| 1 | // |
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| 2 | // ******************************************************************** |
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| 3 | // * License and Disclaimer * |
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| 4 | // * * |
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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| 7 | // * conditions of the Geant4 Software License, included in the file * |
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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| 9 | // * include a list of copyright holders. * |
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| 10 | // * * |
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| 11 | // * Neither the authors of this software system, nor their employing * |
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| 12 | // * institutes,nor the agencies providing financial support for this * |
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| 13 | // * work make any representation or warranty, express or implied, * |
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| 14 | // * regarding this software system or assume any liability for its * |
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| 15 | // * use. Please see the license in the file LICENSE and URL above * |
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| 16 | // * for the full disclaimer and the limitation of liability. * |
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| 17 | // * * |
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| 18 | // * This code implementation is the result of the scientific and * |
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| 19 | // * technical work of the GEANT4 collaboration. * |
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| 20 | // * By using, copying, modifying or distributing the software (or * |
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| 21 | // * any work based on the software) you agree to acknowledge its * |
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| 22 | // * use in resulting scientific publications, and indicate your * |
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| 23 | // * acceptance of all terms of the Geant4 Software license. * |
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| 24 | // ******************************************************************** |
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| 25 | // |
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| 26 | // |
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| 27 | // |
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| 28 | // $Id: SoTrd.cc,v 1.8 2006/06/29 21:23:05 gunter Exp $ |
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| 29 | // GEANT4 tag $Name: geant4-09-04-ref-00 $ |
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| 30 | // |
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| 31 | /*-----------------------------HEPVis---------------------------------------*/ |
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| 32 | /* */ |
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| 33 | /* Node: SoTrd */ |
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| 34 | /* Description: Represents the G4Trd Geant Geometry entity */ |
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| 35 | /* Author: Joe Boudreau Nov 11 1996 */ |
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| 36 | /* */ |
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| 37 | /*--------------------------------------------------------------------------*/ |
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| 38 | |
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| 39 | #ifdef G4VIS_BUILD_OI_DRIVER |
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| 40 | |
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| 41 | #include <assert.h> |
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| 42 | #include <cmath> |
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| 43 | |
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| 44 | #include <Inventor/SbBox.h> |
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| 45 | #include <Inventor/actions/SoAction.h> |
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| 46 | #include <Inventor/fields/SoSFFloat.h> |
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| 47 | #include <Inventor/misc/SoChildList.h> |
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| 48 | #include <Inventor/nodes/SoSeparator.h> |
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| 49 | #include <Inventor/nodes/SoIndexedFaceSet.h> |
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| 50 | #include <Inventor/nodes/SoNormal.h> |
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| 51 | #include <Inventor/nodes/SoCoordinate3.h> |
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| 52 | #include <Inventor/nodes/SoNormalBinding.h> |
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| 53 | #include <Inventor/SoPrimitiveVertex.h> |
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| 54 | #include <Inventor/elements/SoTextureCoordinateElement.h> |
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| 55 | |
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| 56 | #include "HEPVis/SbMath.h" |
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| 57 | #include "HEPVis/nodes/SoTrd.h" |
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| 58 | |
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| 59 | // This statement is required |
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| 60 | SO_NODE_SOURCE(SoTrd) |
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| 61 | |
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| 62 | // initClass |
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| 63 | void SoTrd::initClass(){ |
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| 64 | SO_NODE_INIT_CLASS(SoTrd,SoShape,"Shape"); |
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| 65 | } |
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| 66 | // Constructor |
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| 67 | SoTrd::SoTrd() { |
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| 68 | // This statement is required |
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| 69 | SO_NODE_CONSTRUCTOR(SoTrd); |
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| 70 | // Data fields are initialized like this: |
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| 71 | SO_NODE_ADD_FIELD(fDx1,(1.0)); |
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| 72 | SO_NODE_ADD_FIELD(fDx2,(1.0)); |
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| 73 | SO_NODE_ADD_FIELD(fDy1,(1.0)); |
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| 74 | SO_NODE_ADD_FIELD(fDy2,(1.0)); |
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| 75 | SO_NODE_ADD_FIELD(fDz,(1.0)); |
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| 76 | SO_NODE_ADD_FIELD(alternateRep,(NULL)); |
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| 77 | children = new SoChildList(this); |
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| 78 | } |
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| 79 | // Destructor |
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| 80 | SoTrd::~SoTrd() { |
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| 81 | delete children; |
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| 82 | } |
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| 83 | // generatePrimitives |
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| 84 | void SoTrd::generatePrimitives(SoAction *action) { |
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| 85 | // This variable is used to store each vertex |
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| 86 | SoPrimitiveVertex pv; |
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| 87 | |
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| 88 | // Access the stat from the action |
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| 89 | SoState *state = action->getState(); |
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| 90 | |
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| 91 | // See if we have to use a texture coordinate function, |
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| 92 | // rather than generating explicit texture coordinates. |
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| 93 | SbBool useTexFunction= |
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| 94 | (SoTextureCoordinateElement::getType(state) == |
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| 95 | SoTextureCoordinateElement::FUNCTION); |
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| 96 | |
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| 97 | // If we need to generate texture coordinates with a function, |
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| 98 | // we'll need an SoGLTextureCoordinateElement. Otherwise, we'll |
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| 99 | // set up the coordinates directly. |
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| 100 | const SoTextureCoordinateElement *tce = NULL; |
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| 101 | SbVec4f texCoord; |
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| 102 | if (useTexFunction) { |
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| 103 | tce = SoTextureCoordinateElement::getInstance(state); |
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| 104 | } |
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| 105 | else { |
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| 106 | texCoord[2] = 0.0; |
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| 107 | texCoord[3] = 1.0; |
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| 108 | } |
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| 109 | SbVec3f point, normal; |
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| 110 | |
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| 111 | |
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| 112 | ////////////////////////////////////////// |
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| 113 | //---------------------------------------- |
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| 114 | #define GEN_VERTEX(pv,x,y,z,s,t,nx,ny,nz) \ |
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| 115 | point.setValue(x,y,z); \ |
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| 116 | normal.setValue(nx,ny,nz); \ |
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| 117 | if (useTexFunction) { \ |
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| 118 | texCoord=tce->get(point,normal); \ |
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| 119 | } \ |
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| 120 | else { \ |
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| 121 | texCoord[0]=s; \ |
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| 122 | texCoord[1]=t; \ |
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| 123 | } \ |
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| 124 | pv.setPoint(point); \ |
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| 125 | pv.setNormal(normal); \ |
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| 126 | pv.setTextureCoords(texCoord); \ |
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| 127 | shapeVertex(&pv); |
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| 128 | //---------------------------------------- |
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| 129 | ////////////////////////////////////////// |
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| 130 | |
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| 131 | const int NPOINTS=8, NFACES=6, NINDICES = NFACES*5; |
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| 132 | int indices[NINDICES] = {3,2,1,0, SO_END_FACE_INDEX, //z back. |
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| 133 | 4,5,6,7, SO_END_FACE_INDEX, //z front. |
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| 134 | 0,1,5,4, SO_END_FACE_INDEX, //y up. |
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| 135 | 1,2,6,5, SO_END_FACE_INDEX, //x left. |
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| 136 | 2,3,7,6, SO_END_FACE_INDEX, //y down. |
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| 137 | 3,0,4,7, SO_END_FACE_INDEX}; //x right. |
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| 138 | |
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| 139 | |
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| 140 | // points for the eight vertices |
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| 141 | float points[NPOINTS][3]; |
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| 142 | points[0][0] = fDx1.getValue(); |
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| 143 | points[0][1] = fDy1.getValue(); |
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| 144 | points[0][2] = -fDz.getValue(); |
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| 145 | |
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| 146 | points[1][0] = -fDx1.getValue(); |
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| 147 | points[1][1] = fDy1.getValue(); |
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| 148 | points[1][2] = -fDz.getValue(); |
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| 149 | |
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| 150 | points[2][0] = -fDx1.getValue(); |
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| 151 | points[2][1] = -fDy1.getValue(); |
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| 152 | points[2][2] = -fDz.getValue(); |
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| 153 | |
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| 154 | points[3][0] = fDx1.getValue(); |
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| 155 | points[3][1] = -fDy1.getValue(); |
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| 156 | points[3][2] = -fDz.getValue(); |
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| 157 | |
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| 158 | points[4][0] = fDx2.getValue(); |
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| 159 | points[4][1] = fDy2.getValue(); |
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| 160 | points[4][2] = fDz.getValue(); |
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| 161 | |
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| 162 | points[5][0] = -fDx2.getValue(); |
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| 163 | points[5][1] = fDy2.getValue(); |
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| 164 | points[5][2] = fDz.getValue(); |
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| 165 | |
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| 166 | points[6][0] = -fDx2.getValue(); |
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| 167 | points[6][1] = -fDy2.getValue(); |
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| 168 | points[6][2] = fDz.getValue(); |
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| 169 | |
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| 170 | points[7][0] = fDx2.getValue(); |
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| 171 | points[7][1] = -fDy2.getValue(); |
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| 172 | points[7][2] = fDz.getValue(); |
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| 173 | |
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| 174 | float t1 = FATAN((fDx2.getValue()-fDx1.getValue())/(2*fDz.getValue())); |
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| 175 | float t2 = FATAN((fDy2.getValue()-fDy1.getValue())/(2*fDz.getValue())); |
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| 176 | float st1 = FSIN(t1); |
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| 177 | float st2 = FSIN(t2); |
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| 178 | float ct1 = FCOS(t1); |
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| 179 | float ct2 = FCOS(t2); |
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| 180 | |
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| 181 | float normals[NFACES][3]; |
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| 182 | //z back. |
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| 183 | normals[0][0] = 0 ; normals[0][1] = 0; normals [0][2] = -1; |
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| 184 | //z front. |
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| 185 | normals[1][0] = 0 ; normals[1][1] = 0; normals [1][2] = 1; |
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| 186 | //y up. |
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| 187 | normals[2][0] = 0 ; normals[2][1] = ct2; normals [2][2] = -st2; |
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| 188 | //x left. |
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| 189 | normals[3][0] = -ct1; normals[3][1] = 0; normals [3][2] = -st1; |
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| 190 | //y down. |
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| 191 | normals[4][0] = 0 ; normals[4][1] = -ct2; normals [4][2] = -st2; |
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| 192 | //x right. |
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| 193 | normals[5][0] = ct1; normals[5][1] = 0; normals [5][2] = -st1; |
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| 194 | |
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| 195 | float x,y,z; |
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| 196 | int index; |
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| 197 | for (int nf=0;nf<NFACES;nf++) { |
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| 198 | beginShape(action,TRIANGLE_FAN); |
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| 199 | index = indices[nf * 5]; |
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| 200 | x = points[index][0]; |
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| 201 | y = points[index][1]; |
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| 202 | z = points[index][2]; |
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| 203 | GEN_VERTEX(pv,x,y,z,0.0,0.0,normals[nf][0],normals[nf][1],normals[nf][2]); |
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| 204 | index = indices[nf * 5 + 1]; |
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| 205 | x = points[index][0]; |
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| 206 | y = points[index][1]; |
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| 207 | z = points[index][2]; |
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| 208 | GEN_VERTEX(pv,x,y,z,0.0,0.0,normals[nf][0],normals[nf][1],normals[nf][2]); |
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| 209 | index = indices[nf * 5 + 2]; |
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| 210 | x = points[index][0]; |
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| 211 | y = points[index][1]; |
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| 212 | z = points[index][2]; |
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| 213 | GEN_VERTEX(pv,x,y,z,0.0,0.0,normals[nf][0],normals[nf][1],normals[nf][2]); |
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| 214 | index = indices[nf * 5 + 3]; |
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| 215 | x = points[index][0]; |
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| 216 | y = points[index][1]; |
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| 217 | z = points[index][2]; |
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| 218 | GEN_VERTEX(pv,x,y,z,0.0,0.0,normals[nf][0],normals[nf][1],normals[nf][2]); |
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| 219 | endShape(); |
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| 220 | } |
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| 221 | } |
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| 222 | |
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| 223 | // getChildren |
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| 224 | SoChildList *SoTrd::getChildren() const { |
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| 225 | return children; |
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| 226 | } |
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| 227 | |
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| 228 | |
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| 229 | // computeBBox |
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| 230 | void SoTrd::computeBBox(SoAction *, SbBox3f &box, SbVec3f ¢er ){ |
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| 231 | float fDx= fDx1.getValue(),fDy=fDy1.getValue(); |
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| 232 | |
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| 233 | if (fDx2.getValue() > fDx) fDx = fDx2.getValue(); |
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| 234 | if (fDy2.getValue() > fDy) fDy = fDy2.getValue(); |
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| 235 | |
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| 236 | SbVec3f vmin(-fDx,-fDy,-fDz.getValue()), |
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| 237 | vmax( fDx, fDy, fDz.getValue()); |
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| 238 | |
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| 239 | center.setValue(0,0,0); |
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| 240 | box.setBounds(vmin,vmax); |
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| 241 | } |
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| 242 | |
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| 243 | |
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| 244 | |
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| 245 | |
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| 246 | // updateChildren |
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| 247 | void SoTrd::updateChildren() { |
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| 248 | |
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| 249 | |
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| 250 | // Redraw the G4Trd.... |
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| 251 | |
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| 252 | assert(children->getLength()==1); |
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| 253 | SoSeparator *sep = (SoSeparator *) ( *children)[0]; |
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| 254 | SoCoordinate3 *theCoordinates = (SoCoordinate3 *) ( sep->getChild(0)); |
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| 255 | SoNormal *theNormals = (SoNormal *) ( sep->getChild(1)); |
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| 256 | SoNormalBinding *theNormalBinding = (SoNormalBinding *) ( sep->getChild(2)); |
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| 257 | SoIndexedFaceSet *theFaceSet = (SoIndexedFaceSet *) ( sep->getChild(3)); |
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| 258 | |
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| 259 | const int NPOINTS=8, NFACES=6, NINDICES = NFACES*5; |
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| 260 | float points[NPOINTS][3]; |
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| 261 | float normals[NFACES][3]= {{0,0,-1}, {0,0,1}, {0,1,0}, {-1, 0, 0}, {0, -1, 0}, {1,0,0}}; |
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| 262 | |
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| 263 | // Indices for the eight faces |
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| 264 | #ifdef INVENTOR2_0 |
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| 265 | static long |
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| 266 | #else |
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| 267 | static int32_t |
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| 268 | #endif |
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| 269 | indices[NINDICES] = {3,2,1,0, SO_END_FACE_INDEX, // bottom |
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| 270 | 4,5,6,7, SO_END_FACE_INDEX, // top |
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| 271 | 0,1,5,4, SO_END_FACE_INDEX, |
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| 272 | 1,2,6,5, SO_END_FACE_INDEX, |
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| 273 | 2,3,7,6, SO_END_FACE_INDEX, |
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| 274 | 3,0,4,7, SO_END_FACE_INDEX}; |
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| 275 | |
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| 276 | |
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| 277 | // points for the eight vertices |
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| 278 | points[0][0] = fDx1.getValue(); points[0][1] = fDy1.getValue(); points[0][2] = -fDz.getValue(); |
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| 279 | points[1][0] = -fDx1.getValue(); points[1][1] = fDy1.getValue(); points[1][2] = -fDz.getValue(); |
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| 280 | points[2][0] = -fDx1.getValue(); points[2][1] = -fDy1.getValue(); points[2][2] = -fDz.getValue(); |
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| 281 | points[3][0] = fDx1.getValue(); points[3][1] = -fDy1.getValue(); points[3][2] = -fDz.getValue(); |
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| 282 | points[4][0] = fDx2.getValue(); points[4][1] = fDy2.getValue(); points[4][2] = fDz.getValue(); |
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| 283 | points[5][0] = -fDx2.getValue(); points[5][1] = fDy2.getValue(); points[5][2] = fDz.getValue(); |
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| 284 | points[6][0] = -fDx2.getValue(); points[6][1] = -fDy2.getValue(); points[6][2] = fDz.getValue(); |
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| 285 | points[7][0] = fDx2.getValue(); points[7][1] = -fDy2.getValue(); points[7][2] = fDz.getValue(); |
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| 286 | |
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| 287 | float t1 = FATAN((fDx2.getValue()-fDx1.getValue())/(2*fDz.getValue())); |
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| 288 | float t2 = FATAN((fDy2.getValue()-fDy1.getValue())/(2*fDz.getValue())); |
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| 289 | float st1 = FSIN(t1); |
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| 290 | float st2 = FSIN(t2); |
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| 291 | float ct1 = FCOS(t1); |
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| 292 | float ct2 = FCOS(t2); |
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| 293 | |
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| 294 | normals[0][0] = 0 ; normals[0][1] = 0; normals [0][2] = -1; |
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| 295 | normals[1][0] = 0 ; normals[1][1] = 0; normals [1][2] = 1; |
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| 296 | normals[2][0] = 0 ; normals[2][1] = ct2; normals [2][2] = -st2; |
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| 297 | normals[3][0] = -ct1; normals[3][1] = 0; normals [3][2] = -st1; |
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| 298 | normals[4][0] = 0 ; normals[4][1] = -ct2; normals [4][2] = -st2; |
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| 299 | normals[5][0] = ct1; normals[5][1] = 0; normals [5][2] = -st1; |
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| 300 | |
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| 301 | for (int np=0;np<NPOINTS;np++) theCoordinates->point.set1Value(np,points[np][0],points[np][1],points[np][2]); |
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| 302 | theFaceSet->coordIndex.setValues(0,NINDICES,indices); |
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| 303 | for (int nf=0;nf<NFACES;nf++) theNormals->vector.set1Value(nf,normals[nf][0],normals[nf][1],normals[nf][2]); |
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| 304 | theNormalBinding->value=SoNormalBinding::PER_FACE; |
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| 305 | } |
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| 306 | |
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| 307 | // generateChildren |
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| 308 | void SoTrd::generateChildren() { |
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| 309 | |
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| 310 | // This routines creates one SoSeparator, one SoCoordinate3, and |
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| 311 | // one SoLineSet, and puts it in the child list. This is done only |
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| 312 | // once, whereas redrawing the position of the coordinates occurs each |
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| 313 | // time an update is necessary, in the updateChildren routine. |
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| 314 | |
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| 315 | assert(children->getLength() ==0); |
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| 316 | SoSeparator *sep = new SoSeparator(); |
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| 317 | SoCoordinate3 *theCoordinates = new SoCoordinate3(); |
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| 318 | SoNormal *theNormals = new SoNormal(); |
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| 319 | SoNormalBinding *theNormalBinding = new SoNormalBinding(); |
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| 320 | SoIndexedFaceSet *theFaceSet = new SoIndexedFaceSet(); |
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| 321 | // |
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| 322 | // This line costs some in render quality! but gives speed. |
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| 323 | // |
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| 324 | sep->addChild(theCoordinates); |
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| 325 | sep->addChild(theNormals); |
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| 326 | sep->addChild(theNormalBinding); |
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| 327 | sep->addChild(theFaceSet); |
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| 328 | children->append(sep); |
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| 329 | } |
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| 330 | |
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| 331 | // generateAlternateRep |
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| 332 | void SoTrd::generateAlternateRep() { |
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| 333 | |
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| 334 | // This routine sets the alternate representation to the child |
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| 335 | // list of this mode. |
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| 336 | |
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| 337 | if (children->getLength() == 0) generateChildren(); |
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| 338 | updateChildren(); |
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| 339 | alternateRep.setValue((SoSeparator *) ( *children)[0]); |
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| 340 | } |
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| 341 | |
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| 342 | // clearAlternateRep |
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| 343 | void SoTrd::clearAlternateRep() { |
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| 344 | alternateRep.setValue(NULL); |
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| 345 | } |
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| 346 | |
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| 347 | #endif |
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