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# include/cinder/Shape2d.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 "cinder/Vector.h"
    00026 #include "cinder/Rect.h"
    00027 #include "cinder/Path2d.h"
    00028
    00029 #include <vector>
    00030
    00031 namespace cinder {
    00032
    00033 class Shape2d {
    00034   public:
    00035     void    moveTo( const Vec2f &p );
    00036     void    moveTo( float x, float y ) { moveTo( Vec2f( x, y ) ); }
    00037     void    lineTo( const Vec2f &p );
    00038     void    lineTo( float x, float y ) { lineTo( Vec2f( x, y ) ); }
    00039     void    quadTo( const Vec2f &p1, const Vec2f &p2 );
    00040     void    quadTo( float x1, float y1, float x2, float y2 ) { quadTo( Vec2f( x1, y1 ), Vec2f( x2, y2 ) ); }
    00041     void    curveTo( const Vec2f &p1, const Vec2f &p2, const Vec2f &p3 );
    00042     void    curveTo( float x1, float y1, float x2, float y2, float x3, float y3 ) { curveTo( Vec2f( x1, y1 ), Vec2f( x2, y2 ), Vec2f( x3, y3 ) ); }
    00043     void    close();
    00044
    00045     bool    empty() const { return mContours.empty(); }
    00046     void    clear() { mContours.clear(); }
    00047     size_t  getNumContours() const { return mContours.size(); }
    00048
    00049     const Path2d&   getContour( size_t i ) const { return mContours[i]; }
    00050     Path2d&         getContour( size_t i ) { return mContours[i]; }
    00051
    00052     const Vec2f&    getCurrentPoint() const { return mContours.back().getCurrentPoint(); }
    00053
    00054     void            removeContour( size_t i ) { mContours.erase( mContours.begin() + i ); }
    00055
    00057     Rectf           calcBoundingBox() const;
    00058
    00060
    00064     template<typename IT>
    00065     void iterate( IT &it )
    00066     {
    00067         bool stop = false;
    00068         for( std::vector<Path2d>::const_iterator contourIt = mContours.begin(); contourIt != mContours.end(); ++contourIt ) {
    00069             size_t pt = 0;
    00070             for( std::vector<Path2d::SegmentType>::const_iterator segIt = contourIt->mSegments.begin(); segIt != contourIt->mSegments.end(); ++segIt ) {
    00071                 if( ! it( *segIt, &contourIt->mPoints[pt], ( pt > 0 ) ? &contourIt->mPoints[pt-1] : 0 ) ) {
    00072                     stop = true;
    00073                     break;
    00074                 }
    00075                 pt += Path2d::sSegmentTypePointCounts[*segIt];
    00076             }
    00077             if( stop ) break;
    00078             else if( contourIt->isClosed() ) {
    00079                 if( ! it( Path2d::CLOSE, contourIt->empty() ? NULL : &contourIt->mPoints[0], ( pt > 0 ) ? &contourIt->mPoints[pt-1] : 0 ) )
    00080                     break;
    00081             }
    00082         }
    00083     }
    00084
    00085   private:
    00086     std::vector<Path2d> mContours;
    00087 };
    00088
    00089 } // namespace cinder