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22
var x = 120;
var y = 60;
var radius = 12;
function setup() {
createCanvas(240, 120);
ellipseMode(RADIUS);
}
function draw() {
background(220);
var d = dist(mouseX, mouseY, x, y);
if (d < radius) {
radius++;
fill(0);
} else {
fill(255);
}
ellipse(x, y, radius, radius);
}