1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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4 | // * * |
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5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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7 | // * conditions of the Geant4 Software License, included in the file * |
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8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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9 | // * include a list of copyright holders. * |
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10 | // * * |
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11 | // * Neither the authors of this software system, nor their employing * |
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12 | // * institutes,nor the agencies providing financial support for this * |
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13 | // * work make any representation or warranty, express or implied, * |
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14 | // * regarding this software system or assume any liability for its * |
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15 | // * use. Please see the license in the file LICENSE and URL above * |
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16 | // * for the full disclaimer and the limitation of liability. * |
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17 | // * * |
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18 | // * This code implementation is the result of the scientific and * |
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19 | // * technical work of the GEANT4 collaboration. * |
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20 | // * By using, copying, modifying or distributing the software (or * |
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21 | // * any work based on the software) you agree to acknowledge its * |
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22 | // * use in resulting scientific publications, and indicate your * |
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23 | // * acceptance of all terms of the Geant4 Software license. * |
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24 | // ******************************************************************** |
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25 | // |
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26 | // |
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27 | // |
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28 | // $Id: SoTrd.cc,v 1.8 2006/06/29 21:23:05 gunter Exp $ |
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29 | // GEANT4 tag $Name: $ |
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30 | // |
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31 | /*-----------------------------HEPVis---------------------------------------*/ |
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32 | /* */ |
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33 | /* Node: SoTrd */ |
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34 | /* Description: Represents the G4Trd Geant Geometry entity */ |
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35 | /* Author: Joe Boudreau Nov 11 1996 */ |
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36 | /* */ |
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37 | /*--------------------------------------------------------------------------*/ |
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38 | |
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39 | #ifdef G4VIS_BUILD_OI_DRIVER |
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40 | |
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41 | #include <assert.h> |
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42 | #include <cmath> |
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43 | |
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44 | #include <Inventor/SbBox.h> |
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45 | #include <Inventor/actions/SoAction.h> |
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46 | #include <Inventor/fields/SoSFFloat.h> |
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47 | #include <Inventor/misc/SoChildList.h> |
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48 | #include <Inventor/nodes/SoSeparator.h> |
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49 | #include <Inventor/nodes/SoIndexedFaceSet.h> |
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50 | #include <Inventor/nodes/SoNormal.h> |
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51 | #include <Inventor/nodes/SoCoordinate3.h> |
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52 | #include <Inventor/nodes/SoNormalBinding.h> |
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53 | #include <Inventor/SoPrimitiveVertex.h> |
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54 | #include <Inventor/elements/SoTextureCoordinateElement.h> |
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55 | |
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56 | #include "HEPVis/SbMath.h" |
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57 | #include "HEPVis/nodes/SoTrd.h" |
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58 | |
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59 | // This statement is required |
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60 | SO_NODE_SOURCE(SoTrd) |
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61 | |
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62 | // initClass |
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63 | void SoTrd::initClass(){ |
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64 | SO_NODE_INIT_CLASS(SoTrd,SoShape,"Shape"); |
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65 | } |
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66 | // Constructor |
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67 | SoTrd::SoTrd() { |
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68 | // This statement is required |
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69 | SO_NODE_CONSTRUCTOR(SoTrd); |
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70 | // Data fields are initialized like this: |
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71 | SO_NODE_ADD_FIELD(fDx1,(1.0)); |
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72 | SO_NODE_ADD_FIELD(fDx2,(1.0)); |
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73 | SO_NODE_ADD_FIELD(fDy1,(1.0)); |
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74 | SO_NODE_ADD_FIELD(fDy2,(1.0)); |
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75 | SO_NODE_ADD_FIELD(fDz,(1.0)); |
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76 | SO_NODE_ADD_FIELD(alternateRep,(NULL)); |
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77 | children = new SoChildList(this); |
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78 | } |
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79 | // Destructor |
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80 | SoTrd::~SoTrd() { |
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81 | delete children; |
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82 | } |
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83 | // generatePrimitives |
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84 | void SoTrd::generatePrimitives(SoAction *action) { |
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85 | // This variable is used to store each vertex |
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86 | SoPrimitiveVertex pv; |
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87 | |
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88 | // Access the stat from the action |
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89 | SoState *state = action->getState(); |
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90 | |
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91 | // See if we have to use a texture coordinate function, |
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92 | // rather than generating explicit texture coordinates. |
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93 | SbBool useTexFunction= |
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94 | (SoTextureCoordinateElement::getType(state) == |
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95 | SoTextureCoordinateElement::FUNCTION); |
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96 | |
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97 | // If we need to generate texture coordinates with a function, |
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98 | // we'll need an SoGLTextureCoordinateElement. Otherwise, we'll |
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99 | // set up the coordinates directly. |
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100 | const SoTextureCoordinateElement *tce = NULL; |
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101 | SbVec4f texCoord; |
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102 | if (useTexFunction) { |
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103 | tce = SoTextureCoordinateElement::getInstance(state); |
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104 | } |
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105 | else { |
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106 | texCoord[2] = 0.0; |
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107 | texCoord[3] = 1.0; |
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108 | } |
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109 | SbVec3f point, normal; |
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110 | |
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111 | |
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112 | ////////////////////////////////////////// |
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113 | //---------------------------------------- |
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114 | #define GEN_VERTEX(pv,x,y,z,s,t,nx,ny,nz) \ |
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115 | point.setValue(x,y,z); \ |
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116 | normal.setValue(nx,ny,nz); \ |
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117 | if (useTexFunction) { \ |
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118 | texCoord=tce->get(point,normal); \ |
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119 | } \ |
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120 | else { \ |
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121 | texCoord[0]=s; \ |
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122 | texCoord[1]=t; \ |
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123 | } \ |
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124 | pv.setPoint(point); \ |
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125 | pv.setNormal(normal); \ |
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126 | pv.setTextureCoords(texCoord); \ |
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127 | shapeVertex(&pv); |
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128 | //---------------------------------------- |
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129 | ////////////////////////////////////////// |
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130 | |
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131 | const int NPOINTS=8, NFACES=6, NINDICES = NFACES*5; |
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132 | int indices[NINDICES] = {3,2,1,0, SO_END_FACE_INDEX, //z back. |
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133 | 4,5,6,7, SO_END_FACE_INDEX, //z front. |
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134 | 0,1,5,4, SO_END_FACE_INDEX, //y up. |
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135 | 1,2,6,5, SO_END_FACE_INDEX, //x left. |
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136 | 2,3,7,6, SO_END_FACE_INDEX, //y down. |
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137 | 3,0,4,7, SO_END_FACE_INDEX}; //x right. |
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138 | |
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139 | |
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140 | // points for the eight vertices |
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141 | float points[NPOINTS][3]; |
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142 | points[0][0] = fDx1.getValue(); |
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143 | points[0][1] = fDy1.getValue(); |
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144 | points[0][2] = -fDz.getValue(); |
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145 | |
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146 | points[1][0] = -fDx1.getValue(); |
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147 | points[1][1] = fDy1.getValue(); |
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148 | points[1][2] = -fDz.getValue(); |
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149 | |
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150 | points[2][0] = -fDx1.getValue(); |
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151 | points[2][1] = -fDy1.getValue(); |
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152 | points[2][2] = -fDz.getValue(); |
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153 | |
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154 | points[3][0] = fDx1.getValue(); |
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155 | points[3][1] = -fDy1.getValue(); |
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156 | points[3][2] = -fDz.getValue(); |
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157 | |
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158 | points[4][0] = fDx2.getValue(); |
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159 | points[4][1] = fDy2.getValue(); |
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160 | points[4][2] = fDz.getValue(); |
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161 | |
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162 | points[5][0] = -fDx2.getValue(); |
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163 | points[5][1] = fDy2.getValue(); |
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164 | points[5][2] = fDz.getValue(); |
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165 | |
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166 | points[6][0] = -fDx2.getValue(); |
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167 | points[6][1] = -fDy2.getValue(); |
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168 | points[6][2] = fDz.getValue(); |
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169 | |
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170 | points[7][0] = fDx2.getValue(); |
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171 | points[7][1] = -fDy2.getValue(); |
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172 | points[7][2] = fDz.getValue(); |
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173 | |
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174 | float t1 = FATAN((fDx2.getValue()-fDx1.getValue())/(2*fDz.getValue())); |
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175 | float t2 = FATAN((fDy2.getValue()-fDy1.getValue())/(2*fDz.getValue())); |
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176 | float st1 = FSIN(t1); |
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177 | float st2 = FSIN(t2); |
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178 | float ct1 = FCOS(t1); |
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179 | float ct2 = FCOS(t2); |
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180 | |
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181 | float normals[NFACES][3]; |
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182 | //z back. |
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183 | normals[0][0] = 0 ; normals[0][1] = 0; normals [0][2] = -1; |
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184 | //z front. |
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185 | normals[1][0] = 0 ; normals[1][1] = 0; normals [1][2] = 1; |
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186 | //y up. |
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187 | normals[2][0] = 0 ; normals[2][1] = ct2; normals [2][2] = -st2; |
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188 | //x left. |
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189 | normals[3][0] = -ct1; normals[3][1] = 0; normals [3][2] = -st1; |
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190 | //y down. |
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191 | normals[4][0] = 0 ; normals[4][1] = -ct2; normals [4][2] = -st2; |
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192 | //x right. |
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193 | normals[5][0] = ct1; normals[5][1] = 0; normals [5][2] = -st1; |
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194 | |
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195 | float x,y,z; |
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196 | int index; |
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197 | for (int nf=0;nf<NFACES;nf++) { |
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198 | beginShape(action,TRIANGLE_FAN); |
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199 | index = indices[nf * 5]; |
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200 | x = points[index][0]; |
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201 | y = points[index][1]; |
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202 | z = points[index][2]; |
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203 | GEN_VERTEX(pv,x,y,z,0.0,0.0,normals[nf][0],normals[nf][1],normals[nf][2]); |
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204 | index = indices[nf * 5 + 1]; |
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205 | x = points[index][0]; |
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206 | y = points[index][1]; |
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207 | z = points[index][2]; |
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208 | GEN_VERTEX(pv,x,y,z,0.0,0.0,normals[nf][0],normals[nf][1],normals[nf][2]); |
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209 | index = indices[nf * 5 + 2]; |
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210 | x = points[index][0]; |
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211 | y = points[index][1]; |
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212 | z = points[index][2]; |
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213 | GEN_VERTEX(pv,x,y,z,0.0,0.0,normals[nf][0],normals[nf][1],normals[nf][2]); |
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214 | index = indices[nf * 5 + 3]; |
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215 | x = points[index][0]; |
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216 | y = points[index][1]; |
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217 | z = points[index][2]; |
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218 | GEN_VERTEX(pv,x,y,z,0.0,0.0,normals[nf][0],normals[nf][1],normals[nf][2]); |
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219 | endShape(); |
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220 | } |
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221 | } |
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222 | |
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223 | // getChildren |
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224 | SoChildList *SoTrd::getChildren() const { |
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225 | return children; |
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226 | } |
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227 | |
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228 | |
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229 | // computeBBox |
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230 | void SoTrd::computeBBox(SoAction *, SbBox3f &box, SbVec3f ¢er ){ |
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231 | float fDx= fDx1.getValue(),fDy=fDy1.getValue(); |
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232 | |
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233 | if (fDx2.getValue() > fDx) fDx = fDx2.getValue(); |
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234 | if (fDy2.getValue() > fDy) fDy = fDy2.getValue(); |
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235 | |
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236 | SbVec3f vmin(-fDx,-fDy,-fDz.getValue()), |
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237 | vmax( fDx, fDy, fDz.getValue()); |
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238 | |
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239 | center.setValue(0,0,0); |
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240 | box.setBounds(vmin,vmax); |
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241 | } |
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242 | |
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243 | |
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244 | |
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245 | |
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246 | // updateChildren |
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247 | void SoTrd::updateChildren() { |
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248 | |
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249 | |
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250 | // Redraw the G4Trd.... |
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251 | |
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252 | assert(children->getLength()==1); |
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253 | SoSeparator *sep = (SoSeparator *) ( *children)[0]; |
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254 | SoCoordinate3 *theCoordinates = (SoCoordinate3 *) ( sep->getChild(0)); |
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255 | SoNormal *theNormals = (SoNormal *) ( sep->getChild(1)); |
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256 | SoNormalBinding *theNormalBinding = (SoNormalBinding *) ( sep->getChild(2)); |
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257 | SoIndexedFaceSet *theFaceSet = (SoIndexedFaceSet *) ( sep->getChild(3)); |
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258 | |
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259 | const int NPOINTS=8, NFACES=6, NINDICES = NFACES*5; |
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260 | float points[NPOINTS][3]; |
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261 | float normals[NFACES][3]= {{0,0,-1}, {0,0,1}, {0,1,0}, {-1, 0, 0}, {0, -1, 0}, {1,0,0}}; |
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262 | |
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263 | // Indices for the eight faces |
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264 | #ifdef INVENTOR2_0 |
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265 | static long |
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266 | #else |
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267 | static int32_t |
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268 | #endif |
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269 | indices[NINDICES] = {3,2,1,0, SO_END_FACE_INDEX, // bottom |
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270 | 4,5,6,7, SO_END_FACE_INDEX, // top |
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271 | 0,1,5,4, SO_END_FACE_INDEX, |
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272 | 1,2,6,5, SO_END_FACE_INDEX, |
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273 | 2,3,7,6, SO_END_FACE_INDEX, |
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274 | 3,0,4,7, SO_END_FACE_INDEX}; |
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275 | |
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276 | |
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277 | // points for the eight vertices |
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278 | points[0][0] = fDx1.getValue(); points[0][1] = fDy1.getValue(); points[0][2] = -fDz.getValue(); |
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279 | points[1][0] = -fDx1.getValue(); points[1][1] = fDy1.getValue(); points[1][2] = -fDz.getValue(); |
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280 | points[2][0] = -fDx1.getValue(); points[2][1] = -fDy1.getValue(); points[2][2] = -fDz.getValue(); |
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281 | points[3][0] = fDx1.getValue(); points[3][1] = -fDy1.getValue(); points[3][2] = -fDz.getValue(); |
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282 | points[4][0] = fDx2.getValue(); points[4][1] = fDy2.getValue(); points[4][2] = fDz.getValue(); |
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283 | points[5][0] = -fDx2.getValue(); points[5][1] = fDy2.getValue(); points[5][2] = fDz.getValue(); |
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284 | points[6][0] = -fDx2.getValue(); points[6][1] = -fDy2.getValue(); points[6][2] = fDz.getValue(); |
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285 | points[7][0] = fDx2.getValue(); points[7][1] = -fDy2.getValue(); points[7][2] = fDz.getValue(); |
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286 | |
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287 | float t1 = FATAN((fDx2.getValue()-fDx1.getValue())/(2*fDz.getValue())); |
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288 | float t2 = FATAN((fDy2.getValue()-fDy1.getValue())/(2*fDz.getValue())); |
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289 | float st1 = FSIN(t1); |
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290 | float st2 = FSIN(t2); |
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291 | float ct1 = FCOS(t1); |
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292 | float ct2 = FCOS(t2); |
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293 | |
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294 | normals[0][0] = 0 ; normals[0][1] = 0; normals [0][2] = -1; |
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295 | normals[1][0] = 0 ; normals[1][1] = 0; normals [1][2] = 1; |
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296 | normals[2][0] = 0 ; normals[2][1] = ct2; normals [2][2] = -st2; |
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297 | normals[3][0] = -ct1; normals[3][1] = 0; normals [3][2] = -st1; |
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298 | normals[4][0] = 0 ; normals[4][1] = -ct2; normals [4][2] = -st2; |
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299 | normals[5][0] = ct1; normals[5][1] = 0; normals [5][2] = -st1; |
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300 | |
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301 | for (int np=0;np<NPOINTS;np++) theCoordinates->point.set1Value(np,points[np][0],points[np][1],points[np][2]); |
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302 | theFaceSet->coordIndex.setValues(0,NINDICES,indices); |
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303 | for (int nf=0;nf<NFACES;nf++) theNormals->vector.set1Value(nf,normals[nf][0],normals[nf][1],normals[nf][2]); |
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304 | theNormalBinding->value=SoNormalBinding::PER_FACE; |
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305 | } |
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306 | |
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307 | // generateChildren |
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308 | void SoTrd::generateChildren() { |
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309 | |
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310 | // This routines creates one SoSeparator, one SoCoordinate3, and |
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311 | // one SoLineSet, and puts it in the child list. This is done only |
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312 | // once, whereas redrawing the position of the coordinates occurs each |
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313 | // time an update is necessary, in the updateChildren routine. |
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314 | |
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315 | assert(children->getLength() ==0); |
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316 | SoSeparator *sep = new SoSeparator(); |
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317 | SoCoordinate3 *theCoordinates = new SoCoordinate3(); |
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318 | SoNormal *theNormals = new SoNormal(); |
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319 | SoNormalBinding *theNormalBinding = new SoNormalBinding(); |
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320 | SoIndexedFaceSet *theFaceSet = new SoIndexedFaceSet(); |
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321 | // |
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322 | // This line costs some in render quality! but gives speed. |
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323 | // |
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324 | sep->addChild(theCoordinates); |
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325 | sep->addChild(theNormals); |
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326 | sep->addChild(theNormalBinding); |
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327 | sep->addChild(theFaceSet); |
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328 | children->append(sep); |
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329 | } |
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330 | |
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331 | // generateAlternateRep |
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332 | void SoTrd::generateAlternateRep() { |
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333 | |
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334 | // This routine sets the alternate representation to the child |
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335 | // list of this mode. |
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336 | |
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337 | if (children->getLength() == 0) generateChildren(); |
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338 | updateChildren(); |
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339 | alternateRep.setValue((SoSeparator *) ( *children)[0]); |
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340 | } |
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341 | |
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342 | // clearAlternateRep |
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343 | void SoTrd::clearAlternateRep() { |
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344 | alternateRep.setValue(NULL); |
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345 | } |
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346 | |
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347 | #endif |
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