[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: SoCons.cc,v 1.8 2006/06/29 21:22:38 gunter Exp $ |
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| 29 | // GEANT4 tag $Name: geant4-08-01-patch-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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