Cinder

00001 /*
00002  Copyright (c) 2010, The Barbarian Group
00003  All rights reserved.
00004 
00005  Redistribution and use in source and binary forms, with or without modification, are permitted provided that
00006  the following conditions are met:
00007 
00008     * Redistributions of source code must retain the above copyright notice, this list of conditions and
00009     the following disclaimer.
00010     * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and
00011     the following disclaimer in the documentation and/or other materials provided with the distribution.
00012 
00013  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
00014  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
00015  PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
00016  ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
00017  TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
00018  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00019  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
00020  POSSIBILITY OF SUCH DAMAGE.
00021 */
00022 
00023 #pragma once
00024 
00025 #include "cinder/TriMesh.h"
00026 #include "cinder/Stream.h"
00027 
00028 #include <boost/logic/tribool.hpp>
00029 #include <boost/tuple/tuple_comparison.hpp>
00030 #include <map>
00031 
00032 namespace cinder {
00033 
00045 class ObjLoader {
00046  public:
00050      ObjLoader( shared_ptr<IStream> aStream, bool includeUVs = true );
00051     ~ObjLoader();
00052 
00058     void    load( TriMesh *destTriMesh, boost::tribool loadNormals = boost::logic::indeterminate, boost::tribool loadTexCoords = boost::logic::indeterminate, bool optimizeVertices = true );
00063     void    load( size_t groupIndex, TriMesh *destTriMesh, boost::tribool loadNormals = boost::logic::indeterminate, boost::tribool loadTexCoords = boost::logic::indeterminate, bool optimizeVertices = true );
00064     
00065     struct Face {
00066         int                 mNumVertices;
00067         std::vector<int>    mVertexIndices;
00068         std::vector<int>    mTexCoordIndices;
00069         std::vector<int>    mNormalIndices;
00070     };
00071 
00072     struct Group {
00073         std::string             mName;
00074         int                     mBaseVertexOffset, mBaseTexCoordOffset, mBaseNormalOffset;
00075         std::vector<Face>       mFaces;
00076         bool                    mHasTexCoords;
00077         bool                    mHasNormals;
00078     };
00079     
00080  private:
00081     typedef boost::tuple<int,int> VertexPair;
00082     typedef boost::tuple<int,int,int> VertexTriple;
00083 
00084     void    parseFace( Group *group, const std::string &s, bool includeUVs );
00085     void    loadInternalNoOptimize( const Group &group, TriMesh *destTriMesh, bool texCoords, bool normals );
00086     void    loadInternalNormalsTextures( const Group &group, std::map<boost::tuple<int,int,int>,int> &uniqueVerts, TriMesh *destTriMesh );
00087     void    loadInternalNormals( const Group &group, std::map<boost::tuple<int,int>,int> &uniqueVerts, TriMesh *destTriMesh );
00088     void    loadInternalTextures( const Group &group, std::map<boost::tuple<int,int>,int> &uniqueVerts, TriMesh *destTriMesh );
00089     void    loadInternal( const Group &group, std::map<int,int> &uniqueVerts, TriMesh *destTriMesh );   
00090  
00091     shared_ptr<IStream>     mStream;
00092     std::vector<Vec3f>      mVertices, mNormals;
00093     std::vector<Vec2f>      mTexCoords;
00094     std::vector<Group>      mGroups;
00095 };
00096 
00097 } // namespace cinder
Cinder

include/cinder/ObjLoader.h
