Mercurial > gemma

annotate pkg/octree/tree.go @ 2006:35acb7f9ae0c

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Do anything else before expectedly failing role creation Creating roles during database setup expectedly fails in case there already is another gemma database in the cluster. Doing it at the end of the transaction ensures it does not hide errors in other commands in the script. In passing, add the default admin via the designated view to ensure it will become a correctly set up application user.
author Tom Gottfried <tom@intevation.de>
date Thu, 24 Jan 2019 17:23:43 +0100
parents fe1aa62195c2
children a1e751c08c56
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1017
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1 // This is Free Software under GNU Affero General Public License v >= 3.0
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2 // without warranty, see README.md and license for details.
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3 //
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4 // SPDX-License-Identifier: AGPL-3.0-or-later
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5 // License-Filename: LICENSES/AGPL-3.0.txt
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6 //
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7 // Copyright (C) 2018 by via donau
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8 // – Österreichische Wasserstraßen-Gesellschaft mbH
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9 // Software engineering by Intevation GmbH
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10 //
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11 // Author(s):
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12 // * Sascha L. Teichmann <sascha.teichmann@intevation.de>
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13
727
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14 package octree
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15
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16 import (
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17 "math"
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18 )
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19
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20 // Tree is an Octree holding triangles.
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21 type Tree struct {
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22 // EPSG is the projection.
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23 EPSG uint32
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24
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25 vertices []Vertex
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26 triangles [][]int32
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27 index []int32
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28
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29 // Min is the lower left corner of the bbox.
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30 Min Vertex
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31 // Max is the upper right corner of the bbox.
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32 Max Vertex
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33 }
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34
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35 var scale = [4][4]float64{
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36 {0.0, 0.0, 0.5, 0.5},
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37 {0.5, 0.0, 1.0, 0.5},
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38 {0.0, 0.5, 0.5, 1.0},
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39 {0.5, 0.5, 1.0, 1.0},
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40 }
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41
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42 // Vertical does a vertical cross cut from (x1, y1) to (x2, y2).
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43 func (ot *Tree) Vertical(x1, y1, x2, y2 float64, fn func(*Triangle)) {
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44
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45 box := Box2D{
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46 X1: math.Min(x1, x2),
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47 Y1: math.Min(y1, y2),
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48 X2: math.Max(x1, x2),
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49 Y2: math.Max(y1, y2),
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50 }
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51
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52 // out of bounding box
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53 if box.X2 < ot.Min.X || ot.Max.X < box.X1 ||
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54 box.Y2 < ot.Min.Y || ot.Max.Y < box.Y1 {
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55 return
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56 }
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57
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58 line := NewPlane2D(x1, y1, x2, y2)
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59
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60 type frame struct {
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61 pos int32
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62 Box2D
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63 }
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64
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65 dupes := map[int32]struct{}{}
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66
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67 all := Box2D{ot.Min.X, ot.Min.Y, ot.Max.X, ot.Max.Y}
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68 //log.Printf("area: %f\n", (box.x2-box.x1)*(box.y2-box.y1))
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69 //log.Printf("all: %f\n", (all.x2-all.x1)*(all.y2-all.y1))
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70
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71 stack := []frame{{1, all}}
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72
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73 for len(stack) > 0 {
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74 top := stack[len(stack)-1]
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75 stack = stack[:len(stack)-1]
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76
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77 if top.pos > 0 { // node
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78 if index := ot.index[top.pos:]; len(index) > 7 {
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79 for i := 0; i < 4; i++ {
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80 a := index[i]
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81 b := index[i+4]
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82 if a == 0 && b == 0 {
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83 continue
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84 }
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85 dx := top.X2 - top.X1
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86 dy := top.Y2 - top.Y1
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87 nbox := Box2D{
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88 dx*scale[i][0] + top.X1,
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89 dy*scale[i][1] + top.Y1,
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90 dx*scale[i][2] + top.X1,
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91 dy*scale[i][3] + top.Y1,
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92 }
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93 if nbox.Intersects(box) && nbox.IntersectsPlane(line) {
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94 if a != 0 {
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95 stack = append(stack, frame{a, nbox})
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96 }
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97 if b != 0 {
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98 stack = append(stack, frame{b, nbox})
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99 }
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100 }
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101 }
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102 }
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103 } else { // leaf
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104 pos := -top.pos - 1
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105 n := ot.index[pos]
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106 indices := ot.index[pos+1 : pos+1+n]
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107
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108 for _, idx := range indices {
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109 if _, found := dupes[idx]; found {
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110 continue
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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.
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parents: 755
diff changeset
113 t := Triangle{
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parents: 755
diff changeset
114 ot.vertices[tri[0]],
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parents: 755
diff changeset
115 ot.vertices[tri[1]],
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parents: 755
diff changeset
116 ot.vertices[tri[2]],
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diff changeset
117 }
5e14000829d1 Complete vertical octree traversal. Seems not very selective.
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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
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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
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parents: 755
diff changeset
125 fn(&t)
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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
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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.
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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 {
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
141 pos int32
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
142 min float64
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
143 max float64
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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
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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
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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parents:
diff changeset
175 pos = -pos - 1
9db4ae29ded9 octree: Moved octree traveral code to own file.
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parents:
diff changeset
176 n := ot.index[pos]
9db4ae29ded9 octree: Moved octree traveral code to own file.
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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 }