juce_PathIterator.h

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/*
  ==============================================================================
 
   This file is part of the JUCE library.
   Copyright (c) 2015 - ROLI Ltd.
 
   Permission is granted to use this software under the terms of either:
   a) the GPL v2 (or any later version)
   b) the Affero GPL v3
 
   Details of these licenses can be found at: www.gnu.org/licenses
 
   JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
   A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
 
   ------------------------------------------------------------------------------
 
   To release a closed-source product which uses JUCE, commercial licenses are
   available: visit www.juce.com for more information.
 
  ==============================================================================
*/
 
#ifndef JUCE_PATHITERATOR_H_INCLUDED
#define JUCE_PATHITERATOR_H_INCLUDED
 
 
//==============================================================================
class JUCE_API  PathFlatteningIterator
{
public:
    //==============================================================================
    PathFlatteningIterator (const Path& path,
                            const AffineTransform& transform = AffineTransform::identity,
                            float tolerance = defaultTolerance);
 
    ~PathFlatteningIterator();
 
    //==============================================================================
    bool next();
 
    float x1;  
    float y1;  
    float x2;  
    float y2;  
    bool closesSubPath;
 
    int subPathIndex;
 
    bool isLastInSubpath() const noexcept;
 
    static const float defaultTolerance;
 
private:
    //==============================================================================
    const Path& path;
    const AffineTransform transform;
    float* points;
    const float toleranceSquared;
    float subPathCloseX, subPathCloseY;
    const bool isIdentityTransform;
 
    HeapBlock <float> stackBase;
    float* stackPos;
    size_t index, stackSize;
 
    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (PathFlatteningIterator)
};
 
 
#endif   // JUCE_PATHITERATOR_H_INCLUDED