csgeom/obb.h
Go to the documentation of this file.00001 /* 00002 Copyright (C) 2002 by Jorrit Tyberghein 00003 Copyright (C) 2002 by Daniel Duhprey 00004 00005 This library is free software; you can redistribute it and/or 00006 modify it under the terms of the GNU Library General Public 00007 License as published by the Free Software Foundation; either 00008 version 2 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 Library General Public License for more details. 00014 00015 You should have received a copy of the GNU Library General Public 00016 License along with this library; if not, write to the Free 00017 Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 00018 */ 00019 00020 #ifndef __CS_OBB_H__ 00021 #define __CS_OBB_H__ 00022 00030 #include "csextern.h" 00031 00032 #include "csgeom/box.h" 00033 #include "csgeom/matrix3.h" 00034 00035 class csVector3; 00036 class csReversibleTransform; 00037 00042 class CS_CRYSTALSPACE_EXPORT csOBB : public csBox3 00043 { 00044 private: 00045 csMatrix3 mMat; 00046 00047 public: 00051 csOBB () {} 00052 00056 csOBB (const csOBB &b) : csBox3 (b), mMat (b.mMat) { } 00057 00061 csOBB (const csBox3 &b) : csBox3 (b) { } 00062 00070 csOBB (const csVector3 &dir1, const csVector3 &dir2, 00071 const csVector3 &dir3); 00072 00073 void AddBoundingVertex (const csVector3 &v); 00074 csVector3 GetCorner (int corner) const; 00075 inline const csMatrix3 &GetMatrix () const { return mMat; } 00076 00080 float Diameter (); 00081 00085 float Volume (); 00086 00092 void FindOBB (const csVector3 *vertex_table, int num, float eps = 0.0); 00093 00099 void FindOBBAccurate (const csVector3 *vertex_table, int num); 00100 }; 00101 00105 class CS_CRYSTALSPACE_EXPORT csOBBFrozen 00106 { 00107 private: 00108 csVector3 corners[8]; 00109 00110 public: 00114 inline void Copy (const csOBB& obb) 00115 { 00116 for (int i = 0 ; i < 8 ; i++) 00117 { 00118 corners[i] = obb.GetCorner (i); 00119 } 00120 } 00121 00125 void Copy (const csOBB& obb, const csReversibleTransform& trans); 00126 00130 csOBBFrozen () 00131 { 00132 } 00133 00137 csOBBFrozen (const csOBB& obb) 00138 { 00139 Copy (obb); 00140 } 00141 00148 csOBBFrozen (const csOBB& obb, const csReversibleTransform& trans) 00149 { 00150 Copy (obb, trans); 00151 } 00152 00156 inline const csVector3& GetCorner (int corner) const 00157 { 00158 CS_ASSERT (corner >= 0 && corner < 8); 00159 return corners[corner]; 00160 } 00161 00166 bool ProjectOBB (float fov, float sx, float sy, csBox2& sbox, 00167 float& min_z, float& max_z); 00168 }; 00169 00172 #endif // __CS_OBB_H__ 00173
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