Processing

void setup() {
size(500,500);
}

void draw()
{
if (mouseX>100 && mouseY>100){
fill(random(255),random(255),random(255));
quad(random(400), random(400),random(400),random(400),random(400),random(400),random(400),random(400));
rect(random(400), random(400), random(400), random(400));
triangle(random(400), random(400), random(400), random(400), random(400),random(400));
ellipse(random(400),random(400),random(100),random(100) );
}}