Mercurial > gemma
annotate pkg/mesh/vertex.go @ 5710:37c8feeecb4d
Merged branch sr-v2 into default.
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Tue, 20 Feb 2024 21:28:56 +0100 |
parents | 148abae1fcd0 |
children | 61eff98a40ae |
rev | line source |
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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 |
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14 package mesh |
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15 |
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16 import ( |
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17 "bytes" |
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18 "encoding/binary" |
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19 "fmt" |
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20 "io" |
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21 "math" |
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22 "sort" |
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23 |
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24 "gemma.intevation.de/gemma/pkg/log" |
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25 "gemma.intevation.de/gemma/pkg/wkb" |
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26 ) |
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27 |
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28 type ( |
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29 // Point is a 2D point. |
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30 Point struct { |
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31 X float64 |
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32 Y float64 |
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33 } |
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34 |
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35 // Vertex is a 3D vertex. |
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36 Vertex struct { |
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37 X float64 |
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38 Y float64 |
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39 Z float64 |
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40 } |
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41 |
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42 // Triangle is a triangle consisting of three vertices. |
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43 Triangle [3]Vertex |
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44 |
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45 // Line is a line defined by first vertex on that line |
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46 // and the second being the direction. |
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47 Line [2]Vertex |
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48 |
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49 // Box is a 3D box. |
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50 Box [2]Vertex |
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51 |
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52 // MultiPointZ is a set of vertices. |
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53 MultiPointZ []Vertex |
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54 |
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55 // LineStringZ is a line string formed of vertices. |
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56 LineStringZ []Vertex |
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57 |
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58 // MultiLineStringZ is a set of line strings. |
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59 MultiLineStringZ []LineStringZ |
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60 |
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61 // Box2D is 2D area from (X1, Y1) to (X2, Y2). |
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62 Box2D struct { |
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63 X1 float64 |
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64 Y1 float64 |
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65 X2 float64 |
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66 Y2 float64 |
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67 } |
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68 |
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69 // Plane2D is a 2D plane (a line in 2D space). |
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70 Plane2D struct { |
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71 A float64 |
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72 B float64 |
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73 C float64 |
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74 } |
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75 |
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76 // Plane3D is a 3D plane. |
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77 Plane3D struct { |
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78 A float64 |
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79 B float64 |
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80 C float64 |
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81 D float64 |
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82 } |
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83 ) |
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84 |
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85 // Plane3D returns the plane in which |
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86 // the three points of the triangles are in. |
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87 func (t *Triangle) Plane3D() Plane3D { |
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88 |
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89 v0 := t[1].Sub(t[0]) |
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90 v1 := t[2].Sub(t[0]) |
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91 n := v0.Cross(v1) |
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92 |
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93 // If the length of normal is near zero assume we have |
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94 // a plane constant in z with an average z value of |
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95 // the three vertices. |
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96 // This should protect us from the effects of collinear |
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97 // geometries. |
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98 l := n.Length() |
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99 if l < 1e-7 { |
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100 sum := t[0].Z + t[1].Z + t[2].Z |
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101 return Plane3D{ |
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102 A: 0, |
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103 B: 0, |
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104 C: 1, |
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105 D: -sum / 3, |
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106 } |
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107 } |
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108 n = n.Scale(1 / l) |
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109 |
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110 // x*nx+ y*ny+ z*nz + d = 0 |
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111 // d = - (x*nx+ y*ny + z*nz) |
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112 d := -t[0].Dot(n) |
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113 return Plane3D{ |
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114 A: n.X, |
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115 B: n.Y, |
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116 C: n.Z, |
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117 D: d, |
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118 } |
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119 } |
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120 |
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121 // BBox calculates the 2D (in X/Y plane) bounding box |
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122 // of the triangle. |
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123 func (t *Triangle) BBox() Box2D { |
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124 minX := math.Min(math.Min(t[0].X, t[1].X), t[2].X) |
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125 maxX := math.Max(math.Max(t[0].X, t[1].X), t[2].X) |
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126 minY := math.Min(math.Min(t[0].Y, t[1].Y), t[2].Y) |
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127 maxY := math.Max(math.Max(t[0].Y, t[1].Y), t[2].Y) |
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128 return Box2D{ |
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129 X1: minX, Y1: minY, |
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130 X2: maxX, Y2: maxY, |
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131 } |
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132 } |
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133 |
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134 // Inside test if b is completely inside a. |
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135 func (a Box2D) Inside(b Box2D) bool { |
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136 return a.X1 >= b.X1 && a.X2 <= b.X2 && |
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137 a.Y1 >= b.Y1 && a.Y2 <= b.Y2 |
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138 } |
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139 |
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140 // Size calculates the area of the box. |
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141 func (a Box2D) Size() (float64, float64) { |
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142 return a.X2 - a.X1, a.Y2 - a.Y1 |
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143 } |
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144 |
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145 // Empty returns true if the box has no area. |
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146 func (a Box2D) Empty() bool { |
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147 const eps = 0.0000001 |
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148 return math.Abs(a.X2-a.X1) < eps && |
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149 math.Abs(a.Y2-a.Y1) < eps |
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150 } |
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151 |
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152 // Z calculates the Z value for a given X/Y value. |
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153 func (p Plane3D) Z(x, y float64) float64 { |
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154 // p.A*x + p.B*y + p.C*z + p.D = 0 |
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155 return -(p.A*x + p.B*y + p.D) / p.C |
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156 } |
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157 |
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158 // Eval evalutes the plane equation for a given vertex. |
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159 func (p Plane3D) Eval(v Vertex) float64 { |
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160 return p.A*v.X + p.B*v.Y + p.C*v.Z + p.D |
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161 } |
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162 |
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163 // Normalize constructs a new vertex with unit length for a given vertex. |
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164 func (v Vertex) Normalize() Vertex { |
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165 s := 1 / v.Length() |
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166 return Vertex{ |
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167 X: s * v.X, |
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168 Y: s * v.Y, |
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169 Z: s * v.Z, |
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170 } |
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171 } |
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172 |
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173 // Dot returns the 3D dot product of the two given vertices. |
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174 func (v Vertex) Dot(w Vertex) float64 { |
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175 return v.X*w.X + v.Y*w.Y + v.Z*w.Z |
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176 } |
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177 |
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178 // Length return the length of the vertex. |
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179 func (v Vertex) Length() float64 { |
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180 return math.Sqrt(v.Dot(v)) |
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181 } |
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182 |
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183 // Box2D constructs a Box2D of this vertex. |
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184 func (v Vertex) Box2D() Box2D { |
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185 return Box2D{ |
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186 X1: v.X, |
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187 Y1: v.Y, |
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188 X2: v.X, |
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189 Y2: v.Y, |
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190 } |
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191 } |
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192 |
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193 func area(a, b, c Vertex) float64 { |
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194 return (b.Y-a.Y)*(c.X-b.X) - (b.X-a.X)*(c.Y-b.Y) |
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195 } |
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196 |
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197 func inCircle(a, b, c, p Vertex) bool { |
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198 dx := a.X - p.X |
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199 dy := a.Y - p.Y |
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200 ex := b.X - p.X |
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201 ey := b.Y - p.Y |
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202 fx := c.X - p.X |
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203 fy := c.Y - p.Y |
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204 |
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205 ap := dx*dx + dy*dy |
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206 bp := ex*ex + ey*ey |
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207 cp := fx*fx + fy*fy |
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208 |
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209 return dx*(ey*cp-bp*fy)-dy*(ex*cp-bp*fx)+ap*(ex*fy-ey*fx) < 0 |
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210 } |
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211 |
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212 func circumradius(a, b, c Vertex) float64 { |
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213 dx := b.X - a.X |
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214 dy := b.Y - a.Y |
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215 ex := c.X - a.X |
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216 ey := c.Y - a.Y |
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217 |
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218 bl := dx*dx + dy*dy |
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219 cl := ex*ex + ey*ey |
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220 d := dx*ey - dy*ex |
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221 |
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222 x := (ey*bl - dy*cl) * 0.5 / d |
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223 y := (dx*cl - ex*bl) * 0.5 / d |
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224 |
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225 r := x*x + y*y |
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226 |
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227 if bl == 0 || cl == 0 || d == 0 || r == 0 { |
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228 return infinity |
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229 } |
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230 |
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231 return r |
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232 } |
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233 |
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234 func circumcenter(a, b, c Vertex) Vertex { |
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235 dx := b.X - a.X |
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236 dy := b.Y - a.Y |
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237 ex := c.X - a.X |
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238 ey := c.Y - a.Y |
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239 |
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240 bl := dx*dx + dy*dy |
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241 cl := ex*ex + ey*ey |
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242 d := dx*ey - dy*ex |
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243 |
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244 x := a.X + (ey*bl-dy*cl)*0.5/d |
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245 y := a.Y + (dx*cl-ex*bl)*0.5/d |
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246 |
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247 return Vertex{X: x, Y: y} |
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248 } |
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249 |
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250 func polygonArea(points []Vertex) float64 { |
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251 var result float64 |
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252 for i, p := range points { |
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253 q := points[(i+1)%len(points)] |
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254 result += (p.X - q.X) * (p.Y + q.Y) |
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255 } |
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256 return result / 2 |
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257 } |
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258 |
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259 // Distance2D returns the distance of the two vertices in the X/Y plane. |
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260 func (v Vertex) Distance2D(w Vertex) float64 { |
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261 return math.Hypot(v.X-w.X, v.Y-w.Y) |
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262 } |
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263 |
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264 // Distance returns the distance of the two vertices. |
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265 func (v Vertex) Distance(w Vertex) float64 { |
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266 v = v.Sub(w) |
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267 return math.Sqrt(v.Dot(v)) |
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268 } |
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269 |
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270 // Minimize adjust this vertex v to hold the minimum |
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271 // values component-wise of v and w. |
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272 func (v *Vertex) Minimize(w Vertex) { |
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273 if w.X < v.X { |
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274 v.X = w.X |
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275 } |
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276 if w.Y < v.Y { |
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277 v.Y = w.Y |
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278 } |
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279 if w.Z < v.Z { |
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280 v.Z = w.Z |
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281 } |
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282 } |
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283 |
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284 // Maximize adjust this vertex v to hold the maximum |
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285 // values component-wise of v and w. |
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286 func (v *Vertex) Maximize(w Vertex) { |
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287 if w.X > v.X { |
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288 v.X = w.X |
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289 } |
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290 if w.Y > v.Y { |
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291 v.Y = w.Y |
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292 } |
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293 if w.Z > v.Z { |
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294 v.Z = w.Z |
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295 } |
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296 } |
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297 |
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298 // SquaredDistance2D returns the squared distances of the |
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299 // two given vertices in the X/Y plane. |
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300 func (v Vertex) SquaredDistance2D(w Vertex) float64 { |
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301 dx := v.X - w.X |
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302 dy := v.Y - w.Y |
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303 return dx*dx + dy*dy |
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304 } |
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305 |
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306 // Sub2D returns (v - w) component-wise. |
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307 func (v Vertex) Sub2D(w Vertex) Vertex { |
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308 return Vertex{ |
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309 X: v.X - w.X, |
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310 Y: v.Y - w.Y, |
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311 } |
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312 } |
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313 |
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314 // Sub returns (v - w) component-wise. |
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315 func (v Vertex) Sub(w Vertex) Vertex { |
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316 return Vertex{ |
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317 v.X - w.X, |
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318 v.Y - w.Y, |
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319 v.Z - w.Z, |
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320 } |
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321 } |
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322 |
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323 // Add returns (v + w) component-wise. |
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324 func (v Vertex) Add(w Vertex) Vertex { |
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325 return Vertex{ |
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326 v.X + w.X, |
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327 v.Y + w.Y, |
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328 v.Z + w.Z, |
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329 } |
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330 } |
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331 |
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332 // Scale returns s*v component-wise. |
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333 func (v Vertex) Scale(s float64) Vertex { |
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334 return Vertex{ |
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335 s * v.X, |
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336 s * v.Y, |
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337 s * v.Z, |
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338 } |
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339 } |
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340 |
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341 // Interpolate returns a function that return s*b[1] + b[0] |
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342 // component-wise. |
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343 func (b Box) Interpolate() func(Vertex) Vertex { |
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344 v1, v2 := b[0], b[1] |
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345 v2 = v2.Sub(v1) |
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346 return func(s Vertex) Vertex { |
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347 return Vertex{ |
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348 v2.X*s.X + v1.X, |
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349 v2.Y*s.Y + v1.Y, |
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350 v2.Z*s.Z + v1.Z, |
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351 } |
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352 } |
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353 } |
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354 |
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355 // Less returns if one of v component is less than the |
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356 // corresponing component in w. |
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357 func (v Vertex) Less(w Vertex) bool { |
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358 return v.X < w.X || v.Y < w.Y || v.Z < w.Z |
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359 } |
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360 |
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361 // NewLine return a line of point/direction. |
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362 func NewLine(p1, p2 Vertex) Line { |
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363 return Line{ |
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364 p2.Sub(p1), |
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365 p1, |
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366 } |
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367 } |
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368 |
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369 // Eval returns the vertex for t*l[0] + l[1]. |
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370 func (l Line) Eval(t float64) Vertex { |
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371 return l[0].Scale(t).Add(l[1]) |
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372 } |
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373 |
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374 // IntersectHorizontal returns the intersection point |
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375 // for a given z value. |
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376 func (l Line) IntersectHorizontal(h float64) Vertex { |
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377 t := (h - l[1].Z) / l[0].Z |
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378 return l.Eval(t) |
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379 } |
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380 |
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381 func side(z, h float64) int { |
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382 switch { |
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383 case z < h: |
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384 return -1 |
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385 case z > h: |
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386 return +1 |
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387 } |
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388 return 0 |
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389 } |
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390 |
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391 // Dot2 calculates the 2D dot product of the vertices. |
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392 func (v Vertex) Dot2(w Vertex) float64 { |
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393 return v.X*w.X + v.Y*w.Y |
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394 } |
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395 |
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396 // Contains returns true if the given point is inside the triangle. |
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397 func (t *Triangle) Contains(x, y float64) bool { |
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398 v0 := t[2].Sub2D(t[0]) |
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399 v1 := t[1].Sub2D(t[0]) |
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400 v2 := Vertex{X: x, Y: y}.Sub2D(t[0]) |
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401 |
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402 dot00 := v0.Dot2(v0) |
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403 dot01 := v0.Dot2(v1) |
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404 dot02 := v0.Dot2(v2) |
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405 dot11 := v1.Dot2(v1) |
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406 dot12 := v1.Dot2(v2) |
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407 |
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408 // Compute barycentric coordinates |
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409 invDenom := 1 / (dot00*dot11 - dot01*dot01) |
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410 u := (dot11*dot02 - dot01*dot12) * invDenom |
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411 v := (dot00*dot12 - dot01*dot02) * invDenom |
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412 |
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parents:
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changeset
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413 // Check if point is in triangle |
a1e751c08c56
Calculate difference on single core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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diff
changeset
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414 return u >= 0 && v >= 0 && u+v < 1 |
a1e751c08c56
Calculate difference on single core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1692
diff
changeset
|
415 } |
a1e751c08c56
Calculate difference on single core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1692
diff
changeset
|
416 |
1692
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1691
diff
changeset
|
417 // IntersectHorizontal calculates the line string that |
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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diff
changeset
|
418 // results when cutting a triangle a a certain height. |
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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diff
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|
419 // Can be empty (on intersection), |
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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diff
changeset
|
420 // one vertex (only touching an vertex) or |
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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changeset
|
421 // two vertices (real intersection). |
726
5af9ab39e715
Renamed a few types to uppercase names to prepare the move to the octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
718
diff
changeset
|
422 func (t *Triangle) IntersectHorizontal(h float64) LineStringZ { |
687
be90ab542aa7
octree: contouring: Do the math to calculate the intersection points of the triangles and the planes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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diff
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423 sides := [3]int{ |
727
41c8dc61f38f
Moved octree loading stuff to octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
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diff
changeset
|
424 side(t[0].Z, h), |
41c8dc61f38f
Moved octree loading stuff to octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
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changeset
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425 side(t[1].Z, h), |
41c8dc61f38f
Moved octree loading stuff to octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
726
diff
changeset
|
426 side(t[2].Z, h), |
687
be90ab542aa7
octree: contouring: Do the math to calculate the intersection points of the triangles and the planes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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diff
changeset
|
427 } |
be90ab542aa7
octree: contouring: Do the math to calculate the intersection points of the triangles and the planes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
674
diff
changeset
|
428 |
726
5af9ab39e715
Renamed a few types to uppercase names to prepare the move to the octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
718
diff
changeset
|
429 var points LineStringZ |
689
614135d69823
octree: prepare storing the lines to file in contouring tool.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
687
diff
changeset
|
430 |
687
be90ab542aa7
octree: contouring: Do the math to calculate the intersection points of the triangles and the planes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
674
diff
changeset
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431 for i := 0; i < 3; i++ { |
be90ab542aa7
octree: contouring: Do the math to calculate the intersection points of the triangles and the planes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
674
diff
changeset
|
432 j := (i + 1) % 3 |
be90ab542aa7
octree: contouring: Do the math to calculate the intersection points of the triangles and the planes.
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parents:
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diff
changeset
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433 si := sides[i] |
be90ab542aa7
octree: contouring: Do the math to calculate the intersection points of the triangles and the planes.
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parents:
674
diff
changeset
|
434 sj := sides[j] |
be90ab542aa7
octree: contouring: Do the math to calculate the intersection points of the triangles and the planes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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diff
changeset
|
435 |
be90ab542aa7
octree: contouring: Do the math to calculate the intersection points of the triangles and the planes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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diff
changeset
|
436 switch { |
be90ab542aa7
octree: contouring: Do the math to calculate the intersection points of the triangles and the planes.
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parents:
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diff
changeset
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437 case si == 0 && sj == 0: |
be90ab542aa7
octree: contouring: Do the math to calculate the intersection points of the triangles and the planes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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diff
changeset
|
438 // both on plane |
be90ab542aa7
octree: contouring: Do the math to calculate the intersection points of the triangles and the planes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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439 points = append(points, t[i], t[j]) |
be90ab542aa7
octree: contouring: Do the math to calculate the intersection points of the triangles and the planes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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|
440 case si == 0 && sj != 0: |
be90ab542aa7
octree: contouring: Do the math to calculate the intersection points of the triangles and the planes.
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parents:
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changeset
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441 // first on plane |
be90ab542aa7
octree: contouring: Do the math to calculate the intersection points of the triangles and the planes.
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parents:
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442 points = append(points, t[i]) |
be90ab542aa7
octree: contouring: Do the math to calculate the intersection points of the triangles and the planes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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changeset
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443 case si != 0 && sj == 0: |
be90ab542aa7
octree: contouring: Do the math to calculate the intersection points of the triangles and the planes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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changeset
|
444 // second on plane |
be90ab542aa7
octree: contouring: Do the math to calculate the intersection points of the triangles and the planes.
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parents:
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|
445 points = append(points, t[j]) |
be90ab542aa7
octree: contouring: Do the math to calculate the intersection points of the triangles and the planes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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changeset
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446 case si == sj: |
be90ab542aa7
octree: contouring: Do the math to calculate the intersection points of the triangles and the planes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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changeset
|
447 // both on same side |
be90ab542aa7
octree: contouring: Do the math to calculate the intersection points of the triangles and the planes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
674
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changeset
|
448 default: |
be90ab542aa7
octree: contouring: Do the math to calculate the intersection points of the triangles and the planes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
674
diff
changeset
|
449 // real intersection |
726
5af9ab39e715
Renamed a few types to uppercase names to prepare the move to the octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
718
diff
changeset
|
450 v := NewLine(t[i], t[j]).IntersectHorizontal(h) |
687
be90ab542aa7
octree: contouring: Do the math to calculate the intersection points of the triangles and the planes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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diff
changeset
|
451 points = append(points, v) |
be90ab542aa7
octree: contouring: Do the math to calculate the intersection points of the triangles and the planes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
674
diff
changeset
|
452 } |
be90ab542aa7
octree: contouring: Do the math to calculate the intersection points of the triangles and the planes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
674
diff
changeset
|
453 } |
be90ab542aa7
octree: contouring: Do the math to calculate the intersection points of the triangles and the planes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
674
diff
changeset
|
454 |
be90ab542aa7
octree: contouring: Do the math to calculate the intersection points of the triangles and the planes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
674
diff
changeset
|
455 return points |
be90ab542aa7
octree: contouring: Do the math to calculate the intersection points of the triangles and the planes.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
674
diff
changeset
|
456 } |
726
5af9ab39e715
Renamed a few types to uppercase names to prepare the move to the octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
718
diff
changeset
|
457 |
768
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
763
diff
changeset
|
458 func linearScale(x1, y1, x2, y2 float64) func(Vertex) float64 { |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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diff
changeset
|
459 dx := x2 - x1 |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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diff
changeset
|
460 dy := y2 - y1 |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
763
diff
changeset
|
461 |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
763
diff
changeset
|
462 switch { |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
763
diff
changeset
|
463 case dx != 0: |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
763
diff
changeset
|
464 return func(v Vertex) float64 { |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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diff
changeset
|
465 return (v.X - x1) / dx |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
763
diff
changeset
|
466 } |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
763
diff
changeset
|
467 case dy != 0: |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
763
diff
changeset
|
468 return func(v Vertex) float64 { |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
763
diff
changeset
|
469 return (v.Y - y1) / dy |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
763
diff
changeset
|
470 } |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
763
diff
changeset
|
471 default: |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
763
diff
changeset
|
472 return func(Vertex) float64 { |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
763
diff
changeset
|
473 return 0 |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
763
diff
changeset
|
474 } |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
763
diff
changeset
|
475 } |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
763
diff
changeset
|
476 } |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
763
diff
changeset
|
477 |
4854
b9599e5e8004
Added missing doc strings to the geometry models in the mesh package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
4833
diff
changeset
|
478 // BBox calcultes the 2D bounding box in the X/Y plane |
b9599e5e8004
Added missing doc strings to the geometry models in the mesh package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
4833
diff
changeset
|
479 // of the given line string. |
3639
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
480 func (ls LineStringZ) BBox() Box2D { |
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
481 |
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
482 min := Vertex{math.MaxFloat64, math.MaxFloat64, math.MaxFloat64} |
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
483 max := Vertex{-math.MaxFloat64, -math.MaxFloat64, -math.MaxFloat64} |
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
484 |
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
485 for _, v := range ls { |
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
486 min.Minimize(v) |
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
487 max.Maximize(v) |
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
488 } |
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
489 |
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
490 return Box2D{ |
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
491 X1: min.X, |
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
492 Y1: min.Y, |
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
493 X2: max.X, |
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
494 Y2: max.Y, |
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
495 } |
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
496 } |
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
497 |
4854
b9599e5e8004
Added missing doc strings to the geometry models in the mesh package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
4833
diff
changeset
|
498 // Area calculated the area of the line string. |
3639
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
499 func (ls LineStringZ) Area() float64 { |
3646
810b28f59b8b
Generate random points for second mesh.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
3639
diff
changeset
|
500 return polygonArea(ls) |
3639
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
501 } |
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
502 |
4854
b9599e5e8004
Added missing doc strings to the geometry models in the mesh package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
4833
diff
changeset
|
503 // Reverse reverses the the vertices of this line string in place. |
3639
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
504 func (ls LineStringZ) Reverse() { |
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
505 for i, j := 0, len(ls)-1; i < j; i, j = i+1, j-1 { |
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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diff
changeset
|
506 ls[i], ls[j] = ls[j], ls[i] |
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
507 } |
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
508 } |
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
509 |
768
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
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510 func (ls LineStringZ) order(position func(Vertex) float64) { |
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511 type posVertex struct { |
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512 pos float64 |
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513 v Vertex |
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514 } |
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Join neighbored linestring segments in octree cross sections and sort them along the input line.
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515 positions := make([]posVertex, len(ls)) |
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516 for i, v := range ls { |
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Join neighbored linestring segments in octree cross sections and sort them along the input line.
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517 positions[i] = posVertex{position(v), v} |
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518 } |
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519 sort.Slice(positions, func(i, j int) bool { |
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520 return positions[i].pos < positions[j].pos |
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521 }) |
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522 for i := range positions { |
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523 ls[i] = positions[i].v |
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524 } |
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525 } |
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526 |
1692
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Octree: Resolved the remaing golint issues with this package.
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527 // EpsEquals returns true if v and w are equal component-wise |
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528 // with the values within a epsilon range. |
768
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529 func (v Vertex) EpsEquals(w Vertex) bool { |
769
ba2007b746ef
Fixed nasty typo.
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parents:
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530 const eps = 1e-5 |
768
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531 return math.Abs(v.X-w.X) < eps && |
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532 math.Abs(v.Y-w.Y) < eps && math.Abs(v.Z-w.Z) < eps |
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533 } |
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534 |
4854
b9599e5e8004
Added missing doc strings to the geometry models in the mesh package.
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parents:
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535 // EpsEquals2D returns true if v and w are equal component-wise |
4550
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Write iso lines between classes to SVG for debugging.
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536 // in the X/Y plane with the values within a epsilon range. |
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Write iso lines between classes to SVG for debugging.
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537 func (v Vertex) EpsEquals2D(w Vertex) bool { |
aa2d0006e742
Write iso lines between classes to SVG for debugging.
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538 const eps = 1e-5 |
aa2d0006e742
Write iso lines between classes to SVG for debugging.
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parents:
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539 return math.Abs(v.X-w.X) < eps && |
aa2d0006e742
Write iso lines between classes to SVG for debugging.
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parents:
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changeset
|
540 math.Abs(v.Y-w.Y) < eps |
aa2d0006e742
Write iso lines between classes to SVG for debugging.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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diff
changeset
|
541 } |
aa2d0006e742
Write iso lines between classes to SVG for debugging.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
4542
diff
changeset
|
542 |
1692
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
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parents:
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|
543 // JoinOnLine joins the the elements of a given multi line string |
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
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544 // under the assumption that the segments are all on the line segment |
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|
545 // from (x1, y1) to (x2, y2). |
763
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More infrastructure for the octree driven cross section endpoint.
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parents:
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diff
changeset
|
546 func (mls MultiLineStringZ) JoinOnLine(x1, y1, x2, y2 float64) MultiLineStringZ { |
768
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Join neighbored linestring segments in octree cross sections and sort them along the input line.
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|
547 |
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Join neighbored linestring segments in octree cross sections and sort them along the input line.
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548 position := linearScale(x1, y1, x2, y2) |
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Join neighbored linestring segments in octree cross sections and sort them along the input line.
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549 |
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Join neighbored linestring segments in octree cross sections and sort them along the input line.
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550 type posLineString struct { |
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Join neighbored linestring segments in octree cross sections and sort them along the input line.
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551 pos float64 |
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Join neighbored linestring segments in octree cross sections and sort them along the input line.
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552 line LineStringZ |
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Join neighbored linestring segments in octree cross sections and sort them along the input line.
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553 } |
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Join neighbored linestring segments in octree cross sections and sort them along the input line.
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554 |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
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|
555 positions := make([]posLineString, 0, len(mls)) |
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Join neighbored linestring segments in octree cross sections and sort them along the input line.
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|
556 |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
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557 for _, ls := range mls { |
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Join neighbored linestring segments in octree cross sections and sort them along the input line.
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558 if len(ls) == 0 { |
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Join neighbored linestring segments in octree cross sections and sort them along the input line.
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559 continue |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
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|
560 } |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
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|
561 // order the atoms first |
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Join neighbored linestring segments in octree cross sections and sort them along the input line.
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562 ls.order(position) |
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563 positions = append(positions, posLineString{position(ls[0]), ls}) |
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Join neighbored linestring segments in octree cross sections and sort them along the input line.
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|
564 } |
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Join neighbored linestring segments in octree cross sections and sort them along the input line.
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|
565 |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
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|
566 sort.Slice(positions, func(i, j int) bool { |
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Join neighbored linestring segments in octree cross sections and sort them along the input line.
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567 return positions[i].pos < positions[j].pos |
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Join neighbored linestring segments in octree cross sections and sort them along the input line.
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|
568 }) |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
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|
569 |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
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|
570 out := make(MultiLineStringZ, 0, len(positions)) |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
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571 |
796
0cc97135717c
More fixes to vertical triangle intersection.
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|
572 var ignored int |
0cc97135717c
More fixes to vertical triangle intersection.
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|
573 |
768
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
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|
574 for i := range positions { |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
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|
575 curr := positions[i].line |
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Join neighbored linestring segments in octree cross sections and sort them along the input line.
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|
576 if l := len(out); l > 0 { |
796
0cc97135717c
More fixes to vertical triangle intersection.
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|
577 last := out[l-1] |
0cc97135717c
More fixes to vertical triangle intersection.
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diff
changeset
|
578 |
0cc97135717c
More fixes to vertical triangle intersection.
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parents:
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changeset
|
579 if last[len(last)-1].EpsEquals(curr[0]) { |
768
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
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|
580 out[l-1] = append(last[:len(last)-1], curr...) |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
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|
581 continue |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
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diff
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|
582 } |
796
0cc97135717c
More fixes to vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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diff
changeset
|
583 if position(last[len(last)-1]) > position(curr[0]) { |
0cc97135717c
More fixes to vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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diff
changeset
|
584 ignored++ |
0cc97135717c
More fixes to vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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diff
changeset
|
585 continue |
0cc97135717c
More fixes to vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
795
diff
changeset
|
586 } |
768
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
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parents:
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diff
changeset
|
587 } |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
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|
588 out = append(out, curr) |
3219e7e34953
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|
589 } |
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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diff
changeset
|
590 |
5490
5f47eeea988d
Use own logging package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5428
diff
changeset
|
591 log.Infof("ignored parts: %d\n", ignored) |
796
0cc97135717c
More fixes to vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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diff
changeset
|
592 |
768
3219e7e34953
Join neighbored linestring segments in octree cross sections and sort them along the input line.
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changeset
|
593 return out |
763
d05bc3e34338
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parents:
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diff
changeset
|
594 } |
d05bc3e34338
More infrastructure for the octree driven cross section endpoint.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
730
diff
changeset
|
595 |
1692
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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|
596 // Write writes a Vertex as three 64 bit values in little endian order |
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
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changeset
|
597 // to the given writer. |
729
b0bd242ff821
Removed vertex duplicate.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
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diff
changeset
|
598 func (v *Vertex) Write(w io.Writer) error { |
b0bd242ff821
Removed vertex duplicate.
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|
599 if err := binary.Write( |
b0bd242ff821
Removed vertex duplicate.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
727
diff
changeset
|
600 w, binary.LittleEndian, math.Float64bits(v.X)); err != nil { |
b0bd242ff821
Removed vertex duplicate.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
727
diff
changeset
|
601 return err |
b0bd242ff821
Removed vertex duplicate.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
727
diff
changeset
|
602 } |
b0bd242ff821
Removed vertex duplicate.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
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diff
changeset
|
603 if err := binary.Write( |
b0bd242ff821
Removed vertex duplicate.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
727
diff
changeset
|
604 w, binary.LittleEndian, math.Float64bits(v.Y)); err != nil { |
b0bd242ff821
Removed vertex duplicate.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
727
diff
changeset
|
605 return err |
b0bd242ff821
Removed vertex duplicate.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
727
diff
changeset
|
606 } |
b0bd242ff821
Removed vertex duplicate.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
727
diff
changeset
|
607 return binary.Write( |
b0bd242ff821
Removed vertex duplicate.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
727
diff
changeset
|
608 w, binary.LittleEndian, math.Float64bits(v.Z)) |
b0bd242ff821
Removed vertex duplicate.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
727
diff
changeset
|
609 } |
b0bd242ff821
Removed vertex duplicate.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
727
diff
changeset
|
610 |
1692
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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1691
diff
changeset
|
611 // Read fills this vertex with three 64 bit values stored as |
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
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1691
diff
changeset
|
612 // little endian from the given reader. |
729
b0bd242ff821
Removed vertex duplicate.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
727
diff
changeset
|
613 func (v *Vertex) Read(r io.Reader) error { |
726
5af9ab39e715
Renamed a few types to uppercase names to prepare the move to the octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
718
diff
changeset
|
614 var buf [8]byte |
5af9ab39e715
Renamed a few types to uppercase names to prepare the move to the octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
718
diff
changeset
|
615 b := buf[:] |
5af9ab39e715
Renamed a few types to uppercase names to prepare the move to the octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
718
diff
changeset
|
616 if _, err := io.ReadFull(r, b); err != nil { |
5af9ab39e715
Renamed a few types to uppercase names to prepare the move to the octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
718
diff
changeset
|
617 return nil |
5af9ab39e715
Renamed a few types to uppercase names to prepare the move to the octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
718
diff
changeset
|
618 } |
727
41c8dc61f38f
Moved octree loading stuff to octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
726
diff
changeset
|
619 v.X = math.Float64frombits(binary.LittleEndian.Uint64(b)) |
41c8dc61f38f
Moved octree loading stuff to octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
726
diff
changeset
|
620 if _, err := io.ReadFull(r, b); err != nil { |
41c8dc61f38f
Moved octree loading stuff to octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
726
diff
changeset
|
621 return nil |
41c8dc61f38f
Moved octree loading stuff to octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
726
diff
changeset
|
622 } |
41c8dc61f38f
Moved octree loading stuff to octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
726
diff
changeset
|
623 v.Y = math.Float64frombits(binary.LittleEndian.Uint64(b)) |
726
5af9ab39e715
Renamed a few types to uppercase names to prepare the move to the octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
718
diff
changeset
|
624 if _, err := io.ReadFull(r, b); err != nil { |
5af9ab39e715
Renamed a few types to uppercase names to prepare the move to the octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
718
diff
changeset
|
625 return nil |
5af9ab39e715
Renamed a few types to uppercase names to prepare the move to the octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
718
diff
changeset
|
626 } |
727
41c8dc61f38f
Moved octree loading stuff to octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
726
diff
changeset
|
627 v.Z = math.Float64frombits(binary.LittleEndian.Uint64(b)) |
726
5af9ab39e715
Renamed a few types to uppercase names to prepare the move to the octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
718
diff
changeset
|
628 return nil |
5af9ab39e715
Renamed a few types to uppercase names to prepare the move to the octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
718
diff
changeset
|
629 } |
727
41c8dc61f38f
Moved octree loading stuff to octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
726
diff
changeset
|
630 |
1692
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1691
diff
changeset
|
631 // AsWKB returns the WKB representation of the given multi line string. |
727
41c8dc61f38f
Moved octree loading stuff to octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
726
diff
changeset
|
632 func (mls MultiLineStringZ) AsWKB() []byte { |
41c8dc61f38f
Moved octree loading stuff to octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
726
diff
changeset
|
633 |
924
c8146132059e
Precalculate WKB size for MultiLineStringZ to avoid reallocations.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
824
diff
changeset
|
634 // pre-calculate size to avoid reallocations. |
c8146132059e
Precalculate WKB size for MultiLineStringZ to avoid reallocations.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
824
diff
changeset
|
635 size := 1 + 4 + 4 |
c8146132059e
Precalculate WKB size for MultiLineStringZ to avoid reallocations.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
824
diff
changeset
|
636 for _, ml := range mls { |
c8146132059e
Precalculate WKB size for MultiLineStringZ to avoid reallocations.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
824
diff
changeset
|
637 size += 1 + 4 + 4 + len(ml)*3*8 |
c8146132059e
Precalculate WKB size for MultiLineStringZ to avoid reallocations.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
824
diff
changeset
|
638 } |
727
41c8dc61f38f
Moved octree loading stuff to octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
726
diff
changeset
|
639 |
924
c8146132059e
Precalculate WKB size for MultiLineStringZ to avoid reallocations.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
824
diff
changeset
|
640 buf := bytes.NewBuffer(make([]byte, 0, size)) |
c8146132059e
Precalculate WKB size for MultiLineStringZ to avoid reallocations.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
824
diff
changeset
|
641 |
2471
63475c8e710e
Moved WKB constants to own package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2466
diff
changeset
|
642 binary.Write(buf, binary.LittleEndian, wkb.NDR) |
63475c8e710e
Moved WKB constants to own package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2466
diff
changeset
|
643 binary.Write(buf, binary.LittleEndian, wkb.MultiLineStringZ) |
924
c8146132059e
Precalculate WKB size for MultiLineStringZ to avoid reallocations.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
824
diff
changeset
|
644 binary.Write(buf, binary.LittleEndian, uint32(len(mls))) |
727
41c8dc61f38f
Moved octree loading stuff to octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
726
diff
changeset
|
645 |
41c8dc61f38f
Moved octree loading stuff to octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
726
diff
changeset
|
646 for _, ml := range mls { |
2471
63475c8e710e
Moved WKB constants to own package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2466
diff
changeset
|
647 binary.Write(buf, binary.LittleEndian, wkb.NDR) |
63475c8e710e
Moved WKB constants to own package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2466
diff
changeset
|
648 binary.Write(buf, binary.LittleEndian, wkb.LineStringZ) |
924
c8146132059e
Precalculate WKB size for MultiLineStringZ to avoid reallocations.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
824
diff
changeset
|
649 binary.Write(buf, binary.LittleEndian, uint32(len(ml))) |
727
41c8dc61f38f
Moved octree loading stuff to octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
726
diff
changeset
|
650 for _, p := range ml { |
924
c8146132059e
Precalculate WKB size for MultiLineStringZ to avoid reallocations.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
824
diff
changeset
|
651 binary.Write(buf, binary.LittleEndian, math.Float64bits(p.X)) |
c8146132059e
Precalculate WKB size for MultiLineStringZ to avoid reallocations.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
824
diff
changeset
|
652 binary.Write(buf, binary.LittleEndian, math.Float64bits(p.Y)) |
c8146132059e
Precalculate WKB size for MultiLineStringZ to avoid reallocations.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
824
diff
changeset
|
653 binary.Write(buf, binary.LittleEndian, math.Float64bits(p.Z)) |
727
41c8dc61f38f
Moved octree loading stuff to octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
726
diff
changeset
|
654 } |
41c8dc61f38f
Moved octree loading stuff to octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
726
diff
changeset
|
655 } |
41c8dc61f38f
Moved octree loading stuff to octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
726
diff
changeset
|
656 |
41c8dc61f38f
Moved octree loading stuff to octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
726
diff
changeset
|
657 return buf.Bytes() |
41c8dc61f38f
Moved octree loading stuff to octree package.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
726
diff
changeset
|
658 } |
774
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
659 |
1692
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1691
diff
changeset
|
660 // AsWKB2D returns the WKB representation of the given multi line string |
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1691
diff
changeset
|
661 // leaving the z component out. |
925
15bf101e1522
Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
924
diff
changeset
|
662 func (mls MultiLineStringZ) AsWKB2D() []byte { |
15bf101e1522
Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
924
diff
changeset
|
663 |
15bf101e1522
Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
924
diff
changeset
|
664 // pre-calculate size to avoid reallocations. |
15bf101e1522
Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
924
diff
changeset
|
665 size := 1 + 4 + 4 |
15bf101e1522
Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
924
diff
changeset
|
666 for _, ml := range mls { |
15bf101e1522
Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
924
diff
changeset
|
667 size += 1 + 4 + 4 + len(ml)*2*8 |
15bf101e1522
Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
924
diff
changeset
|
668 } |
15bf101e1522
Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
924
diff
changeset
|
669 |
15bf101e1522
Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
924
diff
changeset
|
670 buf := bytes.NewBuffer(make([]byte, 0, size)) |
15bf101e1522
Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
924
diff
changeset
|
671 |
2471
63475c8e710e
Moved WKB constants to own package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2466
diff
changeset
|
672 binary.Write(buf, binary.LittleEndian, wkb.NDR) |
63475c8e710e
Moved WKB constants to own package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2466
diff
changeset
|
673 binary.Write(buf, binary.LittleEndian, wkb.MultiLineString) |
925
15bf101e1522
Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
924
diff
changeset
|
674 binary.Write(buf, binary.LittleEndian, uint32(len(mls))) |
15bf101e1522
Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
924
diff
changeset
|
675 |
15bf101e1522
Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
924
diff
changeset
|
676 for _, ml := range mls { |
2471
63475c8e710e
Moved WKB constants to own package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2466
diff
changeset
|
677 binary.Write(buf, binary.LittleEndian, wkb.NDR) |
63475c8e710e
Moved WKB constants to own package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2466
diff
changeset
|
678 binary.Write(buf, binary.LittleEndian, wkb.LineString) |
925
15bf101e1522
Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
924
diff
changeset
|
679 binary.Write(buf, binary.LittleEndian, uint32(len(ml))) |
15bf101e1522
Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
924
diff
changeset
|
680 for _, p := range ml { |
15bf101e1522
Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
924
diff
changeset
|
681 binary.Write(buf, binary.LittleEndian, math.Float64bits(p.X)) |
15bf101e1522
Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
924
diff
changeset
|
682 binary.Write(buf, binary.LittleEndian, math.Float64bits(p.Y)) |
15bf101e1522
Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
924
diff
changeset
|
683 } |
15bf101e1522
Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
924
diff
changeset
|
684 } |
15bf101e1522
Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
924
diff
changeset
|
685 |
15bf101e1522
Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
924
diff
changeset
|
686 return buf.Bytes() |
15bf101e1522
Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
924
diff
changeset
|
687 } |
15bf101e1522
Send 2D X/Y vertices to the database directly instead of sending 3D data and dropping the Z value afterwards.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
924
diff
changeset
|
688 |
4854
b9599e5e8004
Added missing doc strings to the geometry models in the mesh package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
4833
diff
changeset
|
689 // CCW returns true if this line string is oriented counter clockwise. |
4542
56f4e8cbfab7
Sew together triangles that totally inside a single class.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
3953
diff
changeset
|
690 func (ls LineStringZ) CCW() bool { |
56f4e8cbfab7
Sew together triangles that totally inside a single class.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
3953
diff
changeset
|
691 var sum float64 |
56f4e8cbfab7
Sew together triangles that totally inside a single class.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
3953
diff
changeset
|
692 for i, v1 := range ls { |
56f4e8cbfab7
Sew together triangles that totally inside a single class.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
3953
diff
changeset
|
693 v2 := ls[(i+1)%len(ls)] |
56f4e8cbfab7
Sew together triangles that totally inside a single class.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
3953
diff
changeset
|
694 sum += (v2.X - v1.X) * (v2.Y + v1.Y) |
56f4e8cbfab7
Sew together triangles that totally inside a single class.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
3953
diff
changeset
|
695 } |
56f4e8cbfab7
Sew together triangles that totally inside a single class.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
3953
diff
changeset
|
696 return sum > 0 |
56f4e8cbfab7
Sew together triangles that totally inside a single class.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
3953
diff
changeset
|
697 } |
56f4e8cbfab7
Sew together triangles that totally inside a single class.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
3953
diff
changeset
|
698 |
1692
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1691
diff
changeset
|
699 // Join joins two lines leaving the first of the second out. |
928
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
700 func (ls LineStringZ) Join(other LineStringZ) LineStringZ { |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
701 nline := make(LineStringZ, len(ls)+len(other)-1) |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
702 copy(nline, ls) |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
703 copy(nline[len(ls):], other[1:]) |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
704 return nline |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
705 } |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
706 |
1692
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1691
diff
changeset
|
707 // Merge merges line segments of a given multi line string |
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1691
diff
changeset
|
708 // by finding common start and end vertices. |
928
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
709 func (mls MultiLineStringZ) Merge() MultiLineStringZ { |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
710 |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
711 var out MultiLineStringZ |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
712 |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
713 min := Vertex{math.MaxFloat64, math.MaxFloat64, math.MaxFloat64} |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
714 |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
715 for _, line := range mls { |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
716 for _, v := range line { |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
717 min.Minimize(v) |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
718 } |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
719 } |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
720 |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
721 type point struct { |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
722 x int64 |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
723 y int64 |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
724 } |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
725 |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
726 const precision = 1e7 |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
727 |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
728 quant := func(v Vertex) point { |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
729 return point{ |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
730 x: int64(math.Round((v.X - min.X) * precision)), |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
731 y: int64(math.Round((v.Y - min.Y) * precision)), |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
732 } |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
733 } |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
734 |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
735 heads := make(map[point]*[]LineStringZ) |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
736 |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
737 for _, line := range mls { |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
738 if len(line) < 2 { |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
739 out = append(out, line) |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
740 continue |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
741 } |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
742 head := quant(line[0]) |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
743 tail := quant(line[len(line)-1]) |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
744 if head == tail { // its already a ring |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
745 out = append(out, line) |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
746 continue |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
747 } |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
748 |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
749 if hs := heads[tail]; hs != nil { |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
750 l := len(*hs) |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
751 last := (*hs)[l-1] |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
752 if l == 1 { |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
753 delete(heads, tail) |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
754 } else { |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
755 (*hs)[l-1] = nil |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
756 *hs = (*hs)[:l-1] |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
757 } |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
758 line = line.Join(last) |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
759 |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
760 if head == quant(line[len(line)-1]) { // its a ring |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
761 out = append(out, line) |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
762 continue |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
763 } |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
764 } |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
765 |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
766 if hs := heads[head]; hs != nil { |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
767 *hs = append(*hs, line) |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
768 } else { |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
769 heads[head] = &[]LineStringZ{line} |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
770 } |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
771 } |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
772 |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
773 again: |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
774 for head, lines := range heads { |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
775 for i, line := range *lines { |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
776 tail := quant(line[len(line)-1]) |
940
be7b83638ec8
Simplified line merging in generating contour lines.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
928
diff
changeset
|
777 for hs := heads[tail]; hs != nil && len(*hs) > 0; hs = heads[tail] { |
928
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
778 l := len(*hs) |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
779 last := (*hs)[l-1] |
940
be7b83638ec8
Simplified line merging in generating contour lines.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
928
diff
changeset
|
780 (*hs)[l-1] = nil |
be7b83638ec8
Simplified line merging in generating contour lines.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
928
diff
changeset
|
781 *hs = (*hs)[:l-1] |
928
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
782 line = line.Join(last) |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
783 |
940
be7b83638ec8
Simplified line merging in generating contour lines.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
928
diff
changeset
|
784 if tail = quant(line[len(line)-1]); head == tail { // its a ring |
928
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
785 out = append(out, line) |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
786 // remove from current lines |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
787 copy((*lines)[i:], (*lines)[i+1:]) |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
788 (*lines)[len(*lines)-1] = nil |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
789 *lines = (*lines)[:len(*lines)-1] |
940
be7b83638ec8
Simplified line merging in generating contour lines.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
928
diff
changeset
|
790 goto again |
928
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
791 } |
940
be7b83638ec8
Simplified line merging in generating contour lines.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
928
diff
changeset
|
792 // overwrite in current lines |
be7b83638ec8
Simplified line merging in generating contour lines.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
928
diff
changeset
|
793 (*lines)[i] = line |
928
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
794 } |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
795 } |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
796 } |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
797 |
988
7dfd3db94e6d
In preparation of persisting import jobs logging is done through an interface.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
968
diff
changeset
|
798 // rings := len(out) |
928
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
799 |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
800 // The rest are open line strings. |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
801 for _, lines := range heads { |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
802 for _, line := range *lines { |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
803 out = append(out, line) |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
804 } |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
805 } |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
806 |
5490
5f47eeea988d
Use own logging package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5428
diff
changeset
|
807 // log.Debugf("segments before/after merge: %d/%d (%d rings)\n", |
988
7dfd3db94e6d
In preparation of persisting import jobs logging is done through an interface.
Sascha L. Teichmann <teichmann@intevation.de>
parents:
968
diff
changeset
|
808 // len(mls), len(out), rings) |
928
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
809 |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
810 return out |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
811 } |
0a0013fbda4a
octree2contour: Merge multi linestrings in user land before sending them to database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
925
diff
changeset
|
812 |
4854
b9599e5e8004
Added missing doc strings to the geometry models in the mesh package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
4833
diff
changeset
|
813 // Rect returns the bounding box of this box as separated coordinates. |
5320
866eae1bd888
Upgraded the dependencies of the Gemma server.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
4854
diff
changeset
|
814 func (a Box2D) Rect() ([2]float64, [2]float64) { |
866eae1bd888
Upgraded the dependencies of the Gemma server.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
4854
diff
changeset
|
815 return [2]float64{a.X1, a.Y1}, [2]float64{a.X2, a.Y2} |
2492
10681749371d
Implemented the BBox/clipping polygon test. TODO: triangle/clipping polygon test.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2483
diff
changeset
|
816 } |
10681749371d
Implemented the BBox/clipping polygon test. TODO: triangle/clipping polygon test.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2483
diff
changeset
|
817 |
1692
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1691
diff
changeset
|
818 // Intersects checks if two Box2Ds intersect. |
774
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
819 func (a Box2D) Intersects(b Box2D) bool { |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
820 return !(a.X2 < a.X1 || a.X2 < b.X1 || |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
821 a.Y2 < a.Y1 || a.Y2 < b.Y1) |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
822 } |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
823 |
4854
b9599e5e8004
Added missing doc strings to the geometry models in the mesh package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
4833
diff
changeset
|
824 // Contains returns true if the given point is inside the box. |
2466
a1e751c08c56
Calculate difference on single core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1692
diff
changeset
|
825 func (a Box2D) Contains(x, y float64) bool { |
a1e751c08c56
Calculate difference on single core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1692
diff
changeset
|
826 return a.X1 <= x && x <= a.X2 && |
a1e751c08c56
Calculate difference on single core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1692
diff
changeset
|
827 a.Y1 <= y && y <= a.Y2 |
a1e751c08c56
Calculate difference on single core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1692
diff
changeset
|
828 } |
a1e751c08c56
Calculate difference on single core.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1692
diff
changeset
|
829 |
1692
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1691
diff
changeset
|
830 // Xi returns the i-th x component. |
774
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
831 func (a Box2D) Xi(i int) float64 { |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
832 if i == 0 { |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
833 return a.X1 |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
834 } |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
835 return a.X2 |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
836 } |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
837 |
1692
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1691
diff
changeset
|
838 // Yi returns the i-th y component. |
774
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
839 func (a Box2D) Yi(i int) float64 { |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
840 if i == 0 { |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
841 return a.Y1 |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
842 } |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
843 return a.Y2 |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
844 } |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
845 |
4854
b9599e5e8004
Added missing doc strings to the geometry models in the mesh package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
4833
diff
changeset
|
846 // Union calculates the united bounding box of the two given boxes. |
2512
2768f74d54ab
Added an STRTree for the triangulation. Should be better suited for filtering out the clipped triangles.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2494
diff
changeset
|
847 func (a Box2D) Union(b Box2D) Box2D { |
2768f74d54ab
Added an STRTree for the triangulation. Should be better suited for filtering out the clipped triangles.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2494
diff
changeset
|
848 return Box2D{ |
2768f74d54ab
Added an STRTree for the triangulation. Should be better suited for filtering out the clipped triangles.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2494
diff
changeset
|
849 X1: math.Min(a.X1, b.X1), |
2768f74d54ab
Added an STRTree for the triangulation. Should be better suited for filtering out the clipped triangles.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2494
diff
changeset
|
850 Y1: math.Min(a.Y1, b.Y1), |
2768f74d54ab
Added an STRTree for the triangulation. Should be better suited for filtering out the clipped triangles.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2494
diff
changeset
|
851 X2: math.Max(a.X2, b.X2), |
2768f74d54ab
Added an STRTree for the triangulation. Should be better suited for filtering out the clipped triangles.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2494
diff
changeset
|
852 Y2: math.Max(a.Y2, b.Y2), |
2768f74d54ab
Added an STRTree for the triangulation. Should be better suited for filtering out the clipped triangles.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2494
diff
changeset
|
853 } |
2768f74d54ab
Added an STRTree for the triangulation. Should be better suited for filtering out the clipped triangles.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2494
diff
changeset
|
854 } |
2768f74d54ab
Added an STRTree for the triangulation. Should be better suited for filtering out the clipped triangles.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2494
diff
changeset
|
855 |
4854
b9599e5e8004
Added missing doc strings to the geometry models in the mesh package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
4833
diff
changeset
|
856 // Area returns the area of the box. |
3639
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
857 func (a Box2D) Area() float64 { |
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
858 return (a.X2 - a.X1) * (a.Y2 - a.Y1) |
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
859 } |
2a4216c81e7b
Extract the removed triangles from first triangulation, too. Useful to build a artifical DEM for second pass.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2572
diff
changeset
|
860 |
1692
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1691
diff
changeset
|
861 // NewPlane2D creates a new Plane2D from two given points. |
774
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
862 func NewPlane2D(x1, y1, x2, y2 float64) Plane2D { |
778
9be20bd0f131
Fixed a bug with 2d planes (lines) found while working on line intersections.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
774
diff
changeset
|
863 b := x2 - x1 |
9be20bd0f131
Fixed a bug with 2d planes (lines) found while working on line intersections.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
774
diff
changeset
|
864 a := -(y2 - y1) |
774
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
865 |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
866 l := math.Sqrt(a*a + b*b) |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
867 a /= l |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
868 b /= l |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
869 |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
870 // a*x1 + b*y1 + c = 0 |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
871 c := -(a*x1 + b*y1) |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
872 return Plane2D{a, b, c} |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
873 } |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
874 |
1692
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1691
diff
changeset
|
875 // Eval determines the distance of a given point |
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1691
diff
changeset
|
876 // from the plane. The sign of the result indicates |
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1691
diff
changeset
|
877 // the sideness. |
774
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
878 func (p Plane2D) Eval(x, y float64) float64 { |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
879 return p.A*x + p.B*y + p.C |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
880 } |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
881 |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
882 const epsPlane = 1e-5 |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
883 |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
884 func sides(s int, x float64) int { |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
885 if math.Signbit(x) { |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
886 return s | 2 |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
887 } |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
888 return s | 1 |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
889 } |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
890 |
1692
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1691
diff
changeset
|
891 // IntersectsPlane checks if a Box2D intersects with |
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1691
diff
changeset
|
892 // a given Plane2D. |
774
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
893 func (a Box2D) IntersectsPlane(p Plane2D) bool { |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
894 var s int |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
895 for i := 0; i < 2; i++ { |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
896 x := a.Xi(i) |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
897 for j := 0; j < 2; j++ { |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
898 y := a.Yi(j) |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
899 v := p.Eval(x, y) |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
900 if math.Abs(v) < epsPlane { |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
901 //log.Printf("on line") |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
902 return true |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
903 } |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
904 if s = sides(s, v); s == 3 { |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
905 //log.Printf("... on both sides (djt)") |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
906 return true |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
907 } |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
908 } |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
909 } |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
910 //log.Printf("side: %d\n", s) |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
911 return false |
c55771b7c502
Moved Box2D and Plane2D into vertex.go and made to API public.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
769
diff
changeset
|
912 } |
778
9be20bd0f131
Fixed a bug with 2d planes (lines) found while working on line intersections.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
774
diff
changeset
|
913 |
1692
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1691
diff
changeset
|
914 // Cross calculates the cross product of two vertices. |
1329
ea2143adc6d3
Named method recievers consistently to make golint happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1017
diff
changeset
|
915 func (v Vertex) Cross(w Vertex) Vertex { |
778
9be20bd0f131
Fixed a bug with 2d planes (lines) found while working on line intersections.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
774
diff
changeset
|
916 return Vertex{ |
1329
ea2143adc6d3
Named method recievers consistently to make golint happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1017
diff
changeset
|
917 v.Y*w.Z - v.Z*w.Y, |
ea2143adc6d3
Named method recievers consistently to make golint happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1017
diff
changeset
|
918 v.Z*w.X - v.X*w.Z, |
ea2143adc6d3
Named method recievers consistently to make golint happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1017
diff
changeset
|
919 v.X*w.Y - v.Y*w.X, |
778
9be20bd0f131
Fixed a bug with 2d planes (lines) found while working on line intersections.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
774
diff
changeset
|
920 } |
9be20bd0f131
Fixed a bug with 2d planes (lines) found while working on line intersections.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
774
diff
changeset
|
921 } |
9be20bd0f131
Fixed a bug with 2d planes (lines) found while working on line intersections.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
774
diff
changeset
|
922 |
1692
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1691
diff
changeset
|
923 // Intersection calcultes the 2D intersection point of |
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1691
diff
changeset
|
924 // two Plane2Ds. If they do not intersect the returned |
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1691
diff
changeset
|
925 // bool flags is set to false. |
1329
ea2143adc6d3
Named method recievers consistently to make golint happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1017
diff
changeset
|
926 func (p Plane2D) Intersection(o Plane2D) (float64, float64, bool) { |
778
9be20bd0f131
Fixed a bug with 2d planes (lines) found while working on line intersections.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
774
diff
changeset
|
927 |
1329
ea2143adc6d3
Named method recievers consistently to make golint happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1017
diff
changeset
|
928 u1 := Vertex{p.A, p.B, p.C} |
ea2143adc6d3
Named method recievers consistently to make golint happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1017
diff
changeset
|
929 u2 := Vertex{o.A, o.B, o.C} |
778
9be20bd0f131
Fixed a bug with 2d planes (lines) found while working on line intersections.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
774
diff
changeset
|
930 |
1329
ea2143adc6d3
Named method recievers consistently to make golint happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1017
diff
changeset
|
931 plane := u1.Cross(u2) |
778
9be20bd0f131
Fixed a bug with 2d planes (lines) found while working on line intersections.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
774
diff
changeset
|
932 |
1329
ea2143adc6d3
Named method recievers consistently to make golint happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1017
diff
changeset
|
933 if plane.Z == 0 { |
778
9be20bd0f131
Fixed a bug with 2d planes (lines) found while working on line intersections.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
774
diff
changeset
|
934 return 0, 0, false |
9be20bd0f131
Fixed a bug with 2d planes (lines) found while working on line intersections.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
774
diff
changeset
|
935 } |
9be20bd0f131
Fixed a bug with 2d planes (lines) found while working on line intersections.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
774
diff
changeset
|
936 |
1329
ea2143adc6d3
Named method recievers consistently to make golint happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1017
diff
changeset
|
937 return plane.X / plane.Z, plane.Y / plane.Z, true |
778
9be20bd0f131
Fixed a bug with 2d planes (lines) found while working on line intersections.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
774
diff
changeset
|
938 } |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
939 |
1692
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1691
diff
changeset
|
940 // VerticalLine is a 2D line segment. |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
941 type VerticalLine struct { |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
942 x1 float64 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
943 y1 float64 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
944 x2 float64 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
945 y2 float64 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
946 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
947 line Plane2D |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
948 } |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
949 |
1692
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1691
diff
changeset
|
950 // NewVerticalLine creates a new 2D line segment. |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
951 func NewVerticalLine(x1, y1, x2, y2 float64) *VerticalLine { |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
952 return &VerticalLine{ |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
953 x1: x1, |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
954 y1: y1, |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
955 x2: x2, |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
956 y2: y2, |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
957 line: NewPlane2D(x1, y1, x2, y2), |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
958 } |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
959 } |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
960 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
961 func onPlane(x float64) bool { return math.Abs(x) < epsPlane } |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
962 |
788
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
963 func relative(v1, v2 Vertex) func(x, y float64) float64 { |
795
bd5f38eb6153
Vertical Triangle intersection: Fixed function to determine where intersection point
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
792
diff
changeset
|
964 ls := linearScale(v1.X, v1.Y, v2.X, v2.Y) |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
965 return func(x, y float64) float64 { |
795
bd5f38eb6153
Vertical Triangle intersection: Fixed function to determine where intersection point
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
792
diff
changeset
|
966 return ls(Vertex{x, y, 0}) |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
967 } |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
968 } |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
969 |
788
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
970 func interpolate(a, b float64) func(float64) float64 { |
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
971 return func(x float64) float64 { |
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
972 return (b-a)*x + a |
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
973 } |
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
974 } |
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
975 |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
976 func linear(v1, v2 Vertex) func(t float64) Vertex { |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
977 return func(t float64) Vertex { |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
978 return Vertex{ |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
979 (v2.X-v1.X)*t + v1.X, |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
980 (v2.Y-v1.Y)*t + v1.Y, |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
981 (v2.Z-v1.Z)*t + v1.Z, |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
982 } |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
983 } |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
984 } |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
985 |
788
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
986 func inRange(a float64) bool { return 0 <= a && a <= 1 } |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
987 |
1692
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1691
diff
changeset
|
988 // Intersection intersects a line segment with a triangle. |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
989 func (vl *VerticalLine) Intersection(t *Triangle) LineStringZ { |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
990 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
991 var out LineStringZ |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
992 |
815
01019d4c8359
Cross section: Made triangle intersection less spammy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
813
diff
changeset
|
993 //defer func() { log.Printf("length out: %d\n", len(out)) }() |
796
0cc97135717c
More fixes to vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
795
diff
changeset
|
994 |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
995 edges: |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
996 for i := 0; i < 3 && len(out) < 2; i++ { |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
997 j := (i + 1) % 3 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
998 edge := NewPlane2D(t[i].X, t[i].Y, t[j].X, t[j].Y) |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
999 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1000 s1 := edge.Eval(vl.x1, vl.y1) |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1001 s2 := edge.Eval(vl.x2, vl.y2) |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1002 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1003 o1 := onPlane(s1) |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1004 o2 := onPlane(s2) |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1005 |
815
01019d4c8359
Cross section: Made triangle intersection less spammy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
813
diff
changeset
|
1006 // log.Printf("s1, s2: %t %t (%f %f)\n", o1, o2, s1, s2) |
795
bd5f38eb6153
Vertical Triangle intersection: Fixed function to determine where intersection point
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
792
diff
changeset
|
1007 |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1008 switch { |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1009 case o1 && o2: |
788
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
1010 pos := relative(t[i], t[j]) |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1011 t1 := pos(vl.x1, vl.y1) |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1012 t2 := pos(vl.x2, vl.y2) |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1013 |
788
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
1014 r1 := inRange(t1) |
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
1015 r2 := inRange(t2) |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1016 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1017 switch { |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1018 case r1 && r2: |
788
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
1019 lin := linear(t[i], t[j]) |
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
1020 out = append(out, lin(t1), lin(t2)) |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1021 return out |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1022 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1023 case !r1 && !r2: // the hole edge |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1024 out = append(out, t[i], t[j]) |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1025 return out |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1026 case !r1: |
789
d43e61044ad8
Fill in last remaining corner cases in vertical triangle interpolation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
788
diff
changeset
|
1027 if t1 < 0 { |
d43e61044ad8
Fill in last remaining corner cases in vertical triangle interpolation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
788
diff
changeset
|
1028 // below first -> clip by first |
d43e61044ad8
Fill in last remaining corner cases in vertical triangle interpolation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
788
diff
changeset
|
1029 lin := linear(t[i], t[j]) |
d43e61044ad8
Fill in last remaining corner cases in vertical triangle interpolation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
788
diff
changeset
|
1030 out = append(out, t[i], lin(t2)) |
d43e61044ad8
Fill in last remaining corner cases in vertical triangle interpolation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
788
diff
changeset
|
1031 } else { |
d43e61044ad8
Fill in last remaining corner cases in vertical triangle interpolation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
788
diff
changeset
|
1032 // above second -> clip by second |
d43e61044ad8
Fill in last remaining corner cases in vertical triangle interpolation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
788
diff
changeset
|
1033 lin := linear(t[i], t[j]) |
d43e61044ad8
Fill in last remaining corner cases in vertical triangle interpolation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
788
diff
changeset
|
1034 out = append(out, lin(t2), t[j]) |
d43e61044ad8
Fill in last remaining corner cases in vertical triangle interpolation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
788
diff
changeset
|
1035 } |
d43e61044ad8
Fill in last remaining corner cases in vertical triangle interpolation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
788
diff
changeset
|
1036 return out |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1037 case !r2: |
789
d43e61044ad8
Fill in last remaining corner cases in vertical triangle interpolation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
788
diff
changeset
|
1038 if t2 < 0 { |
d43e61044ad8
Fill in last remaining corner cases in vertical triangle interpolation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
788
diff
changeset
|
1039 // below first -> clip by first |
d43e61044ad8
Fill in last remaining corner cases in vertical triangle interpolation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
788
diff
changeset
|
1040 lin := linear(t[i], t[j]) |
d43e61044ad8
Fill in last remaining corner cases in vertical triangle interpolation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
788
diff
changeset
|
1041 out = append(out, t[i], lin(t1)) |
d43e61044ad8
Fill in last remaining corner cases in vertical triangle interpolation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
788
diff
changeset
|
1042 } else { |
d43e61044ad8
Fill in last remaining corner cases in vertical triangle interpolation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
788
diff
changeset
|
1043 // above second -> clip by second |
d43e61044ad8
Fill in last remaining corner cases in vertical triangle interpolation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
788
diff
changeset
|
1044 lin := linear(t[i], t[j]) |
d43e61044ad8
Fill in last remaining corner cases in vertical triangle interpolation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
788
diff
changeset
|
1045 out = append(out, lin(t1), t[j]) |
d43e61044ad8
Fill in last remaining corner cases in vertical triangle interpolation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
788
diff
changeset
|
1046 } |
d43e61044ad8
Fill in last remaining corner cases in vertical triangle interpolation.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
788
diff
changeset
|
1047 return out |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1048 } |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1049 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1050 case o1: |
788
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
1051 t1 := relative(t[i], t[j])(vl.x1, vl.y1) |
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
1052 if !inRange(t1) { |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1053 continue edges |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1054 } |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1055 out = append(out, linear(t[i], t[j])(t1)) |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1056 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1057 case o2: |
788
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
1058 t2 := relative(t[i], t[j])(vl.x2, vl.y2) |
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
1059 if !inRange(t2) { |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1060 continue edges |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1061 } |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1062 out = append(out, linear(t[i], t[j])(t2)) |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1063 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1064 default: |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1065 x, y, intersects := vl.line.Intersection(edge) |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1066 if !intersects { |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1067 continue edges |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1068 } |
795
bd5f38eb6153
Vertical Triangle intersection: Fixed function to determine where intersection point
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
792
diff
changeset
|
1069 |
815
01019d4c8359
Cross section: Made triangle intersection less spammy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
813
diff
changeset
|
1070 // log.Println("Intersection -----------------------------") |
788
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
1071 t1 := relative(t[i], t[j])(x, y) |
815
01019d4c8359
Cross section: Made triangle intersection less spammy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
813
diff
changeset
|
1072 // log.Printf("relative pos: %f\n", t1) |
788
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
1073 if !inRange(t1) { |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1074 continue edges |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1075 } |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1076 |
815
01019d4c8359
Cross section: Made triangle intersection less spammy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
813
diff
changeset
|
1077 // log.Println("valid ***************") |
795
bd5f38eb6153
Vertical Triangle intersection: Fixed function to determine where intersection point
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
792
diff
changeset
|
1078 |
788
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
1079 z := interpolate(t[j].Z, t[i].Z)(t1) |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1080 n := Vertex{x, y, z} |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1081 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1082 if math.Signbit(s1) != math.Signbit(s2) { |
815
01019d4c8359
Cross section: Made triangle intersection less spammy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
813
diff
changeset
|
1083 // log.Println("\ton different sides") |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1084 // different sides -> vertex on edge. |
788
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
1085 out = append(out, n) |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1086 } else { // same side -> inside. Find peer |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1087 if len(out) > 0 { // we already have our peer |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1088 out = append(out, n) |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1089 return out |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1090 } |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1091 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1092 for k := 0; k < 3; k++ { |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1093 if k == i { |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1094 continue |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1095 } |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1096 l := (k + 1) % 3 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1097 other := NewPlane2D(t[k].X, t[k].Y, t[l].X, t[l].Y) |
813
1a808929c2c5
Cross sections: Fixed problem that certain inputs don't deliver data.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
796
diff
changeset
|
1098 xo, yo, intersects := vl.line.Intersection(other) |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1099 if !intersects { |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1100 continue |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1101 } |
813
1a808929c2c5
Cross sections: Fixed problem that certain inputs don't deliver data.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
796
diff
changeset
|
1102 t2 := relative(t[k], t[l])(xo, yo) |
788
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
1103 if !inRange(t2) { |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1104 continue |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1105 } |
813
1a808929c2c5
Cross sections: Fixed problem that certain inputs don't deliver data.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
796
diff
changeset
|
1106 zo := interpolate(t[k].Z, t[l].Z)(t2) |
788
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
1107 |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1108 m := Vertex{xo, yo, zo} |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1109 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1110 var xn, yn, xf, yf float64 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1111 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1112 // Which is nearer to current edge? |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1113 if math.Abs(s1) < math.Abs(s2) { |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1114 xn, yn = vl.x1, vl.y1 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1115 xf, yf = vl.x2, vl.y2 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1116 } else { |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1117 xn, yn = vl.x2, vl.y2 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1118 xf, yf = vl.x1, vl.y1 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1119 } |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1120 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1121 if onPlane(other.Eval(xn, yn)) { |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1122 // triangle intersect in only point |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1123 // treat as no intersection |
788
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
1124 break edges |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1125 } |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1126 |
788
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
1127 pos := relative(n, m) |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1128 |
788
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
1129 tzn := pos(xn, yn) |
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
1130 tzf := pos(xf, yf) |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1131 |
788
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
1132 if !inRange(tzn) { |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1133 // if near is out of range far is, too. |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1134 return out |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1135 } |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1136 |
788
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
1137 lin := interpolate(n.Z, m.Z) |
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
1138 |
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
1139 if inRange(tzf) { |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1140 m.X = xf |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1141 m.Y = yf |
788
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
1142 m.Z = lin(tzf) |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1143 } // else m is clipping |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1144 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1145 n.X = xn |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1146 n.Y = yn |
788
9f3a4a60dc04
Cleaned up interpolation mess in vertical triangle intersection.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
787
diff
changeset
|
1147 n.Z = lin(tzn) |
787
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1148 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1149 out = append(out, n, m) |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1150 return out |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1151 } |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1152 } |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1153 } |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1154 } |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1155 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1156 // supress single point touches. |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1157 if len(out) == 1 { |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1158 out = out[:0] |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1159 } |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1160 |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1161 return out |
3d927e06b92c
Triangle intersection. WIP. Currently interpolation is messed up.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
778
diff
changeset
|
1162 } |
959
6ab012d0f0c2
Started with writing an importer job for sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
940
diff
changeset
|
1163 |
5706
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1164 // QuantizeXY quantize the X/Y values to scale and |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1165 // removes duplicates in place. The z value of |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1166 // duplicates will be averaged pairwise. |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1167 func (mpz MultiPointZ) QuantizeXY(scale float64) MultiPointZ { |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1168 type qpoint struct { |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1169 x int64 |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1170 y int64 |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1171 } |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1172 m := make(map[qpoint]float64, len(mpz)) |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1173 for _, p := range mpz { |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1174 k := qpoint{ |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1175 x: int64(math.Round(p.X * scale)), |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1176 y: int64(math.Round(p.Y * scale)), |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1177 } |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1178 if z, ok := m[k]; ok { |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1179 m[k] = (z + p.Z) * 0.5 |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1180 } else { |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1181 m[k] = p.Z |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1182 } |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1183 } |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1184 i := 0 |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1185 invScale := 1 / scale |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1186 for k, z := range m { |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1187 mpz[i] = Vertex{ |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1188 X: float64(k.x) * invScale, |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1189 Y: float64(k.y) * invScale, |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1190 Z: z, |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1191 } |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1192 i++ |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1193 } |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1194 return mpz[:i] |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1195 } |
148abae1fcd0
Quantize xyz in points in X/Y to 1/QuantScale.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5703
diff
changeset
|
1196 |
5428
b8d5f1cd15fb
Simplified classification. Needs testing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5419
diff
changeset
|
1197 // Filter returns a copy removed the vertices which |
b8d5f1cd15fb
Simplified classification. Needs testing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5419
diff
changeset
|
1198 // don't pass the filter test. |
b8d5f1cd15fb
Simplified classification. Needs testing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5419
diff
changeset
|
1199 func (mpz MultiPointZ) Filter(filter func(Vertex) bool) MultiPointZ { |
b8d5f1cd15fb
Simplified classification. Needs testing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5419
diff
changeset
|
1200 n := make(MultiPointZ, 0, len(mpz)) |
b8d5f1cd15fb
Simplified classification. Needs testing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5419
diff
changeset
|
1201 for _, v := range mpz { |
b8d5f1cd15fb
Simplified classification. Needs testing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5419
diff
changeset
|
1202 if filter(v) { |
b8d5f1cd15fb
Simplified classification. Needs testing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5419
diff
changeset
|
1203 n = append(n, v) |
5418
e89ff1894bb4
Don't clip the points against the border polygon. The implemented way was wrong.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5416
diff
changeset
|
1204 } |
e89ff1894bb4
Don't clip the points against the border polygon. The implemented way was wrong.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5416
diff
changeset
|
1205 } |
5428
b8d5f1cd15fb
Simplified classification. Needs testing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5419
diff
changeset
|
1206 return n |
5418
e89ff1894bb4
Don't clip the points against the border polygon. The implemented way was wrong.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5416
diff
changeset
|
1207 } |
e89ff1894bb4
Don't clip the points against the border polygon. The implemented way was wrong.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5416
diff
changeset
|
1208 |
5601
1222b777f51f
Made golint finally happy.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5490
diff
changeset
|
1209 // MinMax returns the extend of the point set. |
5428
b8d5f1cd15fb
Simplified classification. Needs testing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5419
diff
changeset
|
1210 func (mpz MultiPointZ) MinMax() (Vertex, Vertex) { |
5413
99f32f0dc70c
Added tools to classify vertices by their heights with class breaks.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5320
diff
changeset
|
1211 min := Vertex{math.MaxFloat64, math.MaxFloat64, math.MaxFloat64} |
99f32f0dc70c
Added tools to classify vertices by their heights with class breaks.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5320
diff
changeset
|
1212 max := Vertex{-math.MaxFloat64, -math.MaxFloat64, -math.MaxFloat64} |
5428
b8d5f1cd15fb
Simplified classification. Needs testing.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5419
diff
changeset
|
1213 for _, v := range mpz { |
5413
99f32f0dc70c
Added tools to classify vertices by their heights with class breaks.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5320
diff
changeset
|
1214 min.Minimize(v) |
99f32f0dc70c
Added tools to classify vertices by their heights with class breaks.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5320
diff
changeset
|
1215 max.Maximize(v) |
99f32f0dc70c
Added tools to classify vertices by their heights with class breaks.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5320
diff
changeset
|
1216 } |
99f32f0dc70c
Added tools to classify vertices by their heights with class breaks.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5320
diff
changeset
|
1217 return min, max |
99f32f0dc70c
Added tools to classify vertices by their heights with class breaks.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5320
diff
changeset
|
1218 } |
99f32f0dc70c
Added tools to classify vertices by their heights with class breaks.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
5320
diff
changeset
|
1219 |
1692
f4dcbe8941a1
Octree: Resolved the remaing golint issues with this package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
1691
diff
changeset
|
1220 // AsWKB returns a WKB representation of the given point cloud. |
959
6ab012d0f0c2
Started with writing an importer job for sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
940
diff
changeset
|
1221 func (mpz MultiPointZ) AsWKB() []byte { |
6ab012d0f0c2
Started with writing an importer job for sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
940
diff
changeset
|
1222 size := 1 + 4 + 4 + len(mpz)*(1+4+3*8) |
6ab012d0f0c2
Started with writing an importer job for sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
940
diff
changeset
|
1223 |
6ab012d0f0c2
Started with writing an importer job for sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
940
diff
changeset
|
1224 buf := bytes.NewBuffer(make([]byte, 0, size)) |
6ab012d0f0c2
Started with writing an importer job for sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
940
diff
changeset
|
1225 |
2471
63475c8e710e
Moved WKB constants to own package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2466
diff
changeset
|
1226 binary.Write(buf, binary.LittleEndian, wkb.NDR) |
63475c8e710e
Moved WKB constants to own package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2466
diff
changeset
|
1227 binary.Write(buf, binary.LittleEndian, wkb.MultiPointZ) |
959
6ab012d0f0c2
Started with writing an importer job for sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
940
diff
changeset
|
1228 binary.Write(buf, binary.LittleEndian, uint32(len(mpz))) |
6ab012d0f0c2
Started with writing an importer job for sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
940
diff
changeset
|
1229 |
2472
db0e4ab57977
Turn new point cloud into WKB form of MultiPointZ.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2471
diff
changeset
|
1230 perPoint := bytes.NewBuffer(make([]byte, 0, 1+4)) |
db0e4ab57977
Turn new point cloud into WKB form of MultiPointZ.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2471
diff
changeset
|
1231 binary.Write(perPoint, binary.LittleEndian, wkb.NDR) |
db0e4ab57977
Turn new point cloud into WKB form of MultiPointZ.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2471
diff
changeset
|
1232 binary.Write(perPoint, binary.LittleEndian, wkb.PointZ) |
db0e4ab57977
Turn new point cloud into WKB form of MultiPointZ.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2471
diff
changeset
|
1233 hdr := perPoint.Bytes() |
db0e4ab57977
Turn new point cloud into WKB form of MultiPointZ.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2471
diff
changeset
|
1234 |
959
6ab012d0f0c2
Started with writing an importer job for sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
940
diff
changeset
|
1235 for _, p := range mpz { |
2472
db0e4ab57977
Turn new point cloud into WKB form of MultiPointZ.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2471
diff
changeset
|
1236 buf.Write(hdr) |
959
6ab012d0f0c2
Started with writing an importer job for sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
940
diff
changeset
|
1237 binary.Write(buf, binary.LittleEndian, math.Float64bits(p.X)) |
6ab012d0f0c2
Started with writing an importer job for sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
940
diff
changeset
|
1238 binary.Write(buf, binary.LittleEndian, math.Float64bits(p.Y)) |
6ab012d0f0c2
Started with writing an importer job for sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
940
diff
changeset
|
1239 binary.Write(buf, binary.LittleEndian, math.Float64bits(p.Z)) |
6ab012d0f0c2
Started with writing an importer job for sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
940
diff
changeset
|
1240 } |
6ab012d0f0c2
Started with writing an importer job for sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
940
diff
changeset
|
1241 |
6ab012d0f0c2
Started with writing an importer job for sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
940
diff
changeset
|
1242 return buf.Bytes() |
6ab012d0f0c2
Started with writing an importer job for sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
940
diff
changeset
|
1243 } |
2529
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1244 |
4854
b9599e5e8004
Added missing doc strings to the geometry models in the mesh package.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
4833
diff
changeset
|
1245 // FromWKB de-serializes this multi point z geometry from a WKB representation. |
2529
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1246 func (mpz *MultiPointZ) FromWKB(data []byte) error { |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1247 |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1248 r := bytes.NewReader(data) |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1249 |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1250 endian, err := r.ReadByte() |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1251 |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1252 var order binary.ByteOrder |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1253 |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1254 switch { |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1255 case err != nil: |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1256 return err |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1257 case endian == wkb.NDR: |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1258 order = binary.LittleEndian |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1259 case endian == wkb.XDR: |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1260 order = binary.BigEndian |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1261 default: |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1262 return fmt.Errorf("unknown byte order %x", endian) |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1263 } |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1264 |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1265 var geomType uint32 |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1266 err = binary.Read(r, order, &geomType) |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1267 |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1268 switch { |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1269 case err != nil: |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1270 return err |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1271 case geomType != wkb.MultiPointZ: |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1272 return fmt.Errorf("unknown geometry type %x", geomType) |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1273 } |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1274 |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1275 var numPoints uint32 |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1276 if err := binary.Read(r, order, &numPoints); err != nil { |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1277 return err |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1278 } |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1279 |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1280 points := make(MultiPointZ, numPoints) |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1281 |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1282 for i := range points { |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1283 endian, err = r.ReadByte() |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1284 |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1285 switch { |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1286 case err != nil: |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1287 return err |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1288 case endian == wkb.NDR: |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1289 order = binary.LittleEndian |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1290 case endian == wkb.XDR: |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1291 order = binary.BigEndian |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1292 default: |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1293 return fmt.Errorf("unknown byte order %x", endian) |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1294 } |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1295 |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1296 err = binary.Read(r, order, &geomType) |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1297 |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1298 switch { |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1299 case err != nil: |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1300 return err |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1301 case geomType != wkb.PointZ: |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1302 return fmt.Errorf("unknown geometry type %x", geomType) |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1303 } |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1304 |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1305 var x, y, z uint64 |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1306 if err = binary.Read(r, order, &x); err != nil { |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1307 return err |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1308 } |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1309 if err = binary.Read(r, order, &y); err != nil { |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1310 return err |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1311 } |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1312 if err = binary.Read(r, order, &z); err != nil { |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1313 return err |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1314 } |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1315 points[i] = Vertex{ |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1316 X: math.Float64frombits(x), |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1317 Y: math.Float64frombits(y), |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1318 Z: math.Float64frombits(z), |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1319 } |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1320 } |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1321 |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1322 *mpz = points |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1323 |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1324 return nil |
45d51a49f191
SR import: Use own triangulation and clipping when importing sounding results.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
2512
diff
changeset
|
1325 } |