1 | // This file is a part of Framsticks SDK. http://www.framsticks.com/ |
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2 | // Copyright (C) 1999-2015 Maciej Komosinski and Szymon Ulatowski. |
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3 | // See LICENSE.txt for details. |
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4 | |
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5 | #include "geometryutils.h" |
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6 | |
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7 | #include <math.h> |
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8 | |
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9 | double GeometryUtils::pointPosition(const int pointIndex, const int numberOfPoints) |
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10 | { |
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11 | return pointIndex / (numberOfPoints-1.0); |
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12 | } |
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13 | |
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14 | double GeometryUtils::pointOnAxis(const double scale, const double position) |
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15 | { |
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16 | return (position-0.5) * scale; |
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17 | } |
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18 | |
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19 | double GeometryUtils::pointOnAxis(const double scale, const int pointIndex, const int numberOfPoints) |
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20 | { |
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21 | return pointOnAxis(scale, pointPosition(pointIndex, numberOfPoints)); |
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22 | } |
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23 | |
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24 | double GeometryUtils::combination(const double value1, const double value2, const double position) |
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25 | { |
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26 | return value1 + position * (value2-value1); |
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27 | } |
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28 | |
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29 | double GeometryUtils::combination(const double value1, const double value2, const int pointIndex, const int numberOfPoints) |
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30 | { |
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31 | return combination(value1, value2, pointPosition(pointIndex, numberOfPoints)); |
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32 | } |
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33 | |
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34 | bool GeometryUtils::isPointInsideModelExcludingPart(const Pt3D &point, const Model *model, const int excludedPartIndex) |
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35 | { |
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36 | for (int i = 0; i < excludedPartIndex; i++) |
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37 | { |
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38 | if (isPointInsidePart(point, model->getPart(i))) |
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39 | { |
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40 | return true; |
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41 | } |
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42 | } |
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43 | |
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44 | for (int i = excludedPartIndex+1; i < model->getPartCount(); i++) |
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45 | { |
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46 | if (isPointStrictlyInsidePart(point, model->getPart(i))) |
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47 | { |
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48 | return true; |
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49 | } |
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50 | } |
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51 | |
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52 | return false; |
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53 | } |
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54 | |
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55 | bool GeometryUtils::isPointInsideModel(const Pt3D &point, const Model &model) |
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56 | { |
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57 | for (int i = 0; i < model.getPartCount(); i++) |
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58 | { |
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59 | if (isPointInsidePart(point, model.getPart(i))) |
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60 | { |
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61 | return true; |
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62 | } |
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63 | } |
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64 | |
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65 | return false; |
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66 | } |
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67 | |
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68 | bool GeometryUtils::isPointInsidePart(const Pt3D &point, const Part *part) |
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69 | { |
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70 | switch (part->shape) |
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71 | { |
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72 | case Part::SHAPE_ELLIPSOID: |
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73 | return isPointInsideEllipsoid(point, part); |
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74 | break; |
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75 | |
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76 | case Part::SHAPE_CUBOID: |
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77 | return isPointInsideCuboid(point, part); |
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78 | break; |
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79 | |
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80 | case Part::SHAPE_CYLINDER: |
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81 | return isPointInsideCylinder(point, part); |
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82 | break; |
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83 | } |
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84 | FMprintf("GeometryUtils", "isPointInsidePart", FMLV_ERROR, "Part shape=%d not supported", part->shape); |
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85 | return false; |
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86 | } |
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87 | |
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88 | bool GeometryUtils::isPointStrictlyInsidePart(const Pt3D &point, const Part *part) |
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89 | { |
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90 | switch (part->shape) |
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91 | { |
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92 | case Part::SHAPE_ELLIPSOID: |
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93 | return isPointStrictlyInsideEllipsoid(point, part); |
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94 | break; |
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95 | |
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96 | case Part::SHAPE_CUBOID: |
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97 | return isPointStrictlyInsideCuboid(point, part); |
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98 | break; |
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99 | |
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100 | case Part::SHAPE_CYLINDER: |
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101 | return isPointStrictlyInsideCylinder(point, part); |
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102 | break; |
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103 | } |
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104 | FMprintf("GeometryUtils", "isPointStrictlyInsidePart", FMLV_ERROR, "Part shape=%d not supported", part->shape); |
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105 | return false; |
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106 | } |
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107 | |
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108 | bool GeometryUtils::isPointInsideEllipsoid(const Pt3D &point, const Part *part) |
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109 | { |
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110 | Pt3D moved = point - part->p; |
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111 | Pt3D rotated; |
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112 | part->o.revTransform(rotated, moved); |
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113 | |
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114 | double r |
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115 | = (pow(rotated.x, 2.0) / pow(part->scale.x, 2.0)) |
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116 | + (pow(rotated.y, 2.0) / pow(part->scale.y, 2.0)) |
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117 | + (pow(rotated.z, 2.0) / pow(part->scale.z, 2.0)); |
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118 | |
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119 | return r <= 1.0; |
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120 | } |
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121 | |
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122 | bool GeometryUtils::isPointStrictlyInsideEllipsoid(const Pt3D &point, const Part *part) |
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123 | { |
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124 | Pt3D moved = point - part->p; |
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125 | Pt3D rotated; |
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126 | part->o.revTransform(rotated, moved); |
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127 | |
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128 | double r |
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129 | = (pow(rotated.x, 2.0) / pow(part->scale.x, 2.0)) |
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130 | + (pow(rotated.y, 2.0) / pow(part->scale.y, 2.0)) |
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131 | + (pow(rotated.z, 2.0) / pow(part->scale.z, 2.0)); |
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132 | |
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133 | return r < 1.0; |
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134 | } |
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135 | |
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136 | bool GeometryUtils::isPointInsideCuboid(const Pt3D &point, const Part *part) |
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137 | { |
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138 | Pt3D moved = point - part->p; |
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139 | Pt3D rotated; |
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140 | part->o.revTransform(rotated, moved); |
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141 | |
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142 | return (fabs(rotated.x) <= part->scale.x) |
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143 | && (fabs(rotated.y) <= part->scale.y) |
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144 | && (fabs(rotated.z) <= part->scale.z); |
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145 | } |
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146 | |
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147 | bool GeometryUtils::isPointStrictlyInsideCuboid(const Pt3D &point, const Part *part) |
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148 | { |
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149 | Pt3D moved = point - part->p; |
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150 | Pt3D rotated; |
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151 | part->o.revTransform(rotated, moved); |
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152 | |
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153 | return (fabs(rotated.x) < part->scale.x) |
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154 | && (fabs(rotated.y) < part->scale.y) |
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155 | && (fabs(rotated.z) < part->scale.z); |
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156 | } |
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157 | |
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158 | bool GeometryUtils::isPointInsideCylinder(const Pt3D &point, const Part *part) |
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159 | { |
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160 | Pt3D moved = point - part->p; |
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161 | Pt3D rotated; |
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162 | part->o.revTransform(rotated, moved); |
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163 | |
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164 | double r |
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165 | = (pow(rotated.y, 2.0) / pow(part->scale.y, 2.0)) |
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166 | + (pow(rotated.z, 2.0) / pow(part->scale.z, 2.0)); |
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167 | |
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168 | return (fabs(rotated.x) <= part->scale.x) && (r <= 1.0); |
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169 | } |
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170 | |
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171 | bool GeometryUtils::isPointStrictlyInsideCylinder(const Pt3D &point, const Part *part) |
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172 | { |
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173 | Pt3D moved = point - part->p; |
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174 | Pt3D rotated; |
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175 | part->o.revTransform(rotated, moved); |
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176 | |
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177 | double r |
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178 | = (pow(rotated.y, 2.0) / pow(part->scale.y, 2.0)) |
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179 | + (pow(rotated.z, 2.0) / pow(part->scale.z, 2.0)); |
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180 | |
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181 | return (fabs(rotated.x) < part->scale.x) && (r < 1.0); |
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182 | } |
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183 | |
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184 | void GeometryUtils::findSizesAndAxesOfPointsGroup(SListTempl<Pt3D> &points, Pt3D &sizes, |
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185 | Orient &axes) |
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186 | { |
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187 | findSizeAndAxisOfPointsGroup(points, sizes.x, axes.x); |
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188 | orthographicProjectionToPlane(points, axes.x); |
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189 | findSizeAndAxisOfPointsGroup(points, sizes.y, axes.y); |
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190 | orthographicProjectionToPlane(points, axes.y); |
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191 | |
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192 | Pt3D minimal(points.get(0)), maximal(points.get(0)); |
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193 | |
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194 | for (int i = 1; i < points.size(); i++) |
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195 | { |
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196 | minimal.getMin(points.get(i)); |
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197 | maximal.getMax(points.get(i)); |
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198 | } |
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199 | |
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200 | sizes.z = minimal.distanceTo(maximal); |
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201 | axes.z.vectorProduct(axes.x, axes.y); |
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202 | } |
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203 | |
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204 | void GeometryUtils::findSizeAndAxisOfPointsGroup(const SListTempl<Pt3D> &points, double &size, |
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205 | Pt3D &axis) |
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206 | { |
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207 | int index1, index2; |
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208 | size = findTwoFurthestPoints(points, index1, index2); |
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209 | createAxisFromTwoPoints(axis, points.get(index1), points.get(index2)); |
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210 | } |
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211 | |
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212 | double GeometryUtils::findTwoFurthestPoints(const SListTempl<Pt3D> &points, int &index1, |
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213 | int &index2) |
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214 | { |
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215 | double distance = 0; |
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216 | index1 = index2 = 0; |
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217 | |
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218 | for (int i = 0; i < points.size()-1; i++) |
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219 | { |
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220 | Pt3D p1 = points.get(i); |
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221 | |
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222 | for (int j = i+1; j < points.size(); j++) |
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223 | { |
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224 | Pt3D p2 = points.get(j); |
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225 | double d = p1.distanceTo(p2); |
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226 | |
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227 | if (d > distance) |
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228 | { |
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229 | distance = d; |
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230 | index1 = i; |
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231 | index2 = j; |
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232 | } |
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233 | } |
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234 | } |
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235 | |
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236 | return distance; |
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237 | } |
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238 | |
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239 | void GeometryUtils::createAxisFromTwoPoints(Pt3D &axis, const Pt3D &point1, const Pt3D &point2) |
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240 | { |
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241 | Pt3D vector = point2 - point1; |
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242 | vector.normalize(); |
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243 | |
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244 | axis.x = vector.x; |
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245 | axis.y = vector.y; |
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246 | axis.z = vector.z; |
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247 | } |
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248 | |
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249 | void GeometryUtils::orthographicProjectionToPlane(SListTempl<Pt3D> &points, |
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250 | const Pt3D &planeNormalVector) |
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251 | { |
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252 | for (int i = 0; i < points.size(); i++) |
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253 | { |
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254 | Pt3D &point = points.get(i); |
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255 | |
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256 | double distance = pointDistanceToPlane(point, planeNormalVector); |
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257 | |
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258 | point.x -= planeNormalVector.x * distance; |
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259 | point.y -= planeNormalVector.y * distance; |
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260 | point.z -= planeNormalVector.z * distance; |
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261 | } |
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262 | } |
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263 | |
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264 | double GeometryUtils::pointDistanceToPlane(const Pt3D &point, const Pt3D &planeNormalVector) |
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265 | { |
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266 | return planeNormalVector.x*point.x + planeNormalVector.y*point.y + planeNormalVector.z*point.z; |
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267 | } |
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268 | |
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269 | void GeometryUtils::getRectangleApicesFromCuboid(const Part *part, const CuboidFaces::Face face, Pt3D &apex1, Pt3D &apex2, Pt3D &apex3, Pt3D &apex4) |
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270 | { |
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271 | Pt3D temp1(part->scale), temp2(part->scale), temp3(part->scale), temp4(part->scale); |
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272 | |
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273 | if (CuboidFaces::isX(face)) |
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274 | { |
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275 | temp2.z *= -1; |
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276 | temp3.y *= -1; |
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277 | temp4.z *= -1; |
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278 | temp4.y *= -1; |
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279 | } |
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280 | else if (CuboidFaces::isY(face)) |
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281 | { |
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282 | temp2.x *= -1; |
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283 | temp3.z *= -1; |
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284 | temp4.x *= -1; |
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285 | temp4.z *= -1; |
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286 | } |
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287 | else if (CuboidFaces::isZ(face)) |
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288 | { |
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289 | temp2.y *= -1; |
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290 | temp3.x *= -1; |
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291 | temp4.y *= -1; |
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292 | temp4.x *= -1; |
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293 | } |
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294 | |
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295 | if (CuboidFaces::isNegative(face)) |
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296 | { |
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297 | temp1 *= -1; |
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298 | temp2 *= -1; |
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299 | temp3 *= -1; |
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300 | temp4 *= -1; |
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301 | } |
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302 | |
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303 | part->o.transform(apex1, temp1); |
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304 | part->o.transform(apex2, temp2); |
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305 | part->o.transform(apex3, temp3); |
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306 | part->o.transform(apex4, temp4); |
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307 | |
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308 | apex1 += part->p; |
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309 | apex2 += part->p; |
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310 | apex3 += part->p; |
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311 | apex4 += part->p; |
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312 | } |
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313 | |
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314 | void GeometryUtils::getRectangleApices(const double width, const double height, const Pt3D &position, const Orient &orient, Pt3D &apex1, Pt3D &apex2, Pt3D &apex3, Pt3D &apex4) |
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315 | { |
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316 | Pt3D temp1(0.0, +width, +height); |
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317 | Pt3D temp2(0.0, +width, -height); |
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318 | Pt3D temp3(0.0, -width, +height); |
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319 | Pt3D temp4(0.0, -width, -height); |
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320 | |
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321 | orient.transform(apex1, temp1); |
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322 | orient.transform(apex2, temp2); |
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323 | orient.transform(apex3, temp3); |
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324 | orient.transform(apex4, temp4); |
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325 | |
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326 | apex1 += position; |
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327 | apex2 += position; |
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328 | apex3 += position; |
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329 | apex4 += position; |
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330 | } |
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331 | |
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332 | void GeometryUtils::getNextEllipseSegmentationPoint(const double d, const double a, const double b, double &x, double &y) |
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333 | { |
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334 | x += d / sqrt(1.0 + (b*b * x*x) / (a*a * (a*a - x*x))); |
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335 | y = b * sqrt(1.0 - (x*x) / (a*a)); |
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336 | } |
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337 | |
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338 | double GeometryUtils::ellipsoidArea(const Pt3D &sizes) |
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339 | { |
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340 | return ellipsoidArea(sizes.x, sizes.y, sizes.z); |
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341 | } |
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342 | |
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343 | double GeometryUtils::ellipsoidArea(const double a, const double b, const double c) |
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344 | { |
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345 | double p = 1.6075; |
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346 | double ap = pow(a, p); |
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347 | double bp = pow(b, p); |
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348 | double cp = pow(c, p); |
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349 | return 4*M_PI * pow((ap*bp + bp*cp + cp*ap) / 3.0, 1.0 / p); |
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350 | } |
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351 | |
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352 | double GeometryUtils::ellipsePerimeter(const double a, const double b) |
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353 | { |
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354 | return M_PI * ((3 * (a+b)) - sqrt((3*a + b) * (a + 3*b))); |
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355 | } |
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