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include/cinder/TriMesh.h

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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 <vector>
00026 #include "cinder/Vector.h"
00027 #include "cinder/AxisAlignedBox.h"
00028 #include "cinder/DataSource.h"
00029 #include "cinder/DataTarget.h"
00030 #include "cinder/Matrix.h"
00031 
00032 namespace cinder {
00033 
00034 class TriMesh {
00035  public:
00036 
00037     void        clear();
00038     
00039     bool        hasNormals() const { return ! mNormals.empty(); }
00040     bool        hasTexCoords() const { return ! mTexCoords.empty(); }
00041 
00042     void        appendVertex( const Vec3f &v ) { mVertices.push_back( v ); }
00043     void        appendVertices( const Vec4d *verts, size_t num );
00044     void        appendNormal( const Vec3f &v ) { mNormals.push_back( v ); }
00045     void        appendNormals( const Vec4d *normals, size_t num );
00046     void        appendTexCoord( const Vec2f &v ) { mTexCoords.push_back( v ); }
00047     void        appendTriangle( size_t v0, size_t v1, size_t v2 )
00048     { mIndices.push_back( v0 ); mIndices.push_back( v1 ); mIndices.push_back( v2 ); }
00049 
00050     size_t      getNumIndices() const { return mIndices.size(); }
00051     size_t      getNumTriangles() const { return mIndices.size() / 3; }
00052     size_t      getNumVertices() const { return mVertices.size(); }
00053 
00055     void        getTriangleVertices( size_t idx, Vec3f *a, Vec3f *b, Vec3f *c ) const;
00056 
00057     const std::vector<Vec3f>&   getVertices() const { return mVertices; }
00058     const std::vector<Vec3f>&   getNormals() const { return mNormals; }
00059     const std::vector<Vec2f>&   getTexCoords() const { return mTexCoords; } 
00060     const std::vector<size_t>&      getIndices() const { return mIndices; }     
00061 
00063     AxisAlignedBox3f    calcBoundingBox() const;
00065     AxisAlignedBox3f    calcBoundingBox( const Matrix44f &transform ) const;
00066 
00067     void        read( DataSourceRef in );
00068     void        write( DataTargetRef out ) const;
00069     
00070  private:
00071     std::vector<Vec3f>      mVertices;
00072     std::vector<Vec3f>      mNormals;
00073     std::vector<Vec2f>      mTexCoords;
00074     std::vector<size_t>     mIndices;
00075 };
00076 
00077 } // namespace cinder