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: SoCons.cc,v 1.8 2006/06/29 21:22:38 gunter Exp $ |
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29 | // GEANT4 tag $Name: geant4-09-04-beta-01 $ |
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30 | // |
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31 | /*-----------------------------HEPVis---------------------------------------*/ |
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32 | /* */ |
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33 | /* Node: SoCons */ |
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34 | /* Description: Represents the G4Cons 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 | // this : |
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42 | #include "HEPVis/nodes/SoCons.h" |
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43 | |
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44 | #include <assert.h> |
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45 | #include <cmath> |
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46 | #include <Inventor/SbBox.h> |
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47 | #include <Inventor/actions/SoAction.h> |
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48 | #include <Inventor/fields/SoSFFloat.h> |
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49 | #include <Inventor/misc/SoChildList.h> |
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50 | #include <Inventor/nodes/SoSeparator.h> |
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51 | #include <Inventor/nodes/SoIndexedFaceSet.h> |
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52 | #include <Inventor/nodes/SoNormal.h> |
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53 | #include <Inventor/nodes/SoCoordinate3.h> |
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54 | #include <Inventor/nodes/SoNormalBinding.h> |
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55 | #include <Inventor/SoPrimitiveVertex.h> |
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56 | #include <Inventor/elements/SoTextureCoordinateElement.h> |
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57 | |
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58 | #include "HEPVis/SbMath.h" |
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59 | |
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60 | // This statement is required |
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61 | SO_NODE_SOURCE(SoCons) |
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62 | |
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63 | // Constructor |
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64 | SoCons::SoCons() { |
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65 | // This statement is required |
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66 | SO_NODE_CONSTRUCTOR(SoCons); |
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67 | |
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68 | // Data fields are initialized like this: |
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69 | SO_NODE_ADD_FIELD(fRmin1, (0.0)); |
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70 | SO_NODE_ADD_FIELD(fRmin2, (0.0)); |
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71 | SO_NODE_ADD_FIELD(fRmax1, (1.0)); |
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72 | SO_NODE_ADD_FIELD(fRmax2, (1.0)); |
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73 | SO_NODE_ADD_FIELD(fDz, (10.0)); |
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74 | SO_NODE_ADD_FIELD(fSPhi, (0.0)); |
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75 | SO_NODE_ADD_FIELD(fDPhi, ((float)(2*M_PI))); |
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76 | SO_NODE_ADD_FIELD(smoothDraw, (TRUE)); |
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77 | SO_NODE_ADD_FIELD(alternateRep, (NULL)); |
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78 | children = new SoChildList(this); |
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79 | } |
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80 | |
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81 | // Destructor |
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82 | SoCons::~SoCons() { |
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83 | delete children; |
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84 | } |
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85 | |
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86 | |
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87 | // initClass |
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88 | void SoCons::initClass(){ |
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89 | // This statement is required. |
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90 | SO_NODE_INIT_CLASS(SoCons,SoShape,"Shape"); |
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91 | } |
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92 | |
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93 | |
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94 | // generatePrimitives |
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95 | void SoCons::generatePrimitives(SoAction *action) { |
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96 | // This variable is used to store each vertex |
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97 | SoPrimitiveVertex pv; |
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98 | |
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99 | // Access the stat from the action |
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100 | SoState *state = action->getState(); |
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101 | |
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102 | // See if we have to use a texture coordinate function, |
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103 | // rather than generating explicit texture coordinates. |
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104 | SbBool useTexFunction= |
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105 | (SoTextureCoordinateElement::getType(state) == |
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106 | SoTextureCoordinateElement::FUNCTION); |
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107 | |
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108 | // If we need to generate texture coordinates with a function, |
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109 | // we'll need an SoGLTextureCoordinateElement. Otherwise, we'll |
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110 | // set up the coordinates directly. |
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111 | const SoTextureCoordinateElement *tce = NULL; |
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112 | SbVec4f texCoord; |
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113 | if (useTexFunction) { |
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114 | tce = SoTextureCoordinateElement::getInstance(state); |
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115 | } else { |
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116 | texCoord[2] = 0.0; |
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117 | texCoord[3] = 1.0; |
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118 | } |
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119 | SbVec3f point, normal; |
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120 | |
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121 | /////////////////////////////////////////////////////// |
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122 | //----------------------------------------------------- |
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123 | #define GEN_VERTEX(pv,x,y,z,s,t,nx,ny,nz) \ |
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124 | point.setValue((float)(x),(float)(y),(float)(z)); \ |
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125 | normal.setValue((float)(nx),(float)(ny),(float)(nz)); \ |
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126 | if (useTexFunction) { \ |
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127 | texCoord=tce->get(point,normal); \ |
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128 | } else { \ |
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129 | texCoord[0]=(float)(s); \ |
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130 | texCoord[1]=(float)(t); \ |
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131 | } \ |
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132 | pv.setPoint(point); \ |
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133 | pv.setNormal(normal); \ |
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134 | pv.setTextureCoords(texCoord); \ |
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135 | shapeVertex(&pv); |
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136 | //----------------------------------------------------- |
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137 | /////////////////////////////////////////////////////// |
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138 | |
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139 | |
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140 | int NPHI = (int)(2+22*std::fabs(fDPhi.getValue()/(2.0*M_PI))); |
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141 | double deltaPhi = fDPhi.getValue()/NPHI; |
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142 | double phi0 = fSPhi.getValue(); |
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143 | double phi1 = phi0 + fDPhi.getValue(); |
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144 | double rMax1 = fRmax1.getValue(); |
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145 | double rMin1 = fRmin1.getValue(); |
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146 | double rMax2 = fRmax2.getValue(); |
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147 | double rMin2 = fRmin2.getValue(); |
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148 | double zMax = fDz.getValue(); |
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149 | double zMin = -zMax; |
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150 | double cosPhi0 = std::cos(phi0); |
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151 | double sinPhi0 = std::sin(phi0); |
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152 | double cosPhi1 = std::cos(phi1); |
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153 | double sinPhi1 = std::sin(phi1); |
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154 | double cosDeltaPhi = std::cos(deltaPhi); |
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155 | double sinDeltaPhi = std::sin(deltaPhi); |
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156 | // |
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157 | // The outer surface! |
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158 | // |
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159 | beginShape(action,TRIANGLE_STRIP); |
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160 | int i; |
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161 | double sinPhi=sinPhi0; |
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162 | double cosPhi=cosPhi0; |
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163 | for (i = 0; i<=NPHI; i++) { |
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164 | GEN_VERTEX(pv,rMax2*cosPhi,rMax2*sinPhi,zMax,0.0,0.0,cosPhi,sinPhi,0); |
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165 | GEN_VERTEX(pv,rMax1*cosPhi,rMax1*sinPhi,zMin,1.0,1.0,cosPhi,sinPhi,0); |
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166 | inc(sinPhi, cosPhi, sinDeltaPhi, cosDeltaPhi); |
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167 | } |
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168 | endShape(); |
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169 | // |
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170 | // The inner surface! |
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171 | // |
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172 | beginShape(action,TRIANGLE_STRIP); |
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173 | sinPhi=sinPhi0; |
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174 | cosPhi=cosPhi0; |
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175 | for (i = 0; i<=NPHI; i++) { |
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176 | GEN_VERTEX(pv,rMin2*cosPhi,rMin2*sinPhi,zMax,0.0,0.0,-cosPhi,-sinPhi,0); |
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177 | GEN_VERTEX(pv,rMin1*cosPhi,rMin1*sinPhi,zMin,1.0,1.0,-cosPhi,-sinPhi,0); |
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178 | inc(sinPhi, cosPhi, sinDeltaPhi, cosDeltaPhi); |
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179 | } |
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180 | endShape(); |
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181 | if (std::fabs(deltaPhi)<2.0*M_PI) { |
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182 | // |
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183 | // The end |
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184 | // |
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185 | beginShape(action,TRIANGLE_STRIP); |
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186 | sinPhi=sinPhi0; |
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187 | cosPhi=cosPhi0; |
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188 | GEN_VERTEX(pv,rMax2*cosPhi,rMax2*sinPhi,zMax,0.0,0.0,sinPhi,-cosPhi,0); |
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189 | GEN_VERTEX(pv,rMax1*cosPhi,rMax1*sinPhi,zMin,1.0,1.0,sinPhi,-cosPhi,0); |
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190 | GEN_VERTEX(pv,rMin2*cosPhi,rMin2*sinPhi,zMax,1.0,0.0,sinPhi,-cosPhi,0); |
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191 | GEN_VERTEX(pv,rMin1*cosPhi,rMin1*sinPhi,zMin,0.0,1.0,sinPhi,-cosPhi,0); |
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192 | endShape(); |
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193 | // |
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194 | // The other end |
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195 | // |
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196 | beginShape(action,TRIANGLE_STRIP); |
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197 | sinPhi=sinPhi1; |
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198 | cosPhi=cosPhi1; |
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199 | GEN_VERTEX(pv,rMax2*cosPhi,rMax2*sinPhi, zMax,0.0,0.0,-sinPhi,+cosPhi,0); |
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200 | GEN_VERTEX(pv,rMax1*cosPhi,rMax1*sinPhi, zMin,1.0,1.0,-sinPhi,+cosPhi,0); |
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201 | GEN_VERTEX(pv,rMin2*cosPhi,rMin2*sinPhi, zMax,1.0,0.0,-sinPhi,+cosPhi,0); |
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202 | GEN_VERTEX(pv,rMin1*cosPhi,rMin1*sinPhi, zMin,0.0,1.0,-sinPhi,+cosPhi,0); |
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203 | endShape(); |
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204 | } |
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205 | |
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206 | // |
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207 | // The outer surface at z=+PDZ |
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208 | // |
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209 | beginShape(action,TRIANGLE_STRIP); |
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210 | sinPhi=sinPhi0; |
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211 | cosPhi=cosPhi0; |
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212 | for (i = 0; i<=NPHI; i++) { |
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213 | GEN_VERTEX(pv,rMin2*cosPhi,rMin2*sinPhi,zMax,0.0,0.0,0,0,1); |
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214 | GEN_VERTEX(pv,rMax2*cosPhi,rMax2*sinPhi,zMax,1.0,1.0,0,0,1); |
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215 | inc(sinPhi, cosPhi, sinDeltaPhi, cosDeltaPhi); |
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216 | } |
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217 | endShape(); |
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218 | // |
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219 | // The outer surface at z=-PDZ |
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220 | // |
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221 | beginShape(action,TRIANGLE_STRIP); |
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222 | sinPhi=sinPhi0; |
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223 | cosPhi=cosPhi0; |
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224 | for (i = 0; i<=NPHI; i++) { |
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225 | GEN_VERTEX(pv,rMin1*cosPhi,rMin1*sinPhi,zMin,0.0,0.0,0,0,-1); |
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226 | GEN_VERTEX(pv,rMax1*cosPhi,rMax1*sinPhi,zMin,1.0,1.0,0,0,-1); |
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227 | inc(sinPhi, cosPhi, sinDeltaPhi, cosDeltaPhi); |
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228 | } |
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229 | endShape(); |
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230 | |
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231 | } |
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232 | |
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233 | // getChildren |
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234 | SoChildList *SoCons::getChildren() const { |
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235 | return children; |
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236 | } |
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237 | |
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238 | |
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239 | // computeBBox |
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240 | void SoCons::computeBBox(SoAction *, SbBox3f &box, SbVec3f ¢er ){ |
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241 | float fRmax= fRmax1.getValue(); |
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242 | if (fRmax2.getValue() > fRmax) fRmax = fRmax2.getValue(); |
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243 | |
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244 | SbVec3f vmin(-fRmax,-fRmax,-fDz.getValue()), |
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245 | vmax( fRmax, fRmax, fDz.getValue()); |
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246 | center.setValue(0,0,0); |
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247 | box.setBounds(vmin,vmax); |
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248 | } |
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249 | |
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250 | |
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251 | |
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252 | |
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253 | // updateChildren |
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254 | void SoCons::updateChildren() { |
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255 | |
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256 | |
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257 | // Redraw the G4Cons.... |
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258 | |
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259 | assert(children->getLength()==1); |
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260 | SoSeparator *sep = (SoSeparator *) ( *children)[0]; |
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261 | SoCoordinate3 *theCoordinates = (SoCoordinate3 *) ( sep->getChild(0)); |
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262 | SoNormal *theNormals = (SoNormal *) ( sep->getChild(1)); |
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263 | SoNormalBinding *theNormalBinding = (SoNormalBinding *) ( sep->getChild(2)); |
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264 | SoIndexedFaceSet *theFaceSet = (SoIndexedFaceSet *) ( sep->getChild(3)); |
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265 | |
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266 | const int NPHI=24, NPOINTS=2*(2*NPHI+2), NFACES=4*NPHI+2, NINDICES = NFACES*5; |
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267 | float points[NPOINTS][3], normals[NFACES][3]; |
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268 | #ifdef INVENTOR2_0 |
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269 | static long indices[NINDICES]; |
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270 | #else |
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271 | static int32_t indices[NINDICES]; |
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272 | #endif |
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273 | static int init=0; |
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274 | double phi, pp, DeltaPhi; |
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275 | |
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276 | // Indices need to be generated once! This is here to keep it close to the point |
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277 | // generation, since otherwise it will be confusing. |
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278 | |
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279 | int i; |
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280 | if (!init) { |
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281 | init = 1; |
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282 | // Outer face |
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283 | for (i = 0; i< NPHI; i++) { |
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284 | // 0 1 3 2; |
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285 | indices[5*i+0] = 2*i+0; |
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286 | indices[5*i+1] = 2*i+1; |
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287 | indices[5*i+2] = 2*i+3; |
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288 | indices[5*i+3] = 2*i+2; |
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289 | indices[5*i+4] = SO_END_FACE_INDEX; |
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290 | } |
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291 | // the inner face |
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292 | for (i=0;i<NPHI;i++) { |
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293 | indices[5*1*NPHI + 5*i+0] = 2*NPHI+2 + 2*i+0; |
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294 | indices[5*1*NPHI + 5*i+1] = 2*NPHI+2 + 2*i+1; |
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295 | indices[5*1*NPHI + 5*i+2] = 2*NPHI+2 + 2*i+3; |
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296 | indices[5*1*NPHI + 5*i+3] = 2*NPHI+2 + 2*i+2; |
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297 | indices[5*1*NPHI + 5*i+4] = SO_END_FACE_INDEX; |
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298 | } |
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299 | // the top side |
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300 | for (i=0;i<NPHI;i++) { |
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301 | indices[5*2*NPHI + 5*i+0] = 2*i+0; |
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302 | indices[5*2*NPHI + 5*i+1] = 2*i+2; |
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303 | indices[5*2*NPHI + 5*i+2] = NPOINTS - (2*i+4); |
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304 | indices[5*2*NPHI + 5*i+3] = NPOINTS - (2*i+2); |
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305 | indices[5*2*NPHI + 5*i+4] = SO_END_FACE_INDEX; |
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306 | } |
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307 | // the bottom side |
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308 | for (i=0;i<NPHI;i++) { |
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309 | indices[5*3*NPHI + 5*i+0] = 2*i+1; |
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310 | indices[5*3*NPHI + 5*i+1] = NPOINTS - (2*i+1); |
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311 | indices[5*3*NPHI + 5*i+2] = NPOINTS - (2*i+3); |
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312 | indices[5*3*NPHI + 5*i+3] = 2*i+3; |
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313 | indices[5*3*NPHI + 5*i+4] = SO_END_FACE_INDEX; |
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314 | } |
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315 | // the odd side |
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316 | indices[5*4*NPHI +0] = 2*NPHI; |
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317 | indices[5*4*NPHI +1] = 2*NPHI+1; |
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318 | indices[5*4*NPHI +2] = 2*NPHI+3; |
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319 | indices[5*4*NPHI +3] = 2*NPHI+2; |
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320 | indices[5*4*NPHI +4] = SO_END_FACE_INDEX; |
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321 | // aother odd side |
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322 | indices[5*4*NPHI +5 +0] = 0; |
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323 | indices[5*4*NPHI +5 +1] = NPOINTS-2; |
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324 | indices[5*4*NPHI +5 +2] = NPOINTS-1; |
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325 | indices[5*4*NPHI +5 +3] = 1; |
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326 | indices[5*4*NPHI +5 +4] = SO_END_FACE_INDEX; |
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327 | } |
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328 | // Points need to be generated each time: |
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329 | // The outer surface |
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330 | DeltaPhi = fDPhi.getValue()/NPHI, phi = fSPhi.getValue(); |
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331 | float t,st,ct; |
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332 | t = FATAN((fRmax2.getValue()-fRmax1.getValue())/(2*fDz.getValue())); |
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333 | st = FSIN(t); |
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334 | ct = FCOS(t); |
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335 | for (i = 0; i<=NPHI; i++) { |
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336 | points[2*i+0][0] = fRmax2.getValue()*FCOS(phi); |
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337 | points[2*i+0][1] = fRmax2.getValue()*FSIN(phi); |
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338 | points[2*i+0][2] = +fDz.getValue(); |
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339 | points[2*i+1][0] = fRmax1.getValue()*FCOS(phi); |
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340 | points[2*i+1][1] = fRmax1.getValue()*FSIN(phi); |
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341 | points[2*i+1][2] = -fDz.getValue(); |
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342 | pp = phi+DeltaPhi/2.0; |
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343 | if (i!=NPHI) { |
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344 | normals[i][0] = ct * FCOS(pp); |
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345 | normals[i][1] = ct * FSIN(pp); |
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346 | normals[i][2] = -st; |
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347 | } |
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348 | phi+=DeltaPhi; |
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349 | } |
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350 | // The inner surface |
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351 | phi = fSPhi.getValue() + fDPhi.getValue(); |
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352 | t = FATAN((fRmin2.getValue()-fRmin1.getValue())/(2*fDz.getValue())); |
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353 | st = FSIN(t); |
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354 | ct = FCOS(t); |
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355 | for (i = 0; i<=NPHI; i++) { |
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356 | points[2*NPHI+2+2*i+0][0] = fRmin2.getValue()*FCOS(phi); |
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357 | points[2*NPHI+2+2*i+0][1] = fRmin2.getValue()*FSIN(phi); |
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358 | points[2*NPHI+2+2*i+0][2] = +fDz.getValue(); |
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359 | points[2*NPHI+2+2*i+1][0] = fRmin1.getValue()*FCOS(phi); |
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360 | points[2*NPHI+2+2*i+1][1] = fRmin1.getValue()*FSIN(phi); |
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361 | points[2*NPHI+2+2*i+1][2] = -fDz.getValue(); |
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362 | pp = phi-DeltaPhi/2.0; |
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363 | if (i!=NPHI) { |
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364 | normals[NPHI+i][0] = -ct*FCOS(pp); |
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365 | normals[NPHI+i][1] = -ct*FSIN(pp); |
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366 | normals[NPHI+i][2] = st; |
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367 | } |
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368 | phi-=DeltaPhi; |
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369 | } |
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370 | // The top side |
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371 | for (i=0;i<NPHI;i++) { |
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372 | normals[2*NPHI+i][0]=normals[2*NPHI+i][1]=0; |
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373 | normals[2*NPHI+i][2]= 1.0; |
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374 | } |
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375 | // The bottom side |
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376 | for (i=0;i<NPHI;i++) { |
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377 | normals[3*NPHI+i][0]=normals[3*NPHI+i][1]=0; |
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378 | normals[3*NPHI+i][2]= -1.0; |
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379 | } |
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380 | // The odd side |
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381 | phi = fSPhi.getValue(); |
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382 | normals[4*NPHI+0][0]= FSIN(phi); |
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383 | normals[4*NPHI+0][1]= -FCOS(phi); |
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384 | normals[4*NPHI+0][2]= 0; |
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385 | |
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386 | // Another odd side |
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387 | phi = fSPhi.getValue()+fDPhi.getValue(); |
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388 | normals[4*NPHI+1][0]= -FSIN(phi); |
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389 | normals[4*NPHI+1][1]= +FCOS(phi); |
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390 | normals[4*NPHI+1][2]=0; |
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391 | |
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392 | for (int np=0;np<NPOINTS;np++) theCoordinates->point.set1Value(np,points[np][0],points[np][1],points[np][2]); |
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393 | theFaceSet->coordIndex.setValues(0,NINDICES,indices); |
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394 | if (smoothDraw.getValue()) { |
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395 | // This Line is replaced by the next one because of an apparent Bug in Inventor (mem. leak). |
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396 | // theNormals->vector.deleteValues(0); |
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397 | for (int nf=0;nf<NFACES;nf++) theNormals->vector.set1Value(nf,normals[nf][0],normals[nf][1],normals[nf][2]); |
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398 | theNormalBinding->value=SoNormalBinding::PER_FACE; |
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399 | } |
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400 | else { |
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401 | for (int nf=0;nf<NFACES;nf++) theNormals->vector.set1Value(nf,normals[nf][0],normals[nf][1],normals[nf][2]); |
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402 | theNormalBinding->value=SoNormalBinding::PER_FACE; |
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403 | } |
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404 | } |
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405 | |
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406 | // generateChildren |
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407 | void SoCons::generateChildren() { |
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408 | |
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409 | // This routines creates one SoSeparator, one SoCoordinate3, and |
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410 | // one SoLineSet, and puts it in the child list. This is done only |
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411 | // once, whereas redrawing the position of the coordinates occurs each |
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412 | // time an update is necessary, in the updateChildren routine. |
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413 | |
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414 | assert(children->getLength() ==0); |
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415 | SoSeparator *sep = new SoSeparator(); |
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416 | SoCoordinate3 *theCoordinates = new SoCoordinate3(); |
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417 | SoNormal *theNormals = new SoNormal(); |
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418 | SoNormalBinding *theNormalBinding = new SoNormalBinding(); |
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419 | SoIndexedFaceSet *theFaceSet = new SoIndexedFaceSet(); |
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420 | // |
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421 | // This line costs some in render quality! but gives speed. |
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422 | // |
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423 | sep->addChild(theCoordinates); |
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424 | sep->addChild(theNormals); |
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425 | sep->addChild(theNormalBinding); |
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426 | sep->addChild(theFaceSet); |
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427 | children->append(sep); |
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428 | } |
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429 | |
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430 | // generateAlternateRep |
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431 | void SoCons::generateAlternateRep() { |
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432 | |
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433 | // This routine sets the alternate representation to the child |
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434 | // list of this mode. |
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435 | |
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436 | if (children->getLength() == 0) generateChildren(); |
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437 | updateChildren(); |
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438 | alternateRep.setValue((SoSeparator *) ( *children)[0]); |
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439 | } |
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440 | |
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441 | // clearAlternateRep |
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442 | void SoCons::clearAlternateRep() { |
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443 | alternateRep.setValue(NULL); |
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444 | } |
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445 | |
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446 | #endif |
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