window.addEventListener("load", init);
function init() {
var stage = new createjs.Stage("myCanvas");
//
var ball = new createjs.Shape();
ball.graphics.beginFill('#888888').drawCircle(0, 0, 30);
ball.x = stage.canvas.width / 2; // 画面中央に配置
ball.y = stage.canvas.height / 2;
stage.addChild(ball);
var angle = 0;
var centerScale = 1.0;
var range = 0.5;
var speed = .1;
// 時間経過
createjs.Ticker.addEventListener("tick", handleTick);
function handleTick() {
// スケールを変化
ball.scaleX = ball.scaleY = centerScale + Math.sin(angle) * range;
angle += speed;
stage.update();
}
createjs.Ticker.timingMode = createjs.Ticker.RAF;
}
