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 #include "cinder/Color.h"
00032 #include "cinder/Rect.h"
00033 
00034 namespace cinder {
00035     
00066 class TriMesh {
00067  public:
00068     
00069     void        clear();
00070     
00071     bool        hasNormals() const { return ! mNormals.empty(); }
00072     bool        hasColorsRGB() const { return ! mColorsRGB.empty(); }
00073     bool        hasColorsRGBA() const { return ! mColorsRGBA.empty(); }
00074     bool        hasTexCoords() const { return ! mTexCoords.empty(); }
00075 
00077     void        appendVertex( const Vec3f &v ) { mVertices.push_back( v ); }
00079     void        appendVertices( const Vec3f *verts, size_t num );
00081     void        appendVertices( const Vec4d *verts, size_t num );
00083     void        appendNormal( const Vec3f &v ) { mNormals.push_back( v ); }
00085     void        appendNormals( const Vec4d *normals, size_t num );
00087     void        appendColorRGB( const Color &rgb ) { mColorsRGB.push_back( rgb ); }
00089     void        appendColorRGBA( const ColorA &rgba ) { mColorsRGBA.push_back( rgba ); }
00091     void        appendTexCoord( const Vec2f &v ) { mTexCoords.push_back( v ); }
00092     
00096     void        appendTriangle( size_t v0, size_t v1, size_t v2 )
00097     { mIndices.push_back( v0 ); mIndices.push_back( v1 ); mIndices.push_back( v2 ); }
00099     void        appendIndices( uint32_t *indices, size_t num );
00100 
00102     size_t      getNumIndices() const { return mIndices.size(); }
00104     size_t      getNumTriangles() const { return mIndices.size() / 3; }
00106     size_t      getNumVertices() const { return mVertices.size(); }
00107 
00109     void        getTriangleVertices( size_t idx, Vec3f *a, Vec3f *b, Vec3f *c ) const;
00110 
00112     std::vector<Vec3f>&             getVertices() { return mVertices; }
00114     const std::vector<Vec3f>&       getVertices() const { return mVertices; }
00116     std::vector<Vec3f>&             getNormals() { return mNormals; }
00118     const std::vector<Vec3f>&       getNormals() const { return mNormals; }
00120     std::vector<Color>&             getColorsRGB() { return mColorsRGB; }
00122     const std::vector<Color>&       getColorsRGB() const { return mColorsRGB; }
00124     std::vector<ColorA>&            getColorsRGBA() { return mColorsRGBA; }
00126     const std::vector<ColorA>&      getColorsRGBA() const { return mColorsRGBA; }
00128     std::vector<Vec2f>&             getTexCoords() { return mTexCoords; }   
00130     const std::vector<Vec2f>&       getTexCoords() const { return mTexCoords; } 
00132     std::vector<uint32_t>&          getIndices() { return mIndices; }       
00134     const std::vector<uint32_t>&    getIndices() const { return mIndices; }     
00135 
00137     AxisAlignedBox3f    calcBoundingBox() const;
00139     AxisAlignedBox3f    calcBoundingBox( const Matrix44f &transform ) const;
00140 
00142     void        read( DataSourceRef in );
00144     void        write( DataTargetRef out ) const;
00145     
00146  private:
00147     std::vector<Vec3f>      mVertices;
00148     std::vector<Vec3f>      mNormals;
00149     std::vector<Color>      mColorsRGB;
00150     std::vector<ColorA>     mColorsRGBA;
00151     std::vector<Vec2f>      mTexCoords;
00152     std::vector<uint32_t>   mIndices;
00153 };
00154 
00155 class TriMesh2d {
00156  public:
00157     void        clear();
00158     
00159     bool        hasColorsRgb() const { return ! mColorsRgb.empty(); }
00160     bool        hasColorsRgba() const { return ! mColorsRgba.empty(); }
00161     bool        hasTexCoords() const { return ! mTexCoords.empty(); }
00162 
00164     void        appendVertex( const Vec2f &v ) { mVertices.push_back( v ); }
00166     void        appendVertices( const Vec2f *verts, size_t num );
00168     void        appendColorRgb( const Color &rgb ) { mColorsRgb.push_back( rgb ); }
00170     void        appendColorRgba( const ColorA &rgba ) { mColorsRgba.push_back( rgba ); }
00172     void        appendTexCoord( const Vec2f &v ) { mTexCoords.push_back( v ); }
00173     
00177     void        appendTriangle( size_t v0, size_t v1, size_t v2 )
00178     { mIndices.push_back( v0 ); mIndices.push_back( v1 ); mIndices.push_back( v2 ); }
00180     void        appendIndices( uint32_t *indices, size_t num );
00181     
00183     size_t      getNumIndices() const { return mIndices.size(); }
00185     size_t      getNumTriangles() const { return mIndices.size() / 3; }
00187     size_t      getNumVertices() const { return mVertices.size(); }
00188 
00190     void        getTriangleVertices( size_t idx, Vec2f *a, Vec2f *b, Vec2f *c ) const;
00191 
00193     std::vector<Vec2f>&             getVertices() { return mVertices; }
00195     const std::vector<Vec2f>&       getVertices() const { return mVertices; }
00197     std::vector<Color>&             getColorsRGB() { return mColorsRgb; }
00199     const std::vector<Color>&       getColorsRGB() const { return mColorsRgb; }
00201     std::vector<ColorA>&            getColorsRGBA() { return mColorsRgba; }
00203     const std::vector<ColorA>&      getColorsRGBA() const { return mColorsRgba; }
00205     std::vector<Vec2f>&             getTexCoords() { return mTexCoords; }   
00207     const std::vector<Vec2f>&       getTexCoords() const { return mTexCoords; } 
00209     std::vector<size_t>&            getIndices() { return mIndices; }       
00211     const std::vector<size_t>&      getIndices() const { return mIndices; }     
00212 
00214     Rectf   calcBoundingBox() const;
00215 
00216  private:
00217     std::vector<Vec2f>      mVertices;
00218     std::vector<Color>      mColorsRgb;
00219     std::vector<ColorA>     mColorsRgba;
00220     std::vector<Vec2f>      mTexCoords;
00221     std::vector<size_t>     mIndices;
00222 };
00223 
00224 } // namespace cinder