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00002 * Copyright 1991-1996, Silicon Graphics, Inc. 00003 * ALL RIGHTS RESERVED 00004 * 00005 * UNPUBLISHED -- Rights reserved under the copyright laws of the United 00006 * States.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_SHAPE_HINTS_ 00051 #define _SO_SHAPE_HINTS_ 00052 00053 #include <Inventor/elements/SoShapeHintsElement.h> 00054 #include <Inventor/fields/SoSFEnum.h> 00055 #include <Inventor/fields/SoSFFloat.h> 00056 #include <Inventor/fields/SoSFBool.h> 00057 #include <Inventor/nodes/SoNode.h> 00058 00060 // 00061 // Class: SoShapeHints 00062 // 00063 // This node is used to give hints about subsequent shapes defined in 00064 // a scene graph. It allows Inventor to provide or optimize certain 00065 // features (such as back-face culling and two-sided lighting) based 00066 // on information about shapes. The vertexOrdering, faceType, and 00067 // shapeType fields hold this information. There is also a crease 00068 // angle field, which is used when default normals are generated for 00069 // a polyhedral shape. It defines the smallest edge angle that will 00070 // be shaded as a crease (faceted), rather than as smooth. 00071 // 00073 00172 class SoShapeHints : public SoNode { 00173 00174 SO_NODE_HEADER(SoShapeHints); 00175 00176 public: 00182 enum VertexOrdering { 00186 UNKNOWN_ORDERING = SoShapeHintsElement::UNKNOWN_ORDERING, 00190 CLOCKWISE = SoShapeHintsElement::CLOCKWISE, 00194 COUNTERCLOCKWISE = SoShapeHintsElement::COUNTERCLOCKWISE 00195 }; 00196 00201 enum ShapeType { 00205 UNKNOWN_SHAPE_TYPE = SoShapeHintsElement::UNKNOWN_SHAPE_TYPE, 00209 SOLID = SoShapeHintsElement::SOLID 00210 }; 00211 00213 enum FaceType { 00217 UNKNOWN_FACE_TYPE = SoShapeHintsElement::UNKNOWN_FACE_TYPE, 00221 CONVEX = SoShapeHintsElement::CONVEX 00222 }; 00223 00225 enum WindingType { 00230 NO_WINDING_TYPE = SoShapeHintsElement::NO_WINDING_TYPE, 00236 ODD_TYPE = SoShapeHintsElement::ODD_TYPE, 00241 NON_ZERO_TYPE = SoShapeHintsElement::NON_ZERO_TYPE, 00246 POSITIVE_TYPE = SoShapeHintsElement::POSITIVE_TYPE, 00251 NEGATIVE_TYPE = SoShapeHintsElement::NEGATIVE_TYPE, 00257 ABS_GEQ_TWO_TYPE = SoShapeHintsElement::ABS_GEQ_TWO_TYPE 00258 }; 00259 00266 SoSFEnum vertexOrdering; 00273 SoSFEnum shapeType; 00281 SoSFEnum faceType; 00282 00324 SoSFEnum windingType; 00325 00342 SoSFBool useVBO ; 00343 00350 SoSFFloat creaseAngle; 00351 00367 SoSFFloat neighborTolerance; 00368 00372 SoShapeHints(); 00373 00377 static SbBool isVBOSupported() ; 00378 00383 inline virtual void setOverride(const SbBool state) 00384 { override.setValue(state); } 00385 00389 inline virtual SbBool isOverride() const 00390 { return override.getValue(); } 00391 00392 private: 00393 virtual void doAction(SoAction *action); 00394 virtual void GLRender(SoGLRenderAction *action); 00395 virtual void callback(SoCallbackAction *action); 00396 virtual void pick(SoPickAction *action); 00397 virtual void getBoundingBox(SoGetBoundingBoxAction *action); 00398 00399 private: 00400 static void initClass(); 00401 static void exitClass(); 00402 00403 SoSFBool override; 00404 00405 private: 00406 virtual ~SoShapeHints(); 00407 00408 private: 00409 // Does regular doAction stuff, also sets shapehints element 00410 void doAction2(SoAction *action); 00411 }; 00412 00413 #endif /* _SO_SHAPE_HINTS_ */ 00414 00415