image.h

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2015-2016 Mario Luzeiro <mrluzeiro@ua.pt>
 * Copyright (C) 2015-2020 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, you may find one here:
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * or you may search the http://www.gnu.org website for the version 2 license,
 * or you may write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 */

#ifndef IMAGE_H
#define IMAGE_H

#include <wx/string.h>

enum class IMAGE_OP
{
    RAW,
    ADD,
    SUB,
    DIF,
    MUL,
    AND,
    OR,
    XOR,
    BLEND50,
    MIN,
    MAX
};


enum class IMAGE_WRAP
{
    ZERO,  
    CLAMP, 
    WRAP   
};


enum class IMAGE_FILTER
{
    HIPASS,
    GAUSSIAN_BLUR,
    GAUSSIAN_BLUR2,
    INVERT_BLUR,
    CARTOON,
    EMBOSS,
    SHARPEN,
    MELT,
    SOBEL_GX,
    SOBEL_GY,
    BLUR_3X3,
};

struct S_FILTER
{
    signed char    kernel[5][5];
    unsigned int   div;
    unsigned char  offset;
};


class IMAGE
{
public:
    IMAGE( unsigned int aXsize, unsigned int aYsize );

    IMAGE( const IMAGE& aSrcImage );

    ~IMAGE();

    void Setpixel( int aX, int aY, unsigned char aValue );

    unsigned char Getpixel( int aX, int aY ) const;

    void Hline( int aXStart, int aXEnd, int aY, unsigned char aValue );

    void CircleFilled( int aCx, int aCy, int aRadius, unsigned char aValue );

    void CopyFull( const IMAGE* aImgA, const IMAGE* aImgB, IMAGE_OP aOperation );

    void Invert();

    void EfxFilter( IMAGE* aInImg, IMAGE_FILTER aFilterType );

    void EfxFilter_SkipCenter( IMAGE* aInImg, IMAGE_FILTER aFilterType, unsigned int aRadius );

    void SaveAsPNG( const wxString& aFileName ) const;

    void SetPixelsFromNormalizedFloat( const float* aNormalizedFloatArray );

    unsigned char* GetBuffer() const;

    unsigned int GetWidth() const { return m_width; }
    unsigned int GetHeight() const { return m_height; }

private:
    bool wrapCoords( int* aXo, int* aYo ) const;

    void plot8CircleLines( int aCx, int aCy, int aX, int aY, unsigned char aValue );

    unsigned char*  m_pixels;           
    unsigned int    m_width;            
    unsigned int    m_height;           
    unsigned int    m_wxh;              
    IMAGE_WRAP      m_wraping;          
};

#endif   // IMAGE_H