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 SbProjector. These take 00048 | a point in two dimensions and project it to a point in three 00049 | dimensions. Typically, the point is the mouse position. 00050 | 00051 | SbProjectors are typically used by manipulators to turn the 00052 | mouse position into a rotation or translation. 00053 | 00054 | Author(s) : Howard Look, Paul Isaacs 00055 | 00056 ______________ S I L I C O N G R A P H I C S I N C . ____________ 00057 _______________________________________________________________________ 00058 */ 00059 00060 #ifndef _SB_PROJECTOR_ 00061 #define _SB_PROJECTOR_ 00062 00063 #include <Inventor/system/SbSystem.h> 00064 #include <Inventor/SbLinear.h> 00065 00068 00084 00085 00086 class INVENTOR_API SbProjector 00087 { 00088 public: 00089 00094 virtual SbVec3f project(const SbVec2f &point) = 0; 00095 00099 virtual void setViewVolume(const SbViewVolume &vol); 00100 00102 const SbViewVolume & getViewVolume() const { return viewVol; } 00103 00108 virtual void setWorkingSpace(const SbMatrix &space); 00109 00111 const SbMatrix & getWorkingSpace() const 00112 { return workingToWorld ; } 00113 00115 virtual SbProjector * copy() const = 0; 00116 00117 protected: 00121 SbProjector(); 00122 ~SbProjector(){}; 00123 00126 SbLine getWorkingLine(const SbVec2f &point) const; 00127 00128 SbViewVolume viewVol; 00129 SbMatrix worldToWorking; 00130 SbMatrix workingToWorld; 00131 }; 00132 00133 #endif /* _SB_PROJECTOR_ */