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00002 * Copyright 1991-1996, Silicon Graphics, Inc. 00003 * ALL RIGHTS RESERVED 00004 * 00005 * UNPUBLISHED -- Rights reserved under the copyright laws of the United 00006 * States.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 : Paul S. Strauss (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) 1996-2020 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_NORMAL_ELEMENT 00051 #define _SO_NORMAL_ELEMENT 00052 00053 00054 00055 #include <Inventor/SbLinear.h> 00056 #include <Inventor/elements/SoReplacedElement.h> 00057 #include <Inventor/errors/SoDebugError.h> 00058 00073 SoEXTENDER_Documented class SoNormalElement : public SoReplacedElement { 00074 00075 SO_ELEMENT_HEADER(SoNormalElement); 00076 00077 public: 00082 static void set(SoState *state, SoNode *node, 00083 int32_t numNormals, const SbVec3f *normals); 00084 00088 static const SoNormalElement * getInstance(SoState *state) 00089 {return getConstElement<SoNormalElement>(state);} 00090 00094 int32_t getNum() const { return numNormals; } 00095 00099 const SbVec3f & get(int index) const 00100 { 00101 if (index < 0 || index >= numNormals) 00102 { 00103 #if defined(_DEBUG) 00104 SoDebugError::post("SoNormalElement::get", 00105 "Index (%d) is out of range 0 - %d", 00106 index, numNormals - 1); 00107 #endif 00108 return defaultNormal; 00109 } 00110 return normals[index]; 00111 } 00112 00116 virtual void print(FILE *fp) const; 00117 00118 private: 00119 00121 virtual void init(SoState *state); 00122 00123 private: 00124 // Initializes the SoNormalElement class 00125 static void initClass(); 00126 static void exitClass(); 00127 00128 private: 00129 int32_t numNormals; 00130 const SbVec3f *normals; 00131 00132 virtual ~SoNormalElement(); 00133 00134 private: 00135 // This stores a pointer to the default normal so that we can set 00136 // "normals" to point to it if no other normal has been set. 00137 static SbVec3f defaultNormal; 00138 }; 00139 00140 #endif /* _SO_NORMAL_ELEMENT */ 00141 00142 00143