Open Inventor Reference
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00001 /* 00002 * 00003 * Copyright (C) 2000 Silicon Graphics, Inc. All Rights Reserved. 00004 * 00005 * This library is free software; you can redistribute it and/or 00006 * modify it under the terms of the GNU Lesser General Public 00007 * License as published by the Free Software Foundation; either 00008 * version 2.1 of the License, or (at your option) any later version. 00009 * 00010 * This library is distributed in the hope that it will be useful, 00011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00013 * Lesser General Public License for more details. 00014 * 00015 * Further, this software is distributed without any warranty that it is 00016 * free of the rightful claim of any third person regarding infringement 00017 * or the like. Any license provided herein, whether implied or 00018 * otherwise, applies only to this software file. Patent licenses, if 00019 * any, provided herein do not apply to combinations of this program with 00020 * other software, or any other product whatsoever. 00021 * 00022 * You should have received a copy of the GNU Lesser General Public 00023 * License along with this library; if not, write to the Free Software 00024 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00025 * 00026 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, 00027 * Mountain View, CA 94043, or: 00028 * 00029 * http://www.sgi.com 00030 * 00031 * For further information regarding this notice, see: 00032 * 00033 * http://oss.sgi.com/projects/GenInfo/NoticeExplan/ 00034 * 00035 */ 00036 00037 00038 /* 00039 * Copyright (C) 1990,91,92 Silicon Graphics, Inc. 00040 * 00041 _______________________________________________________________________ 00042 ______________ S I L I C O N G R A P H I C S I N C . ____________ 00043 | 00044 | $Revision: 1.1.1.1 $ 00045 | 00046 | Description: 00047 | This file contains the definition of the SbSphereProjector 00048 | class. This is an abstract base class for projectors 00049 | that somehow use a sphere in their projection. 00050 | 00051 | Author(s) : Howard Look 00052 | 00053 ______________ S I L I C O N G R A P H I C S I N C . ____________ 00054 _______________________________________________________________________ 00055 */ 00056 00057 #ifndef _SB_SPHERE_PROJECTOR_ 00058 #define _SB_SPHERE_PROJECTOR_ 00059 00060 #include <Inventor/projectors/SbProjector.h> 00061 00064 00077 00078 00079 class INVENTOR_API SbSphereProjector : public SbProjector 00080 { 00081 public: 00085 virtual SbVec3f project(const SbVec2f &point) = 0; 00086 00093 SbVec3f projectAndGetRotation(const SbVec2f &point, 00094 SbRotation &rot); 00095 00098 virtual SbRotation getRotation(const SbVec3f &point1, 00099 const SbVec3f &point2) = 0; 00100 00103 void setSphere(const SbSphere &sph); 00104 00107 const SbSphere & getSphere() const { return sphere; } 00108 00111 void setOrientToEye(SbBool orientToEye); 00114 SbBool isOrientToEye() const { return orientToEye; } 00115 00119 void setFront(SbBool inFront); 00122 SbBool isFront() const { return intersectFront; } 00125 SbBool isPointInFront( const SbVec3f &point ) const; 00126 00128 virtual void setWorkingSpace(const SbMatrix &space); 00129 00131 ~SbSphereProjector(){}; 00132 00133 protected: 00136 SbSphereProjector(SbBool orientToEye); 00137 SbSphereProjector(const SbSphere &s, SbBool orientToEye); 00138 00141 SbBool intersectFront; 00142 00145 SbBool intersectSphereFront(const SbLine &l, SbVec3f &result); 00146 00147 SbSphere sphere; 00148 SbBool orientToEye; 00149 SbBool needSetup; 00150 00151 00153 SbVec3f lastPoint; 00154 }; 00155 00156 #endif /* _SB_SPHERE_PROJECTOR_ */