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00002 * Copyright 1991-1996, Silicon Graphics, Inc. 00003 * ALL RIGHTS RESERVED 00004 * 00005 * UNPUBLISHED -- Rights reserved under the copyright laws of the United 00006 * States.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) 1996-2021 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_LIGHT_ 00051 #define _SO_LIGHT_ 00052 00053 #include <Inventor/nodes/SoNode.h> 00054 #include <Inventor/fields/SoSFBool.h> 00055 #include <Inventor/fields/SoSFColor.h> 00056 #include <Inventor/fields/SoSFFloat.h> 00057 #include <Inventor/SbViewportRegion.h> 00058 00059 class SoCamera; 00060 00062 // 00063 // Class: SoLight 00064 // 00065 // Abstract base light source node. 00066 // 00068 00123 class SoLight : public SoNode 00124 { 00125 00126 SO_NODE_ABSTRACT_HEADER( SoLight ); 00127 00128 public: 00133 SoSFBool on; 00134 00139 SoSFFloat intensity; 00140 00144 SoSFColor color; 00145 00146 private: 00148 virtual void callback( SoCallbackAction* action ); 00149 00151 virtual void doAction( SoAction* action ); 00152 00153 private: 00155 virtual inline SoCamera* getCamera( SoState* state, SoPath* scene, float visibilityLength ); 00156 00157 static void initClass(); 00158 static void exitClass(); 00159 00160 // Returns the light Id. 00161 int32_t getLightId() const; 00162 00163 struct LightConfiguration 00164 { 00165 bool enabled; 00166 SbVec4f position; 00167 SbMatrix transform; 00168 00169 SbVec3f spotDirection; 00170 float spotExponent; 00171 float spotCutoff; 00172 00173 SbVec4f ambientIntensity; 00174 SbVec4f diffuseIntensity; 00175 SbVec4f specularIntensity; 00176 00177 float constantAttenuation; 00178 float linearAttenuation; 00179 float quadraticAttenuation; 00180 00181 LightConfiguration() 00182 : transform(1, 0, 0, 0, 00183 0, 1, 0, 0, 00184 0, 0, 1, 0, 00185 0, 0, 0, 1) 00186 { 00187 enabled = false; 00188 position = SbVec4f( 0, 0, 0, 0 ); 00189 spotDirection = SbVec3f( 0, 0, -1 ); 00190 spotExponent = 0.0f; 00191 spotCutoff = 180.0f; 00192 ambientIntensity = SbVec4f( 0, 0, 0, 1 ); 00193 diffuseIntensity = SbVec4f( 1, 1, 1, 1 ); 00194 specularIntensity = SbVec4f( 1, 1, 1, 1 ); 00195 constantAttenuation = 1.0f; 00196 linearAttenuation = 0.0f; 00197 quadraticAttenuation = 0.0f; 00198 } 00199 }; 00200 00201 LightConfiguration lightConfiguration; 00202 00203 private: 00204 struct Members 00205 { 00206 Members(); 00207 ~Members(); 00208 void unref(); 00209 00210 int32_t m_lightId; 00212 SoCamera* m_camera; 00213 }; 00214 Members m_members; 00215 00217 static SoLight::Members* getMembers( const SoLight* sg ); 00218 00219 SoLight(); // Makes this abstract 00220 00221 virtual ~SoLight(); 00222 }; 00223 00224 /*******************************************************************************/ 00225 SoCamera* 00226 SoLight::getCamera( SoState*, SoPath*, float ) 00227 { 00228 return NULL; 00229 } 00230 00231 #endif /* _SO_LIGHT_ */ 00232