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00002 * Copyright 1991-1996, Silicon Graphics, Inc. 00003 * ALL RIGHTS RESERVED 00004 * 00005 * UNPUBLISHED -- Rights reserved under the copyright laws of the United 00006 * States.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 : Alain Dumesny (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 #ifdef SOQT 00051 # include <Inventor/Qt/viewers/SoQtConstrainedViewer.h> 00052 #elif defined _WIN32 00053 # include <Inventor/Win/viewers/SoWinConstrainedViewer.h> 00054 #else // _WIN32 00055 00056 #ifndef _SO_XT_CONSTRAINED_VIEWER_ 00057 #define _SO_XT_CONSTRAINED_VIEWER_ 00058 00059 #include <Inventor/Xt/viewers/SoXtFullViewer.h> 00060 #include <Inventor/SbBox.h> 00061 #include <Inventor/Gui/viewers/SoGuiConstrainedViewer.h> 00062 00064 // 00065 // Class: SoXtConstrainedViewer 00066 // 00068 00091 class SoXtConstrainedViewer : public SoXtFullViewer 00092 { 00093 public: 00094 00100 void setUpDirection ( const SbVec3f& newUpDirection ); 00104 SbVec3f getUpDirection() { return m_guiConstViewer->getUpDirection(); } 00105 00106 // 00107 // redefine these to add constrained viewer functionality 00108 // 00109 virtual void setCamera( SoCamera* newCam ); 00110 virtual void saveHomePosition(); 00111 virtual void resetToHomePosition(); 00112 virtual void recomputeSceneSize(); 00113 00114 private: 00115 SoGuiConstrainedViewer* getGuiConstrainedViewer() const; 00116 00117 // Retro compatibility only 00118 SbVec3f upDirection; 00119 float sceneHeight, sceneSize; 00120 00121 private: 00122 SoXtConstrainedViewer( SoWidget parent, 00123 const char* name, 00124 SbBool buildInsideParent, 00125 SoXtFullViewer::BuildFlag flag, 00126 SoXtViewer::Type type, 00127 SbBool buildNow, 00128 SbBool sync = TRUE ); 00129 00130 SoXtConstrainedViewer( SoWidget parent, 00131 const char* name, 00132 SbBool buildInsideParent, 00133 SoXtFullViewer::BuildFlag flag, 00134 SoXtViewer::Type type, 00135 SbBool buildNow, 00136 SbBool sync, 00137 SoGuiConstrainedViewer* guiConstViewer ); 00138 00139 ~SoXtConstrainedViewer(); 00140 00141 // Tilts the camera, restraining it to 180 degree rotation from the 00142 // up direction. A positive angle tilts the camera up. 00143 virtual void tiltCamera( float deltaAngle ); 00144 00145 // Redefine these to do constrained viewing tasks. 00146 // The bottom wheel rotates the camera around the up direction, the 00147 // left wheel tilts the camera up/down constraning to 180 degree from 00148 // the up direction. 00149 virtual void bottomWheelMotion( float newVal ); 00150 virtual void leftWheelMotion( float newVal ); 00151 00152 // This is called during a paste. 00153 // We redefine this to keep the right vector of the camera 00154 // in a parallel plane. 00155 virtual void changeCameraValues( SoCamera* newCamera ); 00156 00157 // this routine is called by subclasses to find and set the new 00158 // up direction given the current mouse position. If something is 00159 // picked, the normal to the object picked will be used to specify 00160 // the new up direction. 00161 void findUpDirection( const SbVec2s& mouseLocation ); 00162 00163 // this routine checks the camera orientation and makes sure that the 00164 // current right vector and the ideal right vector (cross between the 00165 // view vector and world up direction) are the same (i.e. no unwanted 00166 // roll), else it fixes it. This keeps the up direction valid. 00167 void checkForCameraUpConstrain(); 00168 00169 // Redefine this to keep the up vector when seeking 00170 virtual void computeSeekFinalOrientation(); 00171 00172 private: 00173 00174 void constructorCommon( SbBool buildNow ); 00175 SoGuiConstrainedViewer* m_guiConstViewer; // Implementation class of SoXxConstrainedViewer 00176 00177 }; 00178 00179 #endif /* _SO_XT_CONSTRAINED_VIEWER_ */ 00180 00181 #endif // _WIN32 00182 00183 00184