juce_ImageConvolutionKernel.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_IMAGECONVOLUTIONKERNEL_H_INCLUDED
#define JUCE_IMAGECONVOLUTIONKERNEL_H_INCLUDED
 
 
//==============================================================================
class JUCE_API  ImageConvolutionKernel
{
public:
    //==============================================================================
    ImageConvolutionKernel (int size);
 
    ~ImageConvolutionKernel();
 
    //==============================================================================
    void clear();
 
    float getKernelValue (int x, int y) const noexcept;
 
    void setKernelValue (int x, int y, float value) noexcept;
 
    void setOverallSum (float desiredTotalSum);
 
    void rescaleAllValues (float multiplier);
 
    void createGaussianBlur (float blurRadius);
 
    //==============================================================================
    int getKernelSize() const               { return size; }
 
    //==============================================================================
    void applyToImage (Image& destImage,
                       const Image& sourceImage,
                       const Rectangle<int>& destinationArea) const;
 
private:
    //==============================================================================
    HeapBlock <float> values;
    const int size;
 
    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ImageConvolutionKernel)
};
 
 
#endif   // JUCE_IMAGECONVOLUTIONKERNEL_H_INCLUDED