createCanvas(400, 400);

  strokeWeight(10);

  noFill();

}

​

var hit = false;

​

function draw() {

    background(255);

​

    rect(200, 200, 100, 150);

    circle(mouseX, mouseY, 100);

​

    hit = collideRectCircle(200, 200, 100, 150, mouseX, mouseY, 100);

​

    //stroke(hit ? color('yellow') : 0);

    //print('colliding?', hit);

    if(hit){ 

        stroke('red');

    }else{

        stroke('yellow');

    }

}