催眠術
var time;
function setup() {
createCanvas(windowWidth,
windowHeight);
noFill();
time = 0.0;
}
function draw() {
background(234, 234, 234);
var num = 20;
for (var i = 0;i < num; i = i + 1) {
var R = i * (0 / num);
var G = 160 - i * (90 / num);
var B = 250 - i * (160 / num);
stroke(R, G, B);
var x = windowWidth / 2;
var y = windowHeight / 2;
var spX = 0.5 * i * windowWidth / num;
var spY = 0.5 * i * windowHeight / num;
// var dia = spX;
var dia = spX * sin(0.1 * i + time);
stamp(x, y, spX, spY, dia);
}
time = time + 50;
}
function stamp(x, y, spaceX, spaceY, diameter) {
ellipse(x - spaceX, y - spaceY, diameter);
ellipse(x - spaceX, y + spaceY, diameter);
ellipse(x + spaceX, y - spaceY, diameter);
ellipse(x + spaceX, y + spaceY, diameter);
}