# is there a method to draw/fill a rounded rectangle?

• Funny, i would have thought BresenhamÂ´s would be a lot faster. It seems to be (i just checked in the emulator, not on the real hardware), but only below a radius of about 12. Most of the code is straight from Wikipedia, no optimization at all:

``````function bRoundedRectangle (x1,y1,x2,y2,r) {
var f = 1 - r;
var ddF_x = 0;
var ddF_y = -2 * r;
var x = 0;
var y = r;
g.drawLine(x1+r,y1,x2-r,y1);
g.drawLine(x1+r,y2,x2-r,y2);
g.drawLine(x1,y1+r,x1,y2-r);
g.drawLine(x2,y1+r,x2,y2-r);
var cx1=x1+r;
var cx2=x2-r;
var cy1=y1+r;
var cy2=y2-r;
while(x < y)
{
if(f >= 0)
{
y--;
ddF_y += 2;
f += ddF_y;
}
x++;
ddF_x += 2;
f += ddF_x + 1;
g.setPixel(cx2 + x, cy2 + y);
g.setPixel(cx1 - x, cy2 + y);
g.setPixel(cx2 + x, cy1 - y);
g.setPixel(cx1 - x, cy1 - y);
g.setPixel(cx2 + y, cy2 + x);
g.setPixel(cx1 - y, cy2 + x);
g.setPixel(cx2 + y, cy1 - x);
g.setPixel(cx1 - y, cy1 - x);
}
}
``````
• this code is more compact than mine and doesn't need Math.sin, at least - but I'd have to modify it in order to be able to draw and/or fill a rounded rectangle. Radii below 12 are certainly the most common ones.

Thanks a lot for this contribution!