| 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: SoBox.cc,v 1.8 2006/06/29 21:22:36 gunter Exp $
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| 29 | // GEANT4 tag $Name: HEAD $
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| 30 | //
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| 31 | /*----------------------------HEPVis----------------------------------------*/
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| 32 | /* */
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| 33 | /* Node: SoBox */
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| 34 | /* Description: Represents the G4Box 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/SoBox.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 |
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| 47 | #include <Inventor/SbBox.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/SoCube.h>
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| 52 | #include <Inventor/nodes/SoScale.h>
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| 53 | #include <Inventor/actions/SoAction.h>
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| 54 | #include <Inventor/nodes/SoIndexedFaceSet.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 | // This statement is required
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| 59 | SO_NODE_SOURCE(SoBox)
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| 60 |
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| 61 | // Constructor
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| 62 | SoBox::SoBox() {
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| 63 | // This statement is required
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| 64 | SO_NODE_CONSTRUCTOR(SoBox);
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| 65 |
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| 66 | // Data fields are initialized like this:
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| 67 | SO_NODE_ADD_FIELD(fDx, (1.0));
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| 68 | SO_NODE_ADD_FIELD(fDy, (1.0));
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| 69 | SO_NODE_ADD_FIELD(fDz, (1.0));
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| 70 | SO_NODE_ADD_FIELD(alternateRep, (NULL));
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| 71 | children = new SoChildList(this);
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| 72 | }
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| 73 |
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| 74 | // Destructor
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| 75 | SoBox::~SoBox() {
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| 76 | delete children;
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| 77 | }
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| 78 |
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| 79 |
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| 80 | // initClass
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| 81 | void SoBox::initClass(){
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| 82 | // This statement is required.
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| 83 | SO_NODE_INIT_CLASS(SoBox,SoShape,"Shape");
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| 84 | }
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| 85 |
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| 86 |
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| 87 | // generatePrimitives
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| 88 | void SoBox::generatePrimitives(SoAction *action) {
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| 89 | // This variable is used to store each vertex
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| 90 | SoPrimitiveVertex pv;
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| 91 |
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| 92 | // Access the stat from the action
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| 93 | SoState *state = action->getState();
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| 94 |
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| 95 | // See if we have to use a texture coordinate function,
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| 96 | // rather than generating explicit texture coordinates.
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| 97 | SbBool useTexFunction=
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| 98 | (SoTextureCoordinateElement::getType(state) ==
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| 99 | SoTextureCoordinateElement::FUNCTION);
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| 100 |
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| 101 | // If we need to generate texture coordinates with a function,
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| 102 | // we'll need an SoGLTextureCoordinateElement. Otherwise, we'll
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| 103 | // set up the coordinates directly.
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| 104 | const SoTextureCoordinateElement *tce = NULL;
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| 105 | SbVec4f texCoord;
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| 106 | if (useTexFunction) {
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| 107 | tce = SoTextureCoordinateElement::getInstance(state);
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| 108 | }
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| 109 | else {
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| 110 | texCoord[2] = 0.0;
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| 111 | texCoord[3] = 1.0;
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| 112 | }
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| 113 | SbVec3f point, normal;
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| 114 |
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| 115 |
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| 116 | //////////////////////////////////////////
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| 117 | //----------------------------------------
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| 118 | #define GEN_VERTEX(pv,x,y,z,s,t,nx,ny,nz) \
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| 119 | point.setValue(x,y,z); \
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| 120 | normal.setValue(nx,ny,nz); \
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| 121 | if (useTexFunction) { \
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| 122 | texCoord=tce->get(point,normal); \
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| 123 | } \
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| 124 | else { \
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| 125 | texCoord[0]=s; \
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| 126 | texCoord[1]=t; \
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| 127 | } \
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| 128 | pv.setPoint(point); \
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| 129 | pv.setNormal(normal); \
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| 130 | pv.setTextureCoords(texCoord); \
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| 131 | shapeVertex(&pv);
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| 132 | //----------------------------------------
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| 133 | //////////////////////////////////////////
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| 134 |
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| 135 | const int NPOINTS=8, NFACES=6, NINDICES = NFACES*5;
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| 136 | int indices[NINDICES] = {3,2,1,0, SO_END_FACE_INDEX, //z back.
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| 137 | 4,5,6,7, SO_END_FACE_INDEX, //z front.
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| 138 | 0,1,5,4, SO_END_FACE_INDEX, //y up.
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| 139 | 1,2,6,5, SO_END_FACE_INDEX, //x left.
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| 140 | 2,3,7,6, SO_END_FACE_INDEX, //y down.
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| 141 | 3,0,4,7, SO_END_FACE_INDEX}; //x right.
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| 142 |
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| 143 |
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| 144 | // points for the eight vertices
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| 145 | float points[NPOINTS][3];
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| 146 | points[0][0] = fDx.getValue();
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| 147 | points[0][1] = fDy.getValue();
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| 148 | points[0][2] = -fDz.getValue();
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| 149 |
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| 150 | points[1][0] = -fDx.getValue();
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| 151 | points[1][1] = fDy.getValue();
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| 152 | points[1][2] = -fDz.getValue();
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| 153 |
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| 154 | points[2][0] = -fDx.getValue();
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| 155 | points[2][1] = -fDy.getValue();
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| 156 | points[2][2] = -fDz.getValue();
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| 157 |
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| 158 | points[3][0] = fDx.getValue();
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| 159 | points[3][1] = -fDy.getValue();
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| 160 | points[3][2] = -fDz.getValue();
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| 161 |
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| 162 | points[4][0] = fDx.getValue();
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| 163 | points[4][1] = fDy.getValue();
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| 164 | points[4][2] = fDz.getValue();
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| 165 |
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| 166 | points[5][0] = -fDx.getValue();
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| 167 | points[5][1] = fDy.getValue();
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| 168 | points[5][2] = fDz.getValue();
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| 169 |
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| 170 | points[6][0] = -fDx.getValue();
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| 171 | points[6][1] = -fDy.getValue();
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| 172 | points[6][2] = fDz.getValue();
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| 173 |
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| 174 | points[7][0] = fDx.getValue();
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| 175 | points[7][1] = -fDy.getValue();
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| 176 | points[7][2] = fDz.getValue();
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| 177 |
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| 178 | float normals[NFACES][3];
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| 179 | //z back.
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| 180 | normals[0][0] = 0 ; normals[0][1] = 0; normals [0][2] = -1;
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| 181 | //z front.
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| 182 | normals[1][0] = 0 ; normals[1][1] = 0; normals [1][2] = 1;
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| 183 | //y up.
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| 184 | normals[2][0] = 0 ; normals[2][1] = 1; normals [2][2] = 0;
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| 185 | //x left.
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| 186 | normals[3][0] = -1 ; normals[3][1] = 0; normals [3][2] = 0;
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| 187 | //y down.
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| 188 | normals[4][0] = 0 ; normals[4][1] = -1; normals [4][2] = 0;
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| 189 | //x right.
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| 190 | normals[5][0] = 1 ; normals[5][1] = 0; normals [5][2] = 0;
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| 191 |
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| 192 | float x,y,z;
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| 193 | int index;
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| 194 | for (int nf=0;nf<NFACES;nf++) {
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| 195 | beginShape(action,TRIANGLE_FAN);
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| 196 | index = indices[nf * 5];
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| 197 | x = points[index][0];
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| 198 | y = points[index][1];
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| 199 | z = points[index][2];
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| 200 | GEN_VERTEX(pv,x,y,z,0.0,0.0,normals[nf][0],normals[nf][1],normals[nf][2]);
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| 201 | index = indices[nf * 5 + 1];
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| 202 | x = points[index][0];
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| 203 | y = points[index][1];
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| 204 | z = points[index][2];
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| 205 | GEN_VERTEX(pv,x,y,z,0.0,0.0,normals[nf][0],normals[nf][1],normals[nf][2]);
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| 206 | index = indices[nf * 5 + 2];
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| 207 | x = points[index][0];
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| 208 | y = points[index][1];
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| 209 | z = points[index][2];
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| 210 | GEN_VERTEX(pv,x,y,z,0.0,0.0,normals[nf][0],normals[nf][1],normals[nf][2]);
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| 211 | index = indices[nf * 5 + 3];
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| 212 | x = points[index][0];
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| 213 | y = points[index][1];
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| 214 | z = points[index][2];
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| 215 | GEN_VERTEX(pv,x,y,z,0.0,0.0,normals[nf][0],normals[nf][1],normals[nf][2]);
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| 216 | endShape();
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| 217 | }
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| 218 | }
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| 219 |
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| 220 | // getChildren
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| 221 | SoChildList *SoBox::getChildren() const {
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| 222 | return children;
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| 223 | }
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| 224 |
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| 225 |
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| 226 | // computeBBox
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| 227 | void SoBox::computeBBox(SoAction *, SbBox3f &box, SbVec3f ¢er ){
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| 228 | SbVec3f vmin(-fDx.getValue(),-fDy.getValue(),-fDz.getValue()),
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| 229 | vmax( fDx.getValue(), fDy.getValue(), fDz.getValue());
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| 230 | center.setValue(0,0,0);
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| 231 | box.setBounds(vmin,vmax);
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| 232 | }
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| 233 |
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| 234 |
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| 235 |
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| 236 |
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| 237 | // updateChildren
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| 238 | void SoBox::updateChildren() {
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| 239 |
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| 240 |
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| 241 | // Redraw the G4Box....
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| 242 |
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| 243 | assert(children->getLength()==1);
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| 244 | SoSeparator *sep = (SoSeparator *) ( *children)[0];
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| 245 | SoScale *scale = (SoScale *)( sep->getChild(0));
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| 246 | //SoCube *cube = (SoCube *)( sep->getChild(1));
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| 247 | scale->scaleFactor.setValue(fDx.getValue(), fDy.getValue(), fDz.getValue());
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| 248 | }
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| 249 |
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| 250 | // generateChildren
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| 251 | void SoBox::generateChildren() {
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| 252 |
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| 253 | // A box consists of a set of scale factors and a
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| 254 | // cube.
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| 255 |
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| 256 | assert(children->getLength() ==0);
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| 257 | SoSeparator *sep = new SoSeparator();
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| 258 | SoScale *scale = new SoScale();
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| 259 | SoCube *cube = new SoCube();
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| 260 |
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| 261 | sep->addChild(scale);
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| 262 | sep->addChild(cube);
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| 263 | children->append(sep);
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| 264 | }
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| 265 |
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| 266 | // generateAlternateRep
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| 267 | void SoBox::generateAlternateRep() {
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| 268 |
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| 269 | // This routine sets the alternate representation to the child
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| 270 | // list of this mode.
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| 271 |
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| 272 | if (children->getLength() == 0) generateChildren();
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| 273 | updateChildren();
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| 274 | alternateRep.setValue((SoSeparator *) ( *children)[0]);
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| 275 | }
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| 276 |
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| 277 | // clearAlternateRep
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| 278 | void SoBox::clearAlternateRep() {
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| 279 | alternateRep.setValue(NULL);
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| 280 | }
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| 281 |
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| 282 | #endif
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