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/*
* Brush.h
*
* Created on: Jan 22, 2012
* Author: Simon
*/
#ifndef BRUSH_H_
#define BRUSH_H_
#include <iostream>
#include "interface/Point.h"
class Brush
{
protected:
unsigned char * outline;
unsigned char * bitmap;
ui::Point size;
ui::Point radius;
void updateOutline()
{
if(!bitmap)
GenerateBitmap();
if(!bitmap)
return;
if(outline)
free(outline);
outline = (unsigned char *)calloc(size.X*size.Y, sizeof(unsigned char));
for(int x = 0; x < size.X; x++)
{
for(int y = 0; y < size.Y; y++)
{
if(bitmap[y*size.X+x] && (!y || !x || y == size.X-1 || x == size.Y-1 || !bitmap[y*size.X+(x+1)] || !bitmap[y*size.X+(x-1)] || !bitmap[(y-1)*size.X+x] || !bitmap[(y+1)*size.X+x]))
outline[y*size.X+x] = 255;
else
outline[y*size.X+x] = 0;
}
}
}
public:
Brush(ui::Point size_):
bitmap(NULL),
outline(NULL),
radius(0, 0),
size(0, 0)
{
SetRadius(size_);
};
ui::Point GetRadius()
{
return radius;
}
void SetRadius(ui::Point radius)
{
this->radius = radius;
this->size = radius+radius+ui::Point(1, 1);
GenerateBitmap();
updateOutline();
}
virtual ~Brush() {
if(bitmap)
delete bitmap;
if(outline)
delete outline;
}
virtual void RenderRect(Graphics * g, ui::Point position1, ui::Point position2)
{
int width, height, t;
width = position2.X-position1.X;
height = position2.Y-position1.Y;
if(height<0)
{
position1.Y += height;
height *= -1;
}
if(width<0)
{
position1.X += width;
width *= -1;
}
g->xor_line(position1.X, position1.Y, position1.X+width, position1.Y);
g->xor_line(position1.X, position1.Y+height, position1.X+width, position1.Y+height);
g->xor_line(position1.X+width, position1.Y+1, position1.X+width, position1.Y+height-1);
g->xor_line(position1.X, position1.Y+1, position1.X, position1.Y+height-1);
}
virtual void RenderLine(Graphics * g, ui::Point position1, ui::Point position2)
{
g->xor_line(position1.X, position1.Y, position2.X, position2.Y);
}
//Draw the brush outline onto the screen
virtual void RenderPoint(Graphics * g, ui::Point position)
{
if(!outline)
updateOutline();
if(!outline)
return;
g->xor_bitmap(outline, position.X-radius.X, position.Y-radius.Y-1, size.X, size.Y);
}
virtual void GenerateBitmap()
{
if(bitmap)
free(bitmap);
bitmap = (unsigned char *)calloc((size.X*size.Y), sizeof(unsigned char));
for(int x = 0; x < size.X; x++)
{
for(int y = 0; y < size.Y; y++)
{
bitmap[(y*size.X)+x] = 255;
}
}
}
//Get a bitmap for drawing particles
unsigned char * GetBitmap()
{
if(!bitmap)
GenerateBitmap();
return bitmap;
}
unsigned char * GetOutline()
{
if(!outline)
updateOutline();
if(!outline)
return NULL;
return outline;
}
};
#endif /* BRUSH_H_ */
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