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GrayscaleDecorator.h
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GrayscaleDecorator.h
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//Tyler Morgan
//UW CPP Qtr 3 Assignment 4
//GrayscaleDecorator.h
//
#pragma once
#include "IBitmapIterator.h"
class GrayscaleDecorator: public IBitmapIterator
{
public:
GrayscaleDecorator(const HBitmapIterator& originalIterator)
:myOriginalIterator(originalIterator) { }
virtual void nextScanLine()
{
myOriginalIterator->nextScanLine();
}
virtual bool isEndOfImage() const
{
return myOriginalIterator->isEndOfImage();
}
virtual void nextPixel()
{
myOriginalIterator->nextPixel();
}
virtual bool isEndOfScanLine() const
{
return myOriginalIterator->isEndOfScanLine();
}
virtual Color getColor() const
{
Color originalColor = myOriginalIterator->getColor();
int averageItensity = (originalColor.getRed() +
originalColor.getBlue() +
originalColor.getGreen()) /3;
return Color(averageItensity,averageItensity,averageItensity);
}
virtual int getBitmapWidth() const
{
return myOriginalIterator->getBitmapWidth();
}
virtual int getBitmapHeight() const
{
return myOriginalIterator->getBitmapHeight();
}
private:
HBitmapIterator myOriginalIterator;
};