fullscreen boolean flip = false;
void setup ()
{ size( 500, 500 );
smooth();
background(255);
noStroke(); }
void draw ()
{
for ( float a = 0; a <= height; a=a+10 )
{
ellipse(width/2, height/2-a/2.5, width-a, height-a);
// translate(0,-8);
fill( 0 );
if(flip)
fill(255);
flip = !flip;
}
noLoop(); }