Formas

Primero:

void setup() {

 size(720, 480);

 ellipseMode(CENTER);

 rectMode(CENTER);

 //triangleMode(CENTER);

 strokeWeight(5);

}

void draw(){

 background(121, 145, 149);

fill(193, 70, 193);

stroke(145, 169, 132);

ellipse(350, 350, mouseX, mouseX);

fill(70, 118, 193);

stroke(145, 169, 132);

rect(400, 400, mouseX, mouseX);

fill(54, 152, 108);

stroke(145, 169, 132);

triangle(15,10,12, mouseX,mouseX,mouseX);

}