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00002 * Copyright 1991-1996, Silicon Graphics, Inc. 00003 * ALL RIGHTS RESERVED 00004 * 00005 * UNPUBLISHED -- Rights reserved under the copyright laws of the United 00006 * States.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_GET_MATRIX_ACTION_ 00051 #define _SO_GET_MATRIX_ACTION_ 00052 00053 #include <Inventor/SbLinear.h> 00054 #include <Inventor/actions/SoSubAction.h> 00055 #include <Inventor/SbViewportRegion.h> 00056 00058 // 00059 // Class: SoGetMatrixAction 00060 // 00061 // For computing a cumulative transformation matrix and its inverse, 00062 // along with a cumulative texture transformation matrix and its inverse. 00063 // 00064 // This action is unlike most others in that it does not traverse 00065 // downwards. When called on a node, it computes the matrix for just 00066 // that node. (This makes sense for transformation nodes, but not for 00067 // others, really.) When called on a path, it gathers the 00068 // transformation info for all nodes in the path and those that 00069 // affect nodes in the path, but it stops when it hits the last node 00070 // in the path; it does not traverse downwards from it as other 00071 // actions (such as rendering) do. This behavior makes the most sense 00072 // for this action. 00073 // 00074 // EXTENDERS: The model and texture matrix elements are not enabled 00075 // for this action. Your transformation nodes must use the 00076 // getMatrix/getInverse calls and directly modify the matrices stored 00077 // in the action. 00078 // 00080 00142 class SoGetMatrixAction : public SoAction { 00143 00144 SO_ACTION_HEADER(SoGetMatrixAction); 00145 00146 public: 00158 SoGetMatrixAction(const SbViewportRegion &newRegion); 00159 00160 // Destructor 00161 #ifndef HIDDEN_FROM_DOC 00162 virtual ~SoGetMatrixAction(); 00163 #endif // HIDDEN_FROM_DOC 00164 00168 void setViewportRegion(const SbViewportRegion &newRegion); 00169 00173 const SbViewportRegion &getViewportRegion() const { return vpRegion; } 00174 00180 SbMatrix & getMatrix() { return ctm; } 00186 SbMatrix & getInverse() { return inv; } 00187 00193 SbMatrix & getTextureMatrix() { return texCtm; } 00199 SbMatrix & getTextureInverse() { return texInv; } 00200 00201 private: 00202 static void initClass(); 00203 static void exitClass(); 00204 00205 private: 00206 // Initiates action on graph 00207 virtual void beginTraversal(SoNode *node); 00208 00209 private: 00210 SbMatrix ctm; // Cumulative transformation matrix 00211 SbMatrix inv; // Inverse transformation matrix 00212 SbMatrix texCtm; // Cumulative texture transf matrix 00213 SbMatrix texInv; // Inverse texture transf matrix 00214 SbViewportRegion vpRegion; // Current viewport region 00215 00216 }; 00217 00218 #endif /* _SO_GET_MATRIX_ACTION_ */ 00219 00220