Mercurial > gemma
annotate pkg/octree/tree.go @ 1879:9a2fbeaabd52 dev-pdf-generation
merging in from branch default
author | Bernhard Reiter <bernhard@intevation.de> |
---|---|
date | Tue, 15 Jan 2019 10:07:10 +0100 |
parents | fe1aa62195c2 |
children | a1e751c08c56 |
rev | line source |
---|---|
1017
a244b18cb916
Added GNU Affero General Public License.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
1 // This is Free Software under GNU Affero General Public License v >= 3.0 |
a244b18cb916
Added GNU Affero General Public License.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
2 // without warranty, see README.md and license for details. |
a244b18cb916
Added GNU Affero General Public License.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
3 // |
a244b18cb916
Added GNU Affero General Public License.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
4 // SPDX-License-Identifier: AGPL-3.0-or-later |
a244b18cb916
Added GNU Affero General Public License.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
5 // License-Filename: LICENSES/AGPL-3.0.txt |
a244b18cb916
Added GNU Affero General Public License.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
6 // |
a244b18cb916
Added GNU Affero General Public License.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
7 // Copyright (C) 2018 by via donau |
a244b18cb916
Added GNU Affero General Public License.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
8 // – Österreichische Wasserstraßen-Gesellschaft mbH |
a244b18cb916
Added GNU Affero General Public License.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
9 // Software engineering by Intevation GmbH |
a244b18cb916
Added GNU Affero General Public License.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
10 // |
a244b18cb916
Added GNU Affero General Public License.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
11 // Author(s): |
a244b18cb916
Added GNU Affero General Public License.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
12 // * Sascha L. Teichmann <sascha.teichmann@intevation.de> |
a244b18cb916
Added GNU Affero General Public License.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
13 |
727
41c8dc61f38f
Moved octree loading stuff to octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
726
diff
changeset
|
14 package octree |
707
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
15 |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
16 import ( |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
17 "math" |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
18 ) |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
19 |
1692
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1017
diff
changeset
|
20 // Tree is an Octree holding triangles. |
727
41c8dc61f38f
Moved octree loading stuff to octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
726
diff
changeset
|
21 type Tree struct { |
1692
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1017
diff
changeset
|
22 // EPSG is the projection. |
726
5af9ab39e715
Renamed a few types to uppercase names to prepare the move to the octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
707
diff
changeset
|
23 EPSG uint32 |
707
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
24 |
726
5af9ab39e715
Renamed a few types to uppercase names to prepare the move to the octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
707
diff
changeset
|
25 vertices []Vertex |
707
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
26 triangles [][]int32 |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
27 index []int32 |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
28 |
1692
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1017
diff
changeset
|
29 // Min is the lower left corner of the bbox. |
726
5af9ab39e715
Renamed a few types to uppercase names to prepare the move to the octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
707
diff
changeset
|
30 Min Vertex |
1692
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1017
diff
changeset
|
31 // Max is the upper right corner of the bbox. |
726
5af9ab39e715
Renamed a few types to uppercase names to prepare the move to the octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
707
diff
changeset
|
32 Max Vertex |
707
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
33 } |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
34 |
759
46fe2ae761e8
Check bounding boxes against plane, too. WIP
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
758
diff
changeset
|
35 var scale = [4][4]float64{ |
46fe2ae761e8
Check bounding boxes against plane, too. WIP
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
758
diff
changeset
|
36 {0.0, 0.0, 0.5, 0.5}, |
46fe2ae761e8
Check bounding boxes against plane, too. WIP
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
758
diff
changeset
|
37 {0.5, 0.0, 1.0, 0.5}, |
46fe2ae761e8
Check bounding boxes against plane, too. WIP
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
758
diff
changeset
|
38 {0.0, 0.5, 0.5, 1.0}, |
46fe2ae761e8
Check bounding boxes against plane, too. WIP
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
758
diff
changeset
|
39 {0.5, 0.5, 1.0, 1.0}, |
46fe2ae761e8
Check bounding boxes against plane, too. WIP
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
758
diff
changeset
|
40 } |
46fe2ae761e8
Check bounding boxes against plane, too. WIP
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
758
diff
changeset
|
41 |
1692
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1017
diff
changeset
|
42 // Vertical does a vertical cross cut from (x1, y1) to (x2, y2). |
755
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
43 func (ot *Tree) Vertical(x1, y1, x2, y2 float64, fn func(*Triangle)) { |
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
44 |
774
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
761
diff
changeset
|
45 box := Box2D{ |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
761
diff
changeset
|
46 X1: math.Min(x1, x2), |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
761
diff
changeset
|
47 Y1: math.Min(y1, y2), |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
761
diff
changeset
|
48 X2: math.Max(x1, x2), |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
761
diff
changeset
|
49 Y2: math.Max(y1, y2), |
755
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
50 } |
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
51 |
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
52 // out of bounding box |
774
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
761
diff
changeset
|
53 if box.X2 < ot.Min.X || ot.Max.X < box.X1 || |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
761
diff
changeset
|
54 box.Y2 < ot.Min.Y || ot.Max.Y < box.Y1 { |
755
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
55 return |
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
56 } |
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
57 |
774
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
761
diff
changeset
|
58 line := NewPlane2D(x1, y1, x2, y2) |
756
5e14000829d1
Complete vertical octree traversal. Seems not very selective.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
755
diff
changeset
|
59 |
755
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
60 type frame struct { |
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
61 pos int32 |
774
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
761
diff
changeset
|
62 Box2D |
755
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
63 } |
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
64 |
756
5e14000829d1
Complete vertical octree traversal. Seems not very selective.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
755
diff
changeset
|
65 dupes := map[int32]struct{}{} |
5e14000829d1
Complete vertical octree traversal. Seems not very selective.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
755
diff
changeset
|
66 |
774
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
761
diff
changeset
|
67 all := Box2D{ot.Min.X, ot.Min.Y, ot.Max.X, ot.Max.Y} |
761
033975d49c90
Removed a bit debug output on vertical traversal of octree.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
760
diff
changeset
|
68 //log.Printf("area: %f\n", (box.x2-box.x1)*(box.y2-box.y1)) |
033975d49c90
Removed a bit debug output on vertical traversal of octree.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
760
diff
changeset
|
69 //log.Printf("all: %f\n", (all.x2-all.x1)*(all.y2-all.y1)) |
758
0f3ba8bfa641
Simplified vertical traversal of octree.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
757
diff
changeset
|
70 |
0f3ba8bfa641
Simplified vertical traversal of octree.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
757
diff
changeset
|
71 stack := []frame{{1, all}} |
755
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
72 |
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
73 for len(stack) > 0 { |
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
74 top := stack[len(stack)-1] |
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
75 stack = stack[:len(stack)-1] |
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
76 |
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
77 if top.pos > 0 { // node |
1790
fe1aa62195c2
Octree: Same emtry tree fix for horizontal as for vertical traversal. Re-worked both to be BCE friendly.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1788
diff
changeset
|
78 if index := ot.index[top.pos:]; len(index) > 7 { |
fe1aa62195c2
Octree: Same emtry tree fix for horizontal as for vertical traversal. Re-worked both to be BCE friendly.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1788
diff
changeset
|
79 for i := 0; i < 4; i++ { |
fe1aa62195c2
Octree: Same emtry tree fix for horizontal as for vertical traversal. Re-worked both to be BCE friendly.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1788
diff
changeset
|
80 a := index[i] |
fe1aa62195c2
Octree: Same emtry tree fix for horizontal as for vertical traversal. Re-worked both to be BCE friendly.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1788
diff
changeset
|
81 b := index[i+4] |
fe1aa62195c2
Octree: Same emtry tree fix for horizontal as for vertical traversal. Re-worked both to be BCE friendly.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1788
diff
changeset
|
82 if a == 0 && b == 0 { |
fe1aa62195c2
Octree: Same emtry tree fix for horizontal as for vertical traversal. Re-worked both to be BCE friendly.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1788
diff
changeset
|
83 continue |
758
0f3ba8bfa641
Simplified vertical traversal of octree.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
757
diff
changeset
|
84 } |
1790
fe1aa62195c2
Octree: Same emtry tree fix for horizontal as for vertical traversal. Re-worked both to be BCE friendly.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1788
diff
changeset
|
85 dx := top.X2 - top.X1 |
fe1aa62195c2
Octree: Same emtry tree fix for horizontal as for vertical traversal. Re-worked both to be BCE friendly.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1788
diff
changeset
|
86 dy := top.Y2 - top.Y1 |
fe1aa62195c2
Octree: Same emtry tree fix for horizontal as for vertical traversal. Re-worked both to be BCE friendly.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1788
diff
changeset
|
87 nbox := Box2D{ |
fe1aa62195c2
Octree: Same emtry tree fix for horizontal as for vertical traversal. Re-worked both to be BCE friendly.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1788
diff
changeset
|
88 dx*scale[i][0] + top.X1, |
fe1aa62195c2
Octree: Same emtry tree fix for horizontal as for vertical traversal. Re-worked both to be BCE friendly.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1788
diff
changeset
|
89 dy*scale[i][1] + top.Y1, |
fe1aa62195c2
Octree: Same emtry tree fix for horizontal as for vertical traversal. Re-worked both to be BCE friendly.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1788
diff
changeset
|
90 dx*scale[i][2] + top.X1, |
fe1aa62195c2
Octree: Same emtry tree fix for horizontal as for vertical traversal. Re-worked both to be BCE friendly.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1788
diff
changeset
|
91 dy*scale[i][3] + top.Y1, |
fe1aa62195c2
Octree: Same emtry tree fix for horizontal as for vertical traversal. Re-worked both to be BCE friendly.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1788
diff
changeset
|
92 } |
fe1aa62195c2
Octree: Same emtry tree fix for horizontal as for vertical traversal. Re-worked both to be BCE friendly.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1788
diff
changeset
|
93 if nbox.Intersects(box) && nbox.IntersectsPlane(line) { |
fe1aa62195c2
Octree: Same emtry tree fix for horizontal as for vertical traversal. Re-worked both to be BCE friendly.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1788
diff
changeset
|
94 if a != 0 { |
fe1aa62195c2
Octree: Same emtry tree fix for horizontal as for vertical traversal. Re-worked both to be BCE friendly.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1788
diff
changeset
|
95 stack = append(stack, frame{a, nbox}) |
fe1aa62195c2
Octree: Same emtry tree fix for horizontal as for vertical traversal. Re-worked both to be BCE friendly.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1788
diff
changeset
|
96 } |
fe1aa62195c2
Octree: Same emtry tree fix for horizontal as for vertical traversal. Re-worked both to be BCE friendly.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1788
diff
changeset
|
97 if b != 0 { |
fe1aa62195c2
Octree: Same emtry tree fix for horizontal as for vertical traversal. Re-worked both to be BCE friendly.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1788
diff
changeset
|
98 stack = append(stack, frame{b, nbox}) |
fe1aa62195c2
Octree: Same emtry tree fix for horizontal as for vertical traversal. Re-worked both to be BCE friendly.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1788
diff
changeset
|
99 } |
755
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
100 } |
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
101 } |
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
102 } |
756
5e14000829d1
Complete vertical octree traversal. Seems not very selective.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
755
diff
changeset
|
103 } else { // leaf |
5e14000829d1
Complete vertical octree traversal. Seems not very selective.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
755
diff
changeset
|
104 pos := -top.pos - 1 |
5e14000829d1
Complete vertical octree traversal. Seems not very selective.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
755
diff
changeset
|
105 n := ot.index[pos] |
5e14000829d1
Complete vertical octree traversal. Seems not very selective.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
755
diff
changeset
|
106 indices := ot.index[pos+1 : pos+1+n] |
755
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
107 |
756
5e14000829d1
Complete vertical octree traversal. Seems not very selective.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
755
diff
changeset
|
108 for _, idx := range indices { |
5e14000829d1
Complete vertical octree traversal. Seems not very selective.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
755
diff
changeset
|
109 if _, found := dupes[idx]; found { |
5e14000829d1
Complete vertical octree traversal. Seems not very selective.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
755
diff
changeset
|
110 continue |
5e14000829d1
Complete vertical octree traversal. Seems not very selective.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
755
diff
changeset
|
111 } |
5e14000829d1
Complete vertical octree traversal. Seems not very selective.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
755
diff
changeset
|
112 tri := ot.triangles[idx] |
5e14000829d1
Complete vertical octree traversal. Seems not very selective.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
755
diff
changeset
|
113 t := Triangle{ |
5e14000829d1
Complete vertical octree traversal. Seems not very selective.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
755
diff
changeset
|
114 ot.vertices[tri[0]], |
5e14000829d1
Complete vertical octree traversal. Seems not very selective.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
755
diff
changeset
|
115 ot.vertices[tri[1]], |
5e14000829d1
Complete vertical octree traversal. Seems not very selective.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
755
diff
changeset
|
116 ot.vertices[tri[2]], |
5e14000829d1
Complete vertical octree traversal. Seems not very selective.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
755
diff
changeset
|
117 } |
5e14000829d1
Complete vertical octree traversal. Seems not very selective.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
755
diff
changeset
|
118 |
774
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
761
diff
changeset
|
119 v0 := line.Eval(t[0].X, t[0].Y) |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
761
diff
changeset
|
120 v1 := line.Eval(t[1].X, t[1].Y) |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
761
diff
changeset
|
121 v2 := line.Eval(t[2].X, t[2].Y) |
756
5e14000829d1
Complete vertical octree traversal. Seems not very selective.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
755
diff
changeset
|
122 |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
123 if onPlane(v0) || onPlane(v1) || onPlane(v2) || |
759
46fe2ae761e8
Check bounding boxes against plane, too. WIP
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
758
diff
changeset
|
124 sides(sides(sides(0, v0), v1), v2) == 3 { |
756
5e14000829d1
Complete vertical octree traversal. Seems not very selective.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
755
diff
changeset
|
125 fn(&t) |
5e14000829d1
Complete vertical octree traversal. Seems not very selective.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
755
diff
changeset
|
126 } |
758
0f3ba8bfa641
Simplified vertical traversal of octree.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
757
diff
changeset
|
127 dupes[idx] = struct{}{} |
756
5e14000829d1
Complete vertical octree traversal. Seems not very selective.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
755
diff
changeset
|
128 } |
755
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
129 } |
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
130 } |
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
131 } |
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
132 |
1692
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1017
diff
changeset
|
133 // Horizontal does a horizontal cross cut. |
727
41c8dc61f38f
Moved octree loading stuff to octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
726
diff
changeset
|
134 func (ot *Tree) Horizontal(h float64, fn func(*Triangle)) { |
707
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
135 |
755
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
136 if h < ot.Min.Z || ot.Max.Z < h { |
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
137 return |
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
138 } |
1a1a8b5f2d02
Vertical traversal of octree for cross sections. WIP.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
728
diff
changeset
|
139 |
707
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
140 type frame struct { |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
141 pos int32 |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
142 min float64 |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
143 max float64 |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
144 } |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
145 |
756
5e14000829d1
Complete vertical octree traversal. Seems not very selective.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
755
diff
changeset
|
146 dupes := map[int32]struct{}{} |
707
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
147 |
756
5e14000829d1
Complete vertical octree traversal. Seems not very selective.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
755
diff
changeset
|
148 stack := []frame{{1, ot.Min.Z, ot.Max.Z}} |
707
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
149 |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
150 for len(stack) > 0 { |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
151 top := stack[len(stack)-1] |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
152 stack = stack[:len(stack)-1] |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
153 |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
154 pos := top.pos |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
155 if pos == 0 { |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
156 continue |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
157 } |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
158 min, max := top.min, top.max |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
159 |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
160 if pos > 0 { // node |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
161 if mid := (max-min)*0.5 + min; h >= mid { |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
162 pos += 4 // nodes with z-bit set |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
163 min = mid |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
164 } else { |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
165 max = mid |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
166 } |
1790
fe1aa62195c2
Octree: Same emtry tree fix for horizontal as for vertical traversal. Re-worked both to be BCE friendly.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1788
diff
changeset
|
167 if index := ot.index[pos:]; len(index) > 3 { |
1788
00f34a00e6d5
Octree: Don't crash in horizontal traversal if the tree is empty.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1692
diff
changeset
|
168 stack = append(stack, |
1790
fe1aa62195c2
Octree: Same emtry tree fix for horizontal as for vertical traversal. Re-worked both to be BCE friendly.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1788
diff
changeset
|
169 frame{index[0], min, max}, |
fe1aa62195c2
Octree: Same emtry tree fix for horizontal as for vertical traversal. Re-worked both to be BCE friendly.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1788
diff
changeset
|
170 frame{index[1], min, max}, |
fe1aa62195c2
Octree: Same emtry tree fix for horizontal as for vertical traversal. Re-worked both to be BCE friendly.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1788
diff
changeset
|
171 frame{index[2], min, max}, |
fe1aa62195c2
Octree: Same emtry tree fix for horizontal as for vertical traversal. Re-worked both to be BCE friendly.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1788
diff
changeset
|
172 frame{index[3], min, max}) |
1788
00f34a00e6d5
Octree: Don't crash in horizontal traversal if the tree is empty.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1692
diff
changeset
|
173 } |
707
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
174 } else { // leaf |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
175 pos = -pos - 1 |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
176 n := ot.index[pos] |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
177 //log.Printf("%d %d %d\n", pos, n, len(ot.index)) |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
178 indices := ot.index[pos+1 : pos+1+n] |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
179 |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
180 for _, idx := range indices { |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
181 if _, found := dupes[idx]; found { |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
182 continue |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
183 } |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
184 tri := ot.triangles[idx] |
726
5af9ab39e715
Renamed a few types to uppercase names to prepare the move to the octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
707
diff
changeset
|
185 t := Triangle{ |
707
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
186 ot.vertices[tri[0]], |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
187 ot.vertices[tri[1]], |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
188 ot.vertices[tri[2]], |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
189 } |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
190 |
727
41c8dc61f38f
Moved octree loading stuff to octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
726
diff
changeset
|
191 if !(math.Min(t[0].Z, math.Min(t[1].Z, t[2].Z)) > h || |
41c8dc61f38f
Moved octree loading stuff to octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
726
diff
changeset
|
192 math.Max(t[0].Z, math.Max(t[1].Z, t[2].Z)) < h) { |
707
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
193 dupes[idx] = struct{}{} |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
194 fn(&t) |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
195 } |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
196 } |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
197 } |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
198 } |
9db4ae29ded9
octree: Moved octree traveral code to own file.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
199 } |