fullscreen int a =0;
void setup () {
size (400, 400);
noStroke ();
smooth ();
}
void draw () {
background (255);
stroke (0, random (255));
if (mousePressed){
for (int x = 0; x < width; x = x+1){
line (x,0,x,height);
}}else{
fill (0);
rect (0,0,width, height);
}
}