dilatemodifier.cpp

// © Copyright 2010 - 2016 BlackTopp Studios Inc.
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/*
 -----------------------------------------------------------------------------
 This source file is part of ogre-procedural

 For the latest info, see http://code.google.com/p/ogre-procedural/

 Copyright (c) 2010-2013 Michael Broutin

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
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 furnished to do so, subject to the following conditions:

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 -----------------------------------------------------------------------------
 */
#ifndef _graphicsproceduraldilatemodifier_cpp
#define _graphicsproceduraldilatemodifier_cpp

#include "Graphics/Procedural/Texture/dilatemodifier.h"

namespace Mezzanine
{
    namespace Graphics
    {
        namespace Procedural
        {
            DilateModifier::DilateModifier() :
                NumIterations(10)
                {  }

            DilateModifier::~DilateModifier()
                {  }

            ///////////////////////////////////////////////////////////////////////////////
            // Utility

            void DilateModifier::Modify(TextureBuffer& Buffer)
            {
                Integer Width = static_cast<Integer>( Buffer.GetWidth() );
                Integer Height = static_cast<Integer>( Buffer.GetHeight() );
                TextureBuffer IntBuffer( Buffer );
                TextureBuffer DestBuffer( Buffer );

                TextureBuffer* pSrc = NULL;
                TextureBuffer* pDest = NULL;

                for( Integer CurrIteration = 0 ; CurrIteration < static_cast<Integer>( this->NumIterations ) ; ++CurrIteration )
                {
                    if( CurrIteration == 0 ) {
                        pSrc = &Buffer;
                    }else{
                        pSrc = ( (CurrIteration % 2) != (this->NumIterations % 2) ) ? &DestBuffer : &IntBuffer;
                    }
                    pDest = ( (CurrIteration % 2) == (this->NumIterations % 2) ) ? &DestBuffer : &IntBuffer;

                    for( Integer Y = 0 ; Y < Height ; ++Y )
                    {
                        for( Integer X = 0 ; X < Width ; ++X )
                        {
                            Integer Sum = -1;
                            pDest->SetPixel(X,Y,pSrc->GetPixel(X,Y));

                            for( Integer V = -1 ; V < 2 ; ++V )
                            {
                                for( Integer U = -1 ; U < 2 ; ++U )
                                {
                                    ColourValue Pixel = pSrc->GetPixel( ( X + Width + U ) % Width, ( Y + Height + V ) % Height );
                                    if( ( Pixel.RedChannel + Pixel.GreenChannel + Pixel.BlueChannel ) * 255.0 > Sum ) {
                                        Sum = static_cast<Integer>( ( Pixel.RedChannel + Pixel.GreenChannel + Pixel.BlueChannel ) * 255.0 );
                                        pDest->SetPixel(X,Y,Pixel);
                                    }
                                }
                            }
                        }
                    }
                }

                Buffer.SetData(DestBuffer);
            }

            String DilateModifier::GetName() const
                { return "DilateModifier"; }

            ///////////////////////////////////////////////////////////////////////////////
            // Configuration

            DilateModifier& DilateModifier::SetNumIterations(const UInt8 Iterations)
                { this->NumIterations = Iterations;  return *this; }
        }//Procedural
    }//Graphics
}//Mezzanine

#endif