Mercurial > gemma
annotate pkg/mesh/raster.go @ 5688:6281c18b109f sr-v2
Finsh serializing v2 meshes.
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
---|---|
date | Mon, 12 Feb 2024 02:27:41 +0100 |
parents | 1222b777f51f |
children | d2ccf6bb6940 |
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 |
5601
1222b777f51f
Made golint finally happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5490
diff
changeset
|
29 // Raster represents a 2D cell raster with a given extend. |
1222b777f51f
Made golint finally happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5490
diff
changeset
|
30 // The cells are equally sized in X and Y direction. |
4768
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
31 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
|
32 BBox Box2D |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
33 CellSize float64 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
34 XCells int |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
35 YCells int |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
36 Cells []float64 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
37 } |
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 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
|
40 |
5601
1222b777f51f
Made golint finally happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5490
diff
changeset
|
41 // NewRaster creates a new Raster with the given extend |
1222b777f51f
Made golint finally happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5490
diff
changeset
|
42 // and cell size. |
4768
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
43 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
|
44 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
45 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
|
46 |
5490
5f47eeea988d
Use own logging package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5469
diff
changeset
|
47 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
|
48 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
49 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
|
50 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
|
51 |
5490
5f47eeea988d
Use own logging package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5469
diff
changeset
|
52 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
|
53 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
54 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
|
55 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
|
56 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
|
57 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
|
58 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
59 return &Raster{ |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
60 BBox: bbox, |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
61 CellSize: cellSize, |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
62 XCells: xCells, |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
63 YCells: yCells, |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
64 Cells: cells, |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
65 } |
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 |
5601
1222b777f51f
Made golint finally happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5490
diff
changeset
|
68 // Rasterize fills the raster with the evaluation data |
1222b777f51f
Made golint finally happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5490
diff
changeset
|
69 // received via the given eval function. The cell values |
1222b777f51f
Made golint finally happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5490
diff
changeset
|
70 // 4x oversampled, |
4768
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
71 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
|
72 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
|
73 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
74 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
|
75 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
76 rasterRow := func() { |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
77 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
|
78 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
|
79 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
|
80 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
|
81 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
|
82 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
|
83 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
|
84 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
|
85 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
|
86 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
|
87 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
|
88 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
|
89 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
90 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
|
91 sum = v |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
92 n = 1 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
93 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
94 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
|
95 sum += v |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
96 n++ |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
97 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
98 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
|
99 sum += v |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
100 n++ |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
101 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
102 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
|
103 sum += v |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
104 n++ |
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 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
|
108 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
|
109 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
110 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
|
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 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
114 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
115 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
|
116 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
|
117 go rasterRow() |
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 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
|
121 rows <- i |
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 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
|
124 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
|
125 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
126 |
5601
1222b777f51f
Made golint finally happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5490
diff
changeset
|
127 // Diff updates the cell values of the raster with difference |
1222b777f51f
Made golint finally happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5490
diff
changeset
|
128 // of this raster and the values from the gien eval function. |
1222b777f51f
Made golint finally happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5490
diff
changeset
|
129 // The data will 4x over-sampled. |
4768
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
130 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
|
131 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
|
132 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
133 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
|
134 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
135 rasterRow := func() { |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
136 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
|
137 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
|
138 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
|
139 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
|
140 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
|
141 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
|
142 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
|
143 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
|
144 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
|
145 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
|
146 // 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
|
147 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
|
148 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
|
149 continue |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
150 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
151 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
|
152 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
|
153 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
154 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
|
155 sum = v |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
156 n = 1 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
157 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
158 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
|
159 sum += v |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
160 n++ |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
161 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
162 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
|
163 sum += v |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
164 n++ |
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 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
|
167 sum += v |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
168 n++ |
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 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
|
172 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
|
173 } else { |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
174 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
|
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 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
|
178 } |
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 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
181 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
182 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
|
183 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
|
184 go rasterRow() |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
185 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
186 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
187 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
|
188 rows <- i |
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 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
|
191 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
|
192 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
193 |
5601
1222b777f51f
Made golint finally happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5490
diff
changeset
|
194 // ZExtent returns the z-range of the raster. |
1222b777f51f
Made golint finally happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5490
diff
changeset
|
195 // The last return value is false if the raster |
1222b777f51f
Made golint finally happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5490
diff
changeset
|
196 // only consists of no data values. |
4768
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
197 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
|
198 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
|
199 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
|
200 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
|
201 continue |
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 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
|
204 min = v |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
205 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
206 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
|
207 max = v |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
208 } |
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 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
|
211 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
212 |
5601
1222b777f51f
Made golint finally happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5490
diff
changeset
|
213 // Trace generates contour lines of this raster given |
1222b777f51f
Made golint finally happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5490
diff
changeset
|
214 // the given class breaks. |
5412
34bc6041e61e
Added a type for class breaks.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
4827
diff
changeset
|
215 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
|
216 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
|
217 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
218 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
|
219 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
220 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
|
221 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
222 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
|
223 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
|
224 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
225 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
|
226 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
227 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
|
228 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
229 doContours := func() { |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
230 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
|
231 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
|
232 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
|
233 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
|
234 } |
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 } |
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 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
|
239 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
|
240 go doContours() |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
241 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
242 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
243 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
|
244 cnts <- i |
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 close(cnts) |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
247 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
248 wg.Wait() |
5490
5f47eeea988d
Use own logging package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5469
diff
changeset
|
249 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
|
250 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
251 return areas |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
252 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
253 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
254 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
|
255 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
256 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
|
257 box Box2D |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
258 cnt contour |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
259 children []*bboxNode |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
260 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
261 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
262 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
|
263 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
|
264 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
|
265 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
266 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
267 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
|
268 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
|
269 } |
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 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
|
272 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
|
273 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
274 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
275 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
|
276 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
|
277 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
|
278 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
279 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
|
280 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
|
281 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
|
282 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
283 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
|
284 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
|
285 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
286 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
|
287 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
|
288 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
289 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
|
290 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
|
291 } |
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 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
|
294 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
295 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
296 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
|
297 // 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
|
298 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
|
299 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
300 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
|
301 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
|
302 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
|
303 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
|
304 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
305 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
|
306 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
|
307 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
308 } |
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 // 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
|
311 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
|
312 // 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
|
313 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
|
314 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
|
315 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
|
316 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
|
317 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
318 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
|
319 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
|
320 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
321 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
322 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
|
323 return |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
324 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
325 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
326 // 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
|
327 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
|
328 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
|
329 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
|
330 return |
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 } |
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 // 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
|
335 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
|
336 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
|
337 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
338 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
339 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
|
340 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
|
341 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
342 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
343 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
|
344 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
345 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
|
346 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
347 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
|
348 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
349 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
|
350 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
351 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
|
352 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
|
353 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
|
354 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
355 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
|
356 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
357 // 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
|
358 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
|
359 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
|
360 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
361 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
362 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
363 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
|
364 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
|
365 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
|
366 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
367 } |
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 func buildMultipolygon( |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
370 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
|
371 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
|
372 ) wkb.MultiPolygonGeom { |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
373 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
374 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
|
375 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
376 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
|
377 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
|
378 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
379 |
5490
5f47eeea988d
Use own logging package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5469
diff
changeset
|
380 //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
|
381 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
382 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
|
383 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
384 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
|
385 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
386 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
|
387 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
388 // Handle shell |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
389 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
|
390 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
|
391 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
|
392 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
|
393 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
|
394 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
395 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
396 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
|
397 shell.Reverse() |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
398 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
399 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
|
400 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
401 // handle holes |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
402 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
|
403 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
|
404 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
|
405 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
|
406 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
|
407 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
|
408 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
409 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
410 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
|
411 hole.Reverse() |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
412 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
413 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
|
414 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
415 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
416 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
|
417 } |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
418 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
419 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
|
420 |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
421 return mp |
a2f16bbcc846
Morph differences: Directly raster A and subtract B as a raster.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
422 } |