[529] | 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: SoTrap.cc,v 1.8 2006/06/29 21:23:03 gunter Exp $ |
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[850] | 29 | // GEANT4 tag $Name: HEAD $ |
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[529] | 30 | // |
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| 31 | /*-----------------------------HEPVis----------------------------------------*/ |
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| 32 | /* */ |
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| 33 | /* Node: SoTrap */ |
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| 34 | /* Description: Represents the G4Trap 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 | |
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| 40 | #ifdef G4VIS_BUILD_OI_DRIVER |
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| 41 | |
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| 42 | // this : |
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| 43 | #include "HEPVis/nodes/SoTrap.h" |
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| 44 | |
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| 45 | #include <assert.h> |
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| 46 | #include <cmath> |
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| 47 | #include <Inventor/SbBox.h> |
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| 48 | #include <Inventor/actions/SoGLRenderAction.h> |
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| 49 | #include <Inventor/actions/SoAction.h> |
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| 50 | #include <Inventor/fields/SoSFFloat.h> |
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| 51 | #include <Inventor/misc/SoChildList.h> |
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| 52 | #include <Inventor/nodes/SoSeparator.h> |
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| 53 | #include <Inventor/nodes/SoIndexedFaceSet.h> |
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| 54 | #include <Inventor/nodes/SoNormal.h> |
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| 55 | #include <Inventor/nodes/SoCoordinate3.h> |
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| 56 | #include <Inventor/nodes/SoNormalBinding.h> |
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| 57 | #include <Inventor/SoPrimitiveVertex.h> |
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| 58 | #include <Inventor/elements/SoTextureCoordinateElement.h> |
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| 59 | |
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| 60 | #include "HEPVis/SbMath.h" |
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| 61 | |
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| 62 | // This statement is required |
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| 63 | SO_NODE_SOURCE(SoTrap) |
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| 64 | |
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| 65 | // Constructor |
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| 66 | SoTrap::SoTrap() { |
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| 67 | // This statement is required |
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| 68 | SO_NODE_CONSTRUCTOR(SoTrap); |
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| 69 | |
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| 70 | // Data fields are initialized like this: |
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| 71 | SO_NODE_ADD_FIELD(pDz, (1.0)); |
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| 72 | SO_NODE_ADD_FIELD(pTheta, (0.0)); |
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| 73 | SO_NODE_ADD_FIELD(pPhi, (0.0)); |
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| 74 | SO_NODE_ADD_FIELD(pDy1, (1.0)); |
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| 75 | SO_NODE_ADD_FIELD(pDx1, (1.0)); |
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| 76 | SO_NODE_ADD_FIELD(pDx2, (1.0)); |
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| 77 | SO_NODE_ADD_FIELD(pDy2, (1.0)); |
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| 78 | SO_NODE_ADD_FIELD(pDx3, (1.0)); |
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| 79 | SO_NODE_ADD_FIELD(pDx4, (1.0)); |
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| 80 | SO_NODE_ADD_FIELD(pAlp1, (0.0)); |
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| 81 | SO_NODE_ADD_FIELD(pAlp2, (0.0)); |
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| 82 | SO_NODE_ADD_FIELD(alternateRep, (NULL)); |
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| 83 | children = new SoChildList(this); |
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| 84 | } |
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| 85 | |
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| 86 | // Destructor |
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| 87 | SoTrap::~SoTrap() { |
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| 88 | delete children; |
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| 89 | } |
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| 90 | |
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| 91 | |
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| 92 | // initClass |
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| 93 | void SoTrap::initClass(){ |
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| 94 | // This statement is required. |
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| 95 | SO_NODE_INIT_CLASS(SoTrap,SoShape,"Shape"); |
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| 96 | } |
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| 97 | |
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| 98 | |
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| 99 | // generatePrimitives |
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| 100 | void SoTrap::generatePrimitives(SoAction *action) { |
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| 101 | // This variable is used to store each vertex |
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| 102 | SoPrimitiveVertex pv; |
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| 103 | |
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| 104 | // Access the stat from the action |
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| 105 | SoState *state = action->getState(); |
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| 106 | |
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| 107 | // See if we have to use a texture coordinate function, |
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| 108 | // rather than generating explicit texture coordinates. |
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| 109 | SbBool useTexFunction= |
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| 110 | (SoTextureCoordinateElement::getType(state) == |
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| 111 | SoTextureCoordinateElement::FUNCTION); |
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| 112 | |
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| 113 | // If we need to generate texture coordinates with a function, |
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| 114 | // we'll need an SoGLTextureCoordinateElement. Otherwise, we'll |
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| 115 | // set up the coordinates directly. |
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| 116 | const SoTextureCoordinateElement *tce = NULL; |
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| 117 | SbVec4f texCoord; |
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| 118 | if (useTexFunction) { |
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| 119 | tce = SoTextureCoordinateElement::getInstance(state); |
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| 120 | } |
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| 121 | else { |
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| 122 | texCoord[2] = 0.0; |
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| 123 | texCoord[3] = 1.0; |
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| 124 | } |
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| 125 | SbVec3f point, normal; |
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| 126 | |
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| 127 | |
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| 128 | ////////////////////////////////////////// |
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| 129 | //---------------------------------------- |
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| 130 | #define GEN_VERTEX(pv,x,y,z,s,t,nx,ny,nz) \ |
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| 131 | point.setValue(x,y,z); \ |
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| 132 | normal.setValue(nx,ny,nz); \ |
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| 133 | if (useTexFunction) { \ |
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| 134 | texCoord=tce->get(point,normal); \ |
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| 135 | } \ |
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| 136 | else { \ |
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| 137 | texCoord[0]=s; \ |
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| 138 | texCoord[1]=t; \ |
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| 139 | } \ |
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| 140 | pv.setPoint(point); \ |
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| 141 | pv.setNormal(normal); \ |
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| 142 | pv.setTextureCoords(texCoord); \ |
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| 143 | shapeVertex(&pv); |
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| 144 | //---------------------------------------- |
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| 145 | ////////////////////////////////////////// |
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| 146 | |
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| 147 | const int NPOINTS=8, NFACES=6, NINDICES = NFACES*5; |
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| 148 | int indices[NINDICES] = {3,2,1,0, SO_END_FACE_INDEX, //z back. |
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| 149 | 4,5,6,7, SO_END_FACE_INDEX, //z front. |
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| 150 | 0,1,5,4, SO_END_FACE_INDEX, //y up. |
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| 151 | 1,2,6,5, SO_END_FACE_INDEX, //x left. |
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| 152 | 2,3,7,6, SO_END_FACE_INDEX, //y down. |
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| 153 | 3,0,4,7, SO_END_FACE_INDEX}; //x right. |
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| 154 | |
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| 155 | // points for the eight vertices |
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| 156 | float TthetaCphi = FTAN(pTheta.getValue())*FCOS(pPhi.getValue()); |
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| 157 | float TthetaSphi = FTAN(pTheta.getValue())*FSIN(pPhi.getValue()); |
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| 158 | float Talp1 = FTAN(pAlp1.getValue()); |
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| 159 | float Talp2 = FTAN(pAlp2.getValue()); |
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| 160 | |
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| 161 | float points[NPOINTS][3]; |
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| 162 | points[0][0] = pDx2.getValue()+pDy1.getValue()*Talp1; |
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| 163 | points[0][1] = pDy1.getValue(); |
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| 164 | points[0][2] = -pDz.getValue(); |
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| 165 | |
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| 166 | points[1][0] = -pDx2.getValue()+pDy1.getValue()*Talp1; |
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| 167 | points[1][1] = pDy1.getValue(); |
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| 168 | points[1][2] = -pDz.getValue(); |
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| 169 | |
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| 170 | points[2][0] = -pDx1.getValue()-pDy1.getValue()*Talp1; |
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| 171 | points[2][1] = -pDy1.getValue(); |
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| 172 | points[2][2] = -pDz.getValue(); |
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| 173 | |
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| 174 | points[3][0] = pDx1.getValue()-pDy1.getValue()*Talp1; |
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| 175 | points[3][1] = -pDy1.getValue(); |
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| 176 | points[3][2] = -pDz.getValue(); |
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| 177 | |
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| 178 | points[4][0] = pDx4.getValue()+pDy2.getValue()*Talp2; |
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| 179 | points[4][1] = pDy2.getValue(); |
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| 180 | points[4][2] = pDz.getValue(); |
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| 181 | |
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| 182 | points[5][0] = -pDx4.getValue()+pDy2.getValue()*Talp2; |
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| 183 | points[5][1] = pDy2.getValue(); |
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| 184 | points[5][2] = pDz.getValue(); |
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| 185 | |
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| 186 | points[6][0] = -pDx3.getValue()-pDy2.getValue()*Talp2; |
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| 187 | points[6][1] = -pDy2.getValue(); |
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| 188 | points[6][2] = pDz.getValue(); |
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| 189 | |
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| 190 | points[7][0] = pDx3.getValue()-pDy2.getValue()*Talp2; |
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| 191 | points[7][1] = -pDy2.getValue(); |
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| 192 | points[7][2] = pDz.getValue(); |
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| 193 | |
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| 194 | int i; |
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| 195 | for (i=0;i<4;i++) { |
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| 196 | points[i][0] -= pDz.getValue()*TthetaCphi; |
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| 197 | points[i][1] -= pDz.getValue()*TthetaSphi; |
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| 198 | } |
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| 199 | for (i=4;i<8;i++) { |
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| 200 | points[i][0] += pDz.getValue()*TthetaCphi; |
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| 201 | points[i][1] += pDz.getValue()*TthetaSphi; |
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| 202 | } |
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| 203 | |
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| 204 | SbVec3f normals[NFACES]; |
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| 205 | int nf; |
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| 206 | for (nf=0;nf<NFACES;nf++) { |
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| 207 | int j0 = indices[5*nf + 0]; |
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| 208 | int j1 = indices[5*nf + 1]; |
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| 209 | int j2 = indices[5*nf + 2]; |
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| 210 | SbVec3f p0(points[j0][0],points[j0][1],points[j0][2]); |
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| 211 | SbVec3f p1(points[j1][0],points[j1][1],points[j1][2]); |
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| 212 | SbVec3f p2(points[j2][0],points[j2][1],points[j2][2]); |
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| 213 | normals[nf] = (p1-p0).cross(p2-p0); |
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| 214 | normals[nf].normalize(); |
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| 215 | } |
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| 216 | |
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| 217 | float x,y,z; |
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| 218 | int index; |
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| 219 | for (nf=0;nf<NFACES;nf++) { |
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| 220 | beginShape(action,TRIANGLE_FAN); |
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| 221 | index = indices[nf * 5]; |
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| 222 | x = points[index][0]; |
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| 223 | y = points[index][1]; |
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| 224 | z = points[index][2]; |
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| 225 | GEN_VERTEX(pv,x,y,z,0.0,0.0,normals[nf][0],normals[nf][1],normals[nf][2]); |
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| 226 | index = indices[nf * 5 + 1]; |
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| 227 | x = points[index][0]; |
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| 228 | y = points[index][1]; |
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| 229 | z = points[index][2]; |
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| 230 | GEN_VERTEX(pv,x,y,z,0.0,0.0,normals[nf][0],normals[nf][1],normals[nf][2]); |
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| 231 | index = indices[nf * 5 + 2]; |
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| 232 | x = points[index][0]; |
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| 233 | y = points[index][1]; |
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| 234 | z = points[index][2]; |
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| 235 | GEN_VERTEX(pv,x,y,z,0.0,0.0,normals[nf][0],normals[nf][1],normals[nf][2]); |
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| 236 | index = indices[nf * 5 + 3]; |
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| 237 | x = points[index][0]; |
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| 238 | y = points[index][1]; |
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| 239 | z = points[index][2]; |
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| 240 | GEN_VERTEX(pv,x,y,z,0.0,0.0,normals[nf][0],normals[nf][1],normals[nf][2]); |
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| 241 | endShape(); |
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| 242 | } |
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| 243 | } |
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| 244 | |
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| 245 | // getChildren |
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| 246 | SoChildList *SoTrap::getChildren() const { |
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| 247 | return children; |
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| 248 | } |
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| 249 | |
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| 250 | |
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| 251 | // computeBBox |
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| 252 | void SoTrap::computeBBox(SoAction *, SbBox3f &box, SbVec3f ¢er ){ |
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| 253 | float pDx= pDx1.getValue(),pDy=pDy1.getValue(); |
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| 254 | |
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| 255 | if (pDx2.getValue() > pDx) pDx = pDx2.getValue(); |
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| 256 | if (pDx3.getValue() > pDx) pDx = pDx3.getValue(); |
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| 257 | if (pDx4.getValue() > pDx) pDx = pDx4.getValue(); |
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| 258 | if (pDy2.getValue() > pDy) pDy = pDy2.getValue(); |
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| 259 | float TthetaCphi = FTAN(pTheta.getValue())*FCOS(pPhi.getValue()); |
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| 260 | float TthetaSphi = FTAN(pTheta.getValue())*FSIN(pPhi.getValue()); |
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| 261 | float Xalp = FFABS(std::tan(pAlp1.getValue())*pDy1.getValue()); |
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| 262 | float Xalp2 = FFABS(std::tan(pAlp2.getValue())*pDy2.getValue()); |
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| 263 | if (Xalp< Xalp2) Xalp=Xalp2; |
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| 264 | pDx += FFABS(TthetaCphi*pDz.getValue()); |
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| 265 | pDx += Xalp; |
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| 266 | pDy += FFABS(TthetaSphi*pDz.getValue()); |
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| 267 | |
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| 268 | |
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| 269 | center.setValue(0,0,0); |
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| 270 | box.setBounds(SbVec3f(-pDx,-pDy,-pDz.getValue()), |
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| 271 | SbVec3f( pDx, pDy, pDz.getValue())); |
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| 272 | } |
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| 273 | |
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| 274 | |
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| 275 | |
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| 276 | |
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| 277 | // updateChildren |
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| 278 | void SoTrap::updateChildren() { |
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| 279 | |
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| 280 | |
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| 281 | // Redraw the G4Trap.... |
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| 282 | |
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| 283 | assert(children->getLength()==1); |
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| 284 | SoSeparator *sep = (SoSeparator *) ( *children)[0]; |
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| 285 | SoCoordinate3 *theCoordinates = (SoCoordinate3 *) ( sep->getChild(0)); |
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| 286 | SoNormal *theNormals = (SoNormal *) ( sep->getChild(1)); |
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| 287 | SoNormalBinding *theNormalBinding = (SoNormalBinding *) ( sep->getChild(2)); |
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| 288 | SoIndexedFaceSet *theFaceSet = (SoIndexedFaceSet *) ( sep->getChild(3)); |
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| 289 | |
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| 290 | const int NPOINTS=8, NFACES=6, NINDICES = NFACES*5; |
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| 291 | float points[NPOINTS][3]; |
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| 292 | // Indices for the eight faces |
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| 293 | #ifdef INVENTOR2_0 |
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| 294 | static long |
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| 295 | #else |
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| 296 | static int32_t |
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| 297 | #endif |
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| 298 | indices[NINDICES] = {3,2,1,0, SO_END_FACE_INDEX, // bottom |
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| 299 | 4,5,6,7, SO_END_FACE_INDEX, // top |
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| 300 | 0,1,5,4, SO_END_FACE_INDEX, |
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| 301 | 1,2,6,5, SO_END_FACE_INDEX, |
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| 302 | 2,3,7,6, SO_END_FACE_INDEX, |
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| 303 | 3,0,4,7, SO_END_FACE_INDEX}; |
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| 304 | |
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| 305 | |
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| 306 | // points for the eight vertices |
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| 307 | float TthetaCphi = FTAN(pTheta.getValue())*FCOS(pPhi.getValue()); |
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| 308 | float TthetaSphi = FTAN(pTheta.getValue())*FSIN(pPhi.getValue()); |
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| 309 | float Talp1 = FTAN(pAlp1.getValue()); |
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| 310 | float Talp2 = FTAN(pAlp2.getValue()); |
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| 311 | |
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| 312 | points[0][0] = pDx2.getValue()+pDy1.getValue()*Talp1; |
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| 313 | points[0][1] = pDy1.getValue(); |
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| 314 | points[0][2] = -pDz.getValue(); |
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| 315 | |
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| 316 | points[1][0] = -pDx2.getValue()+pDy1.getValue()*Talp1; |
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| 317 | points[1][1] = pDy1.getValue(); |
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| 318 | points[1][2] = -pDz.getValue(); |
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| 319 | |
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| 320 | points[2][0] = -pDx1.getValue()-pDy1.getValue()*Talp1; |
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| 321 | points[2][1] = -pDy1.getValue(); |
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| 322 | points[2][2] = -pDz.getValue(); |
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| 323 | |
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| 324 | points[3][0] = pDx1.getValue()-pDy1.getValue()*Talp1; |
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| 325 | points[3][1] = -pDy1.getValue(); |
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| 326 | points[3][2] = -pDz.getValue(); |
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| 327 | |
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| 328 | points[4][0] = pDx4.getValue()+pDy2.getValue()*Talp2; |
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| 329 | points[4][1] = pDy2.getValue(); |
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| 330 | points[4][2] = pDz.getValue(); |
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| 331 | |
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| 332 | points[5][0] = -pDx4.getValue()+pDy2.getValue()*Talp2; |
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| 333 | points[5][1] = pDy2.getValue(); |
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| 334 | points[5][2] = pDz.getValue(); |
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| 335 | |
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| 336 | points[6][0] = -pDx3.getValue()-pDy2.getValue()*Talp2; |
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| 337 | points[6][1] = -pDy2.getValue(); |
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| 338 | points[6][2] = pDz.getValue(); |
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| 339 | |
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| 340 | points[7][0] = pDx3.getValue()-pDy2.getValue()*Talp2; |
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| 341 | points[7][1] = -pDy2.getValue(); |
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| 342 | points[7][2] = pDz.getValue(); |
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| 343 | |
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| 344 | int i; |
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| 345 | for (i=0;i<4;i++) { |
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| 346 | points[i][0] -= pDz.getValue()*TthetaCphi; |
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| 347 | points[i][1] -= pDz.getValue()*TthetaSphi; |
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| 348 | } |
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| 349 | for (i=4;i<8;i++) { |
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| 350 | points[i][0] += pDz.getValue()*TthetaCphi; |
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| 351 | points[i][1] += pDz.getValue()*TthetaSphi; |
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| 352 | } |
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| 353 | |
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| 354 | for (int np=0;np<NPOINTS;np++) theCoordinates->point.set1Value(np,points[np][0],points[np][1],points[np][2]); |
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| 355 | theFaceSet->coordIndex.setValues(0,NINDICES,indices); |
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| 356 | theNormals->vector.deleteValues(0); |
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| 357 | theNormals->vector.insertSpace(0,6); |
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| 358 | for (int n=0;n<6;n++) { |
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| 359 | int i0 = 5*n+0,i1=5*n+1,i2=5*n+2; |
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| 360 | int j0 = theFaceSet->coordIndex[i0]; |
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| 361 | int j1 = theFaceSet->coordIndex[i1]; |
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| 362 | int j2 = theFaceSet->coordIndex[i2]; |
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| 363 | SbVec3f p0= theCoordinates->point[j0]; |
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| 364 | SbVec3f p1= theCoordinates->point[j1]; |
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| 365 | SbVec3f p2= theCoordinates->point[j2]; |
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| 366 | SbVec3f normal = (p1-p0).cross(p2-p0); |
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| 367 | normal.normalize(); |
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| 368 | theNormals->vector.set1Value(n,normal); |
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| 369 | } |
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| 370 | theNormalBinding->value=SoNormalBinding::PER_FACE; |
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| 371 | } |
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| 372 | |
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| 373 | // generateChildren |
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| 374 | void SoTrap::generateChildren() { |
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| 375 | |
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| 376 | // This routines creates one SoSeparator, one SoCoordinate3, and |
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| 377 | // one SoLineSet, and puts it in the child list. This is done only |
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| 378 | // once, whereas redrawing the position of the coordinates occurs each |
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| 379 | // time an update is necessary, in the updateChildren routine. |
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| 380 | |
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| 381 | assert(children->getLength() ==0); |
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| 382 | SoSeparator *sep = new SoSeparator(); |
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| 383 | SoCoordinate3 *theCoordinates = new SoCoordinate3(); |
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| 384 | SoNormal *theNormals = new SoNormal(); |
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| 385 | SoNormalBinding *theNormalBinding = new SoNormalBinding(); |
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| 386 | SoIndexedFaceSet *theFaceSet = new SoIndexedFaceSet(); |
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| 387 | // |
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| 388 | // This line costs some in render quality! but gives speed. |
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| 389 | // |
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| 390 | sep->addChild(theCoordinates); |
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| 391 | sep->addChild(theNormals); |
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| 392 | sep->addChild(theNormalBinding); |
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| 393 | sep->addChild(theFaceSet); |
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| 394 | children->append(sep); |
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| 395 | } |
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| 396 | |
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| 397 | // generateAlternateRep |
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| 398 | void SoTrap::generateAlternateRep() { |
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| 399 | |
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| 400 | // This routine sets the alternate representation to the child |
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| 401 | // list of this mode. |
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| 402 | |
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| 403 | if (children->getLength() == 0) generateChildren(); |
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| 404 | updateChildren(); |
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| 405 | alternateRep.setValue((SoSeparator *) ( *children)[0]); |
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| 406 | } |
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| 407 | |
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| 408 | // clearAlternateRep |
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| 409 | void SoTrap::clearAlternateRep() { |
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| 410 | alternateRep.setValue(NULL); |
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| 411 | } |
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| 412 | |
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| 413 | #endif |
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