public virtual void FillRectangle(int x1, int y1, int x2, int y2, Color color)
{
int _x1 = x1;
int _y1 = y1;
int _x2 = x2;
int _y2 = y2;
if (_x1 > _x2)
{
_x1 = x2;
_x2 = x1;
}
if (_y1 > _y2)
{
_y1 = y2;
_y2 = y1;
}
pixelBuffer.SetSubBuffer(color, _x1, _y1, _x2 - _x1, _y2 - _y1);
}
private unsafe PixelBuffer GetSubBufferOutside(int x, int y, int width, int height)
{
PixelBuffer retBuff = new PixelBuffer(width, height);
int sx = x;
int sy = y;
int sw = width;
int sh = height;
if (x < 0)
{
sx = 0;
sw += x;
}
else if ((x + width) > _width)
{
sw = _width - x;
}
if (y < 0)
{
sy = 0;
sh += y;
}
else if ((y + height) > _height)
{
sh = _height - y;
}
if (sw <= 0 || sh <= 0)
{
return(new PixelBuffer(width, height));
}
int defaultColor = 0;
fixed(int *src = _buffer)
{
int index = this.GetPixelBytesIndex(sx, sy, _width);
defaultColor = this.GetPixelColorByIndex(src, index);
}
fixed(int *dest = retBuff.InternalBuffer)
{
retBuff.SetBufferColor(dest, defaultColor);
}
using (PixelBuffer subBuff = this.GetSubBuffer(sx, sy, sw, sh))
{
int fx = 0;
int fy = 0;
if (x < 0)
{
fx = -x;
}
if (y < 0)
{
fy = -y;
}
retBuff.SetSubBuffer(subBuff, fx, fy);
}
return(retBuff);
}