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/*
* ElipseBrush.h
*
* Created on: Jan 26, 2012
* Author: Simon
*/
#ifndef ELIPSEBRUSH_H_
#define ELIPSEBRUSH_H_
#include "Brush.h"
class EllipseBrush: public Brush
{
public:
EllipseBrush(ui::Point size_):
Brush(size_)
{
};
//Draw the brush outline onto the screen
virtual void RenderPoint(Graphics * g, ui::Point position)
{
if(!bitmap)
GenerateBitmap();
//g->fillrect(position.X-size.X-1, position.Y-size.Y-1, (size.X*2)+2, (size.Y*2)+2, 255, 0, 255, 70);
for(int x = 0; x <= size.X*2; x++)
{
for(int y = 0; y <= size.Y*2; y++)
{
if(bitmap[y*(size.X*2)+x])
g->blendpixel(position.X-size.X+x, position.Y-size.Y+y, 255, 0, 255, 70);
}
}
}
virtual void GenerateBitmap()
{
if(bitmap)
free(bitmap);
bitmap = (bool *)malloc(sizeof(bool)*(((size.X*2)+1)*((size.Y*2)+1)));
int rx = size.X;
int ry = size.Y;
for(int x = 0; x <= size.X*2; x++)
{
for(int y = 0; y <= size.Y*2; y++)
{
if((pow(x-size.X,2)*pow(ry,2)+pow(y-size.Y,2)*pow(rx,2)<=pow(rx,2)*pow(ry,2)))
{
bitmap[y*(size.X*2)+x] = true;
}
else
{
bitmap[y*(size.X*2)+x] = false;
}
}
}
}
};
#endif /* ELIPSEBRUSH_H_ */
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