乱数課題
function setup(){
createCanvas(700,700);
}
function draw(){
background(300,250,random(10,300))
triangle(200,random(100,400),random(10,200),500,random(30,200),random(5,350))
ellipse(450,350,random(10,350))
fill(100,350,200,random(250,400))
stroke(100,300,random(200,300))
}