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include/cinder/Triangulate.h

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00001 /*
00002  Copyright (c) 2011, The Cinder Project: http://libcinder.org
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/Cinder.h"
00026 #include "cinder/TriMesh.h"
00027 #include "cinder/PolyLine.h"
00028 #include "cinder/Shape2d.h"
00029 #include "cinder/Path2d.h"
00030 
00031 struct TESStesselator;
00032 
00033 namespace cinder {
00034 
00036 class Triangulator {
00037   public:
00038     typedef enum Winding { WINDING_ODD, WINDING_NONZERO, WINDING_POSITIVE, WINDING_NEGATIVE, WINDING_ABS_GEQ_TWO } Winding;
00039 
00041     Triangulator();
00043     Triangulator( const Path2d &path, float approximationScale = 1.0f );
00045     Triangulator( const Shape2d &shape, float approximationScale = 1.0f );
00047     Triangulator( const PolyLine2f &polyLine );
00048 
00050     void        addShape( const Shape2d &path, float approximationScale = 1.0f );
00052     void        addPath( const Path2d &path, float approximationScale = 1.0f );
00054     void        addPolyLine( const PolyLine2f &polyLine );
00055 
00057     TriMesh2d       calcMesh( Winding winding = WINDING_ODD );
00058     
00059     class Exception : public ci::Exception {
00060     };
00061     
00062   protected:    
00063     void            allocate();
00064     
00065     int                                 mAllocated;
00066     std::shared_ptr<TESStesselator>     mTess;
00067 };
00068 
00069 } // namespace cinder