1 #ifndef COIN_SBPROJECTOR_H 2 #define COIN_SBPROJECTOR_H 3 4 /**************************************************************************\ 5 * Copyright (c) Kongsberg Oil & Gas Technologies AS 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions are 10 * met: 11 * 12 * Redistributions of source code must retain the above copyright notice, 13 * this list of conditions and the following disclaimer. 14 * 15 * Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * Neither the name of the copyright holder nor the names of its 20 * contributors may be used to endorse or promote products derived from 21 * this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 27 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 28 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 29 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 30 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 31 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 32 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 33 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 \**************************************************************************/ 35 36 #include <Inventor/SbVec3f.h> 37 #include <Inventor/SbLine.h> 38 #include <Inventor/SbMatrix.h> 39 #include <Inventor/SbViewVolume.h> 40 41 class SbVec2f; 42 43 class COIN_DLL_API SbProjector { 44 public: 45 virtual SbVec3f project(const SbVec2f & point) = 0; 46 virtual void setViewVolume(const SbViewVolume & vol); 47 const SbViewVolume & getViewVolume(void) const; 48 virtual void setWorkingSpace(const SbMatrix & space); 49 const SbMatrix & getWorkingSpace(void) const; 50 virtual SbProjector * copy(void) const = 0; 51 52 virtual SbBool tryProject(const SbVec2f & point, const float epsilon, SbVec3f & result); 53 54 protected: 55 SbProjector(void); ~SbProjector()56 virtual ~SbProjector() { } 57 58 SbLine getWorkingLine(const SbVec2f & point) const; 59 60 SbViewVolume viewVol; 61 SbMatrix worldToWorking, workingToWorld; 62 63 float findVanishingDistance(void) const; 64 SbBool verifyProjection(const SbVec3f & projpt) const; 65 }; 66 67 #endif // !COIN_SBPROJECTOR_H 68