00001 /*======================================================================= 00002 * Copyright 1991-1996, Silicon Graphics, Inc. 00003 * ALL RIGHTS RESERVED 00004 * 00005 * UNPUBLISHED -- Rights reserved under the copyright laws of the United 00006 * States. Use of a copyright notice is precautionary only and does not 00007 * imply publication or disclosure. 00008 * 00009 * U.S. GOVERNMENT RESTRICTED RIGHTS LEGEND: 00010 * Use, duplication or disclosure by the Government is subject to restrictions 00011 * as set forth in FAR 52.227.19(c)(2) or subparagraph (c)(1)(ii) of the Rights 00012 * in Technical Data and Computer Software clause at DFARS 252.227-7013 and/or 00013 * in similar or successor clauses in the FAR, or the DOD or NASA FAR 00014 * Supplement. Contractor/manufacturer is Silicon Graphics, Inc., 00015 * 2011 N. Shoreline Blvd. Mountain View, CA 94039-7311. 00016 * 00017 * THE CONTENT OF THIS WORK CONTAINS CONFIDENTIAL AND PROPRIETARY 00018 * INFORMATION OF SILICON GRAPHICS, INC. ANY DUPLICATION, MODIFICATION, 00019 * DISTRIBUTION, OR DISCLOSURE IN ANY FORM, IN WHOLE, OR IN PART, IS STRICTLY 00020 * PROHIBITED WITHOUT THE PRIOR EXPRESS WRITTEN PERMISSION OF SILICON 00021 * GRAPHICS, INC. 00022 **=======================================================================*/ 00023 /*======================================================================= 00024 ** Author : Gavin Bell (MMM yyyy) 00025 **=======================================================================*/ 00026 /*======================================================================= 00027 *** THE CONTENT OF THIS WORK IS PROPRIETARY TO FEI S.A.S, (FEI S.A.S.), *** 00028 *** AND IS DISTRIBUTED UNDER A LICENSE AGREEMENT. *** 00029 *** *** 00030 *** REPRODUCTION, DISCLOSURE, OR USE, IN WHOLE OR IN PART, OTHER THAN AS *** 00031 *** SPECIFIED IN THE LICENSE ARE NOT TO BE UNDERTAKEN EXCEPT WITH PRIOR *** 00032 *** WRITTEN AUTHORIZATION OF FEI S.A.S. *** 00033 *** *** 00034 *** RESTRICTED RIGHTS LEGEND *** 00035 *** USE, DUPLICATION, OR DISCLOSURE BY THE GOVERNMENT OF THE CONTENT OF THIS *** 00036 *** WORK OR RELATED DOCUMENTATION IS SUBJECT TO RESTRICTIONS AS SET FORTH IN *** 00037 *** SUBPARAGRAPH (C)(1) OF THE COMMERCIAL COMPUTER SOFTWARE RESTRICTED RIGHT *** 00038 *** CLAUSE AT FAR 52.227-19 OR SUBPARAGRAPH (C)(1)(II) OF THE RIGHTS IN *** 00039 *** TECHNICAL DATA AND COMPUTER SOFTWARE CLAUSE AT DFARS 52.227-7013. *** 00040 *** *** 00041 *** COPYRIGHT (C) 1996-2019 BY FEI S.A.S, *** 00042 *** BORDEAUX, FRANCE *** 00043 *** ALL RIGHTS RESERVED *** 00044 **=======================================================================*/ 00045 /*======================================================================= 00046 ** Modified by : VSG (MMM YYYY) 00047 **=======================================================================*/ 00048 00049 00050 #ifndef _SO_INDEXED_TRIANGLE_STRIP_SET_ 00051 #define _SO_INDEXED_TRIANGLE_STRIP_SET_ 00052 00053 #include <Inventor/nodes/SoIndexedShape.h> 00054 #include <Inventor/SbPImpl.h> 00055 00056 class SoCoordinateElement; 00057 class SoNormalBundle; 00058 00059 SO_PIMPL_PUBLIC_DECLARATION(SoIndexedTriangleStripSet) 00060 00061 00062 // 00063 // Class: SoIndexedTriangleStripSet 00064 // 00065 // Indexed set of triangles strips. Strips are separated by the 00066 // special index SO_END_STRIP_INDEX (-1). The N indices in the strip 00067 // define N-2 triangles, which are formed by indexing into the 00068 // current coordinates. Depending on the current material and normal 00069 // binding values, the materials and normals for the triangles or 00070 // vertices may be accessed in order or indexed. If they are indexed, 00071 // the materialIndex and normalIndex fields are used. 00072 // 00074 00075 // This coordinate index indicates that the current triangle ends and the 00076 // next triangle begins 00077 #define SO_END_STRIP_INDEX (-1) 00078 00160 class SoIndexedTriangleStripSet : public SoIndexedShape 00161 { 00162 SO_NODE_HEADER(SoIndexedTriangleStripSet); 00163 SO_PIMPL_PUBLIC_HEADER(SoIndexedTriangleStripSet) 00164 00165 public: 00169 int getNumStrips( SoState* state = NULL ); 00170 00174 int getNumTriangles( SoState* state = NULL ); 00175 00176 // Constructor 00180 SoIndexedTriangleStripSet(); 00181 00182 private: 00183 // Implements actions 00184 virtual void GLRender( SoGLRenderAction* action ); 00185 00186 virtual void getPrimitiveCount( SoGetPrimitiveCountAction* action ); 00187 00188 // Generates default normals using the given normal bundle. 00189 virtual void generateDefaultNormals( SoState* state, 00190 const SbVec3f* coords, 00191 int numCoords, 00192 SoNormalBundle* nb, 00193 SbBool storeRef = FALSE ); 00194 00196 virtual void shouldGenerateTangents( SoGLRenderAction* /*action*/, const SoShapeStyleElement* /*shapeStyle*/ ) {} 00197 00198 private: 00199 static void initClass(); 00200 static void exitClass(); 00201 00202 // return num vertices for test 00203 virtual int getNumVert( SoState* state = NULL ); 00204 00205 // return num strips for test 00206 virtual int getNumPrim( SoState* state = NULL ); 00207 00208 private: 00209 // This enum is used to indicate the current material or normal binding 00210 enum Binding { 00211 OVERALL, 00212 PER_STRIP, 00213 PER_STRIP_INDEXED, 00214 PER_TRIANGLE, 00215 PER_TRIANGLE_INDEXED, 00216 PER_VERTEX, 00217 PER_VERTEX_INDEXED 00218 }; 00219 00220 // Generates triangles representing strips 00221 virtual void generatePrimitives( SoAction* action ); 00222 00223 // count primitives 00224 virtual void countPrim( SoState* state = NULL ); 00225 00226 virtual void callSetupIndices( SoState* state, const SoShapeStyleElement* shapeStyle, uint32_t useTexCoordsAnyway ); 00227 00228 // render function 00229 void doRendering( SoGLRenderAction* action, const SoShapeStyleElement* shapeStyle ); 00230 00231 // Overrides standard method to create an SoFaceDetail instance 00232 virtual SoDetail* createTriangleDetail( SoRayPickAction* action, 00233 const SoPrimitiveVertex* v1, 00234 const SoPrimitiveVertex* v2, 00235 const SoPrimitiveVertex* v3, 00236 SoPickedPoint* pp ); 00237 00238 ~SoIndexedTriangleStripSet(); 00239 00240 private: 00241 00242 static const int AUTO_CACHE_ITSS_MIN_WITHOUT_VP; 00243 static const int AUTO_CACHE_ITSS_MAX; 00244 }; 00245 00246 #endif /* _SO_INDEXED_TRIANGLE_STRIP_SET_ */ 00247