00001 /* 00002 ----------------------------------------------------------------------------- 00003 This source file is part of OGRE 00004 (Object-oriented Graphics Rendering Engine) 00005 For the latest info, see http://ogre.sourceforge.net/ 00006 00007 Copyright © 2000-2002 The OGRE Team 00008 Also see acknowledgements in Readme.html 00009 00010 This program is free software; you can redistribute it and/or modify it under 00011 the terms of the GNU Lesser General Public License as published by the Free Software 00012 Foundation; either version 2 of the License, or (at your option) any later 00013 version. 00014 00015 This program is distributed in the hope that it will be useful, but WITHOUT 00016 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 00017 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. 00018 00019 You should have received a copy of the GNU Lesser General Public License along with 00020 this program; if not, write to the Free Software Foundation, Inc., 59 Temple 00021 Place - Suite 330, Boston, MA 02111-1307, USA, or go to 00022 http://www.gnu.org/copyleft/lesser.txt. 00023 ----------------------------------------------------------------------------- 00024 */ 00025 #ifndef __PatchSurface_H__ 00026 #define __PatchSurface_H__ 00027 00028 #include "OgrePrerequisites.h" 00029 00030 #include "OgreVector3.h" 00031 #include "OgreGeometryData.h" 00032 #include "OgreString.h" 00033 00034 namespace Ogre { 00035 00042 class _OgreExport PatchSurface 00043 { 00044 public: 00045 PatchSurface(); 00046 ~PatchSurface(); 00047 00048 enum PatchSurfaceType 00049 { 00051 PST_BEZIER 00052 }; 00053 00055 enum 00056 { 00057 AUTO_LEVEL = -1 00058 }; 00059 00060 enum VisibleSide { 00062 VS_FRONT, 00064 VS_BACK, 00066 VS_BOTH 00067 }; 00090 void defineSurface(String meshName, const GeometryData& controlPoints, int width, 00091 PatchSurfaceType pType = PST_BEZIER, int subdivisionLevel = AUTO_LEVEL, 00092 VisibleSide visibleSide = VS_FRONT); 00093 00099 void build(void); 00100 00109 void setSubdivisionLevel(int level = AUTO_LEVEL); 00110 00121 Mesh* getMesh(void); 00122 protected: 00124 String mMeshName; 00126 GeometryData mCtlPointData; 00128 Mesh* mMesh; 00130 bool mNeedsBuild; 00132 PatchSurfaceType mType; 00134 int mCtlWidth; 00136 int mCtlHeight; 00138 int mULevel; 00140 int mVLevel; 00142 int mMeshWidth; 00144 int mMeshHeight; 00146 VisibleSide mVSide; 00147 00148 bool mSharedVertexData; 00149 bool mMemoryAllocated; 00150 00151 std::vector<Vector3> mVecCtlPoints; 00152 00153 // Steps for use in buffers 00154 int mBufPosStep, mBufNormStep, mBufColourStep, mBufTexCoordStep[OGRE_MAX_TEXTURE_COORD_SETS] ; 00155 00158 int findLevel( Vector3& a, Vector3& b, Vector3& c); 00159 00160 void allocateMemory(void); 00161 void deallocateMemory(void); 00162 void distributeControlPoints(void); 00163 void subdivideCurve(int startIdx, int stepSize, int numSteps, int iterations); 00164 void interpolateVertexData(int leftIndex, int rightIndex, int destIndex); 00165 void makeTriangles(void); 00166 00167 00168 00169 }; 00170 00171 00172 } // namespace 00173 00174 #endif
Copyright © 2002 by The OGRE Team