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00002 * Copyright 1991-1996, Silicon Graphics, Inc. 00003 * ALL RIGHTS RESERVED 00004 * 00005 * UNPUBLISHED -- Rights reserved under the copyright laws of the United 00006 * States.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 Isaacs (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_ANTI_SQUISH_ 00051 #define _SO_ANTI_SQUISH_ 00052 00053 #include <Inventor/fields/SoFieldData.h> 00054 #include <Inventor/nodes/SoNode.h> 00055 #include <Inventor/nodes/SoTransformation.h> 00056 #include <Inventor/fields/SoSFBool.h> 00057 #include <Inventor/fields/SoSFEnum.h> 00058 00060 // 00061 // Class: SoAntiSquish 00062 // 00063 // undoes any uneven scales in the current transformation matrix. 00064 // during traversal 00065 // 00067 00108 class SoAntiSquish : public SoTransformation { 00109 00110 SO_NODE_HEADER(SoAntiSquish); 00111 00112 public: 00113 00117 SoAntiSquish(); 00118 00120 enum Sizing { 00124 X, 00128 Y, 00132 Z, 00136 AVERAGE_DIMENSION, 00140 BIGGEST_DIMENSION, 00144 SMALLEST_DIMENSION, 00149 LONGEST_DIAGONAL 00150 }; 00151 00152 // Fields 00158 SoSFEnum sizing; 00165 SoSFBool recalcAlways; 00166 00171 void recalc(); 00172 00173 private: 00174 virtual void callback(SoCallbackAction *action); 00175 virtual void GLRender(SoGLRenderAction *action); 00176 virtual void getBoundingBox(SoGetBoundingBoxAction *action); 00177 virtual void getMatrix(SoGetMatrixAction *action); 00178 virtual void pick(SoPickAction *action); 00179 00180 // Called by actions that need to change the state with a new matrix. 00181 void doAction(SoAction *action); 00182 00183 private: 00184 static void initClass(); 00185 static void exitClass(); 00186 00187 private: 00188 virtual ~SoAntiSquish(); 00189 00190 SbMatrix getUnsquishingMatrix( SbMatrix squishedMatrix, SbBool doInverse, 00191 SbMatrix &inverseAnswer ); 00192 00193 private: 00194 SbMatrix savedAnswer, savedInverseAnswer; 00195 00196 SbBool recalcNextTime; 00197 }; 00198 00199 #endif /* _SO_ANTI_SQUISH_ */ 00200 00201