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# include/cinder/Path2d.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/BSpline.h"
    00027 #include "cinder/Rect.h"
    00028 #include <vector>
    00029
    00030 namespace cinder {
    00031
    00032 class Path2d {
    00033  public:
    00034     Path2d() : mClosed( false ) {}
    00035     explicit Path2d( const BSpline<Vec2f> &spline, float subdivisionStep = 0.01f );
    00036
    00037     void    moveTo( const Vec2f &p );
    00038     void    moveTo( float x, float y ) { moveTo( Vec2f( x, y ) ); }
    00039     void    lineTo( const Vec2f &p );
    00040     void    lineTo( float x, float y ) { lineTo( Vec2f( x, y ) ); }
    00041     void    quadTo( const Vec2f &p1, const Vec2f &p2 );
    00042     void    quadTo( float x1, float y1, float x2, float y2 ) { quadTo( Vec2f( x1, y1 ), Vec2f( x2, y2 ) ); }
    00043     void    curveTo( const Vec2f &p1, const Vec2f &p2, const Vec2f &p3 );
    00044     void    curveTo( float x1, float y1, float x2, float y2, float x3, float y3 ) { curveTo( Vec2f( x1, y1 ), Vec2f( x2, y2 ), Vec2f( x3, y3 ) ); }
    00045
    00046     void    close() { mClosed = true; }
    00047     bool    isClosed() const { return mClosed; }
    00048
    00049     bool    empty() const { return mSegments.empty(); }
    00050     void    clear() { mSegments.clear(); mPoints.clear(); }
    00051     size_t  getNumSegments() const { return mSegments.size(); }
    00052     size_t  getNumPoints() const { return mPoints.size(); }
    00053
    00054     const Vec2f&    getPoint( size_t point ) const { return mPoints[point]; }
    00055     const Vec2f&    getCurrentPoint() const { return mPoints.back(); }
    00056     void            setPoint( size_t index, const Vec2f &p ) { mPoints[index] = p; }
    00057
    00058     void            removeSegment( size_t segment );
    00059
    00060     enum SegmentType { MOVETO, LINETO, QUADTO, CUBICTO, CLOSE };
    00061     static const int sSegmentTypePointCounts[];
    00062     SegmentType     getSegmentType( size_t segment ) const { return mSegments[segment]; }
    00063
    00064     friend class Shape2d;
    00065
    00066  private:
    00067     bool                        mClosed;
    00068     std::vector<Vec2f>          mPoints;
    00069     std::vector<SegmentType>    mSegments;
    00070 };
    00071
    00072 } // namespace cinder