createCanvas(400, 400);

  rectMode(CENTER);

  createP(" Hello");

}

​

function draw() {

  background(200, 0, 100);

  fill(255, 0, 0 );

  rect(mouseX, mouseY, 80, 50);

  fill(0, 0, 255);

  triangle(mouseX, 75, mouseY, 20, 86, 75);

}