let x, y, r, g ,b;
function setup() {
createCanvas(windowWidth, windowHeight);
background(0);
}
function draw() {
//r = random(255);
//b = random(255);
//g = 0;
x = random(windowWidth);
y = random(windowHeight);
noStroke();
fill(r, g, b, 100);
circle(mouseX, mouseY ,50, 50, 10);
if (mouseX > windowWidth/2) {
r = random(255);
g = random(255);
b = random(255);
}
}