.

author	Sascha L. Teichmann <sascha.teichmann@intevation.de>
date	Fri, 11 Feb 2022 18:57:11 +0100
parents	5f47eeea988d
children	1222b777f51f

rev	line source
4768 a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	1 // This is Free Software under GNU Affero General Public License v >= 3.0
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	2 // without warranty, see README.md and license for details.
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	3 //
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	4 // SPDX-License-Identifier: AGPL-3.0-or-later
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	5 // License-Filename: LICENSES/AGPL-3.0.txt
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	6 //
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	7 // Copyright (C) 2019 by via donau
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	8 // – Österreichische Wasserstraßen-Gesellschaft mbH
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	9 // Software engineering by Intevation GmbH
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	10 //
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	11 // Author(s):
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	12 // * Sascha L. Teichmann <sascha.teichmann@intevation.de>
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	13
4827 f4abfd0ee8ad Renamed octree package to mesh as there is no octree any more. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 4768 diff changeset	14 package mesh
4768 a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	15
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	16 import (
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	17 "math"
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	18 "runtime"
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	19 "sync"
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	20 "time"
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	21
4827 f4abfd0ee8ad Renamed octree package to mesh as there is no octree any more. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 4768 diff changeset	22 "github.com/fogleman/contourmap"
f4abfd0ee8ad Renamed octree package to mesh as there is no octree any more. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 4768 diff changeset	23
4768 a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	24 "gemma.intevation.de/gemma/pkg/common"
5490 5f47eeea988d Use own logging package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 5469 diff changeset	25 "gemma.intevation.de/gemma/pkg/log"
4768 a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	26 "gemma.intevation.de/gemma/pkg/wkb"
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	27 )
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	28
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	29 type Raster struct {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	30 BBox Box2D
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	31 CellSize float64
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	32 XCells int
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	33 YCells int
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	34 Cells []float64
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	35 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	36
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	37 const noData = -math.MaxFloat64
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	38
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	39 func NewRaster(bbox Box2D, cellSize float64) *Raster {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	40
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	41 width, height := bbox.Size()
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	42
5490 5f47eeea988d Use own logging package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 5469 diff changeset	43 log.Infof("raster extent: %.2f / %.2f", width, height)
4768 a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	44
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	45 xCells := int(math.Ceil(width / cellSize))
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	46 yCells := int(math.Ceil(height / cellSize))
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	47
5490 5f47eeea988d Use own logging package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 5469 diff changeset	48 log.Infof("raster size: %d / %d\n", xCells, yCells)
4768 a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	49
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	50 size := (xCells + 2) * (yCells + 2)
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	51 cells := make([]float64, size)
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	52 for i := range cells {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	53 cells[i] = noData
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	54 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	55 return &Raster{
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	56 BBox: bbox,
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	57 CellSize: cellSize,
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	58 XCells: xCells,
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	59 YCells: yCells,
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	60 Cells: cells,
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	61 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	62 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	63
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	64 func (r *Raster) Rasterize(eval func(float64, float64) (float64, bool)) {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	65 var wg sync.WaitGroup
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	66
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	67 rows := make(chan int)
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	68
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	69 rasterRow := func() {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	70 defer wg.Done()
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	71 quat := 0.25 * r.CellSize
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	72 for i := range rows {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	73 pos := (i+1)*(r.XCells+2) + 1
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	74 row := r.Cells[pos : pos+r.XCells]
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	75 py := r.BBox.Y1 + float64(i)*r.CellSize + r.CellSize/2
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	76 px := r.BBox.X1 + r.CellSize/2
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	77 y1 := py - quat
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	78 y2 := py + quat
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	79 for j := range row {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	80 var n int
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	81 var sum float64
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	82
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	83 if v, ok := eval(px-quat, y1); ok {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	84 sum = v
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	85 n = 1
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	86 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	87 if v, ok := eval(px-quat, y2); ok {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	88 sum += v
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	89 n++
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	90 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	91 if v, ok := eval(px+quat, y1); ok {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	92 sum += v
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	93 n++
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	94 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	95 if v, ok := eval(px+quat, y2); ok {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	96 sum += v
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	97 n++
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	98 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	99
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	100 if n > 0 {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	101 row[j] = sum / float64(n)
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	102 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	103 px += r.CellSize
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	104 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	105 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	106 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	107
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	108 for n := runtime.NumCPU(); n >= 1; n-- {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	109 wg.Add(1)
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	110 go rasterRow()
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	111 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	112
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	113 for i := 0; i < r.YCells; i++ {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	114 rows <- i
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	115 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	116 close(rows)
5469 1a89084163d5 Fixed data race in diff calculation by adding two forgotten waitgroup waits. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 5412 diff changeset	117 wg.Wait()
4768 a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	118 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	119
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	120 func (r *Raster) Diff(eval func(float64, float64) (float64, bool)) {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	121 var wg sync.WaitGroup
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	122
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	123 rows := make(chan int)
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	124
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	125 rasterRow := func() {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	126 defer wg.Done()
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	127 quat := 0.25 * r.CellSize
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	128 for i := range rows {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	129 pos := (i+1)*(r.XCells+2) + 1
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	130 row := r.Cells[pos : pos+r.XCells]
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	131 py := r.BBox.Y1 + float64(i)*r.CellSize + r.CellSize/2
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	132 px := r.BBox.X1 + r.CellSize/2
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	133 y1 := py - quat
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	134 y2 := py + quat
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	135 for j, old := range row {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	136 // only diff where values
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	137 if old == noData {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	138 px += r.CellSize
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	139 continue
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	140 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	141 var n int
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	142 var sum float64
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	143
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	144 if v, ok := eval(px-quat, y1); ok {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	145 sum = v
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	146 n = 1
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	147 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	148 if v, ok := eval(px-quat, y2); ok {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	149 sum += v
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	150 n++
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	151 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	152 if v, ok := eval(px+quat, y1); ok {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	153 sum += v
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	154 n++
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	155 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	156 if v, ok := eval(px+quat, y2); ok {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	157 sum += v
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	158 n++
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	159 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	160
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	161 if n > 0 {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	162 row[j] -= sum / float64(n)
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	163 } else {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	164 row[j] = noData
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	165 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	166
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	167 px += r.CellSize
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	168 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	169 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	170 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	171
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	172 for n := runtime.NumCPU(); n >= 1; n-- {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	173 wg.Add(1)
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	174 go rasterRow()
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	175 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	176
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	177 for i := 0; i < r.YCells; i++ {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	178 rows <- i
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	179 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	180 close(rows)
5469 1a89084163d5 Fixed data race in diff calculation by adding two forgotten waitgroup waits. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 5412 diff changeset	181 wg.Wait()
4768 a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	182 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	183
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	184 func (r *Raster) ZExtent() (float64, float64, bool) {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	185 min, max := math.MaxFloat64, -math.MaxFloat64
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	186 for _, v := range r.Cells {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	187 if v == noData {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	188 continue
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	189 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	190 if v < min {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	191 min = v
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	192 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	193 if v > max {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	194 max = v
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	195 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	196 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	197 return min, max, min != math.MaxFloat64
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	198 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	199
5412 34bc6041e61e Added a type for class breaks. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 4827 diff changeset	200 func (r *Raster) Trace(heights ClassBreaks) []wkb.MultiPolygonGeom {
4768 a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	201 start := time.Now()
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	202
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	203 tracer := contourmap.FromFloat64s(r.XCells+2, r.YCells+2, r.Cells)
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	204
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	205 areas := make([]wkb.MultiPolygonGeom, len(heights))
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	206
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	207 reprojX := common.Linear(0.5, r.BBox.X1, 1.5, r.BBox.X1+r.CellSize)
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	208 reprojY := common.Linear(0.5, r.BBox.Y1, 1.5, r.BBox.Y1+r.CellSize)
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	209
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	210 var wg sync.WaitGroup
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	211
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	212 cnts := make(chan int)
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	213
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	214 doContours := func() {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	215 defer wg.Done()
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	216 for hIdx := range cnts {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	217 if c := tracer.Contours(heights[hIdx]); len(c) > 0 {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	218 areas[hIdx] = buildMultipolygon(c, reprojX, reprojY)
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	219 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	220 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	221 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	222
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	223 for n := runtime.NumCPU(); n >= 1; n-- {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	224 wg.Add(1)
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	225 go doContours()
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	226 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	227
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	228 for i := range heights {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	229 cnts <- i
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	230 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	231 close(cnts)
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	232
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	233 wg.Wait()
5490 5f47eeea988d Use own logging package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 5469 diff changeset	234 log.Infof("Tracing areas took %v\n", time.Since(start))
4768 a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	235
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	236 return areas
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	237 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	238
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	239 type contour []contourmap.Point
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	240
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	241 type bboxNode struct {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	242 box Box2D
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	243 cnt contour
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	244 children []*bboxNode
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	245 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	246
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	247 func (cnt contour) contains(o contour) bool {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	248 return contains(cnt, o[0].X, o[0].Y) \|\|
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	249 contains(cnt, o[len(o)/2].X, o[len(o)/2].Y)
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	250 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	251
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	252 func (cnt contour) length() int {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	253 return len(cnt)
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	254 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	255
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	256 func (cnt contour) point(i int) (float64, float64) {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	257 return cnt[i].X, cnt[i].Y
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	258 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	259
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	260 func (cnt contour) bbox() Box2D {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	261 minX, minY := math.MaxFloat64, math.MaxFloat64
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	262 maxX, maxY := -math.MaxFloat64, -math.MaxFloat64
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	263
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	264 for _, p := range cnt {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	265 if p.X < minX {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	266 minX = p.X
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	267 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	268 if p.X > maxX {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	269 maxX = p.X
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	270 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	271 if p.Y < minY {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	272 minY = p.Y
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	273 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	274 if p.Y > maxY {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	275 maxY = p.Y
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	276 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	277 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	278 return Box2D{X1: minX, X2: maxX, Y1: minY, Y2: maxY}
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	279 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	280
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	281 func (bn *bboxNode) insert(cnt contour, box Box2D) {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	282 // check if children are inside new
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	283 var nr *bboxNode
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	284
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	285 for i, r := range bn.children {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	286 if r.box.Inside(box) && cnt.contains(r.cnt) {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	287 if nr == nil {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	288 nr = &bboxNode{box: box, cnt: cnt}
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	289 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	290 nr.children = append(nr.children, r)
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	291 bn.children[i] = nil
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	292 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	293 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	294
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	295 // we have a new child
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	296 if nr != nil {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	297 // compact the list
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	298 for i := len(bn.children) - 1; i >= 0; i-- {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	299 if bn.children[i] == nil {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	300 if i < len(bn.children)-1 {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	301 copy(bn.children[i:], bn.children[i+1:])
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	302 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	303 bn.children[len(bn.children)-1] = nil
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	304 bn.children = bn.children[:len(bn.children)-1]
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	305 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	306 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	307 bn.children = append(bn.children, nr)
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	308 return
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	309 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	310
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	311 // check if new is inside an old
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	312 for _, r := range bn.children {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	313 if box.Inside(r.box) && r.cnt.contains(cnt) {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	314 r.insert(cnt, box)
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	315 return
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	316 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	317 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	318
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	319 // its a new child node.
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	320 nr = &bboxNode{box: box, cnt: cnt}
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	321 bn.children = append(bn.children, nr)
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	322 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	323
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	324 func (bn *bboxNode) insertRoot(cnt contour) {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	325 bn.insert(cnt, cnt.bbox())
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	326 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	327
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	328 type bboxOutFunc func(contour, []contour)
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	329
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	330 func (bn *bboxNode) generate(out bboxOutFunc) {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	331
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	332 var grands []*bboxNode
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	333
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	334 holes := make([]contour, len(bn.children))
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	335
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	336 for i, ch := range bn.children {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	337 holes[i] = ch.cnt
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	338 grands = append(grands, ch.children...)
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	339 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	340 out(bn.cnt, holes)
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	341
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	342 // the grand children are new polygons.
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	343 for _, grand := range grands {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	344 grand.generate(out)
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	345 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	346 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	347
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	348 func (bn *bboxNode) generateRoot(out bboxOutFunc) {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	349 for _, r := range bn.children {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	350 r.generate(out)
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	351 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	352 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	353
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	354 func buildMultipolygon(
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	355 cnts []contourmap.Contour,
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	356 reprojX, reprojY func(float64) float64,
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	357 ) wkb.MultiPolygonGeom {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	358
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	359 var forest bboxNode
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	360
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	361 for _, cnt := range cnts {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	362 forest.insertRoot(contour(cnt))
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	363 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	364
5490 5f47eeea988d Use own logging package. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: 5469 diff changeset	365 //log.Debugf("cnts: %d roots: %d\n", len(cnts), len(bf.roots))
4768 a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	366
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	367 var mp wkb.MultiPolygonGeom
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	368
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	369 out := func(sh contour, hls []contour) {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	370
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	371 polygon := make(wkb.PolygonGeom, 1+len(hls))
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	372
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	373 // Handle shell
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	374 shell := make(wkb.LinearRingGeom, len(sh))
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	375 for j, pt := range sh {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	376 shell[j] = wkb.PointGeom{
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	377 X: reprojX(pt.X),
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	378 Y: reprojY(pt.Y),
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	379 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	380 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	381 if shell.CCW() {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	382 shell.Reverse()
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	383 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	384 polygon[0] = shell
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	385
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	386 // handle holes
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	387 for i, hl := range hls {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	388 hole := make(wkb.LinearRingGeom, len(hl))
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	389 for j, pt := range hl {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	390 hole[j] = wkb.PointGeom{
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	391 X: reprojX(pt.X),
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	392 Y: reprojY(pt.Y),
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	393 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	394 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	395 if !hole.CCW() {
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	396 hole.Reverse()
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	397 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	398 polygon[1+i] = hole
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	399 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	400
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	401 mp = append(mp, polygon)
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	402 }
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	403
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	404 forest.generateRoot(out)
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	405
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	406 return mp
a2f16bbcc846 Morph differences: Directly raster A and subtract B as a raster. Sascha L. Teichmann <sascha.teichmann@intevation.de> parents: diff changeset	407 }

Mercurial > gemma

annotate pkg/mesh/raster.go @ 5561:b91716d2acc6