function setup() {
    createCanvas(400, 400);
    stroke("#FFFF00");
    strokeWeight(8);
    angleMode(DEGREES);
    frameRate(60);
    noCursor();
}

function draw() {
    background("skyblue");
    // 移动原点坐标
    push();
    translate(mouseX, mouseY);
    const a = 1 + (frameCount % 30);
    // 画太阳
    fill("#FFCC00");
    circle(0, 0, 100);
    noFill();
    arc(-20, 0, 20, 20, -135, -45);
    arc(20, 0, 20, 20, -135, -45);
    arc(0, 10, 40, 40, 45, 135);
    // 画阳光
    for (let i = 0, n = 36; i < n; i++) {
        line(0, -60 - a * 10, 0, -80 - a * 10);
        rotate(360 / n);
    }
    pop();
}