createjs转换坐标+碰撞事件1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<script src="https://code.createjs.com/easeljs-0.8.2.min.js"></script>
</head>
<body>
<canvas id="demoCanvas" width="500" height="300"></canvas>
<script>
var stage, arm;
window.onload = function(){
stage = new createjs.Stage("demoCanvas");
target = stage.addChild(new createjs.Shape());
target.graphics.beginFill("red").drawCircle(0, 0 ,45)
.beginFill("white").drawCircle(0,0,30)
.beginFill("red").drawCircle(0,0,15);
target.x = 100;
target.y = 180;
arm = stage.addChild(new createjs.Shape());
arm.graphics.beginFill("black").drawRect(-2,-2,100,4)
.beginFill("blue").drawCircle(100,0,8);
arm.x = 180;
arm.y = 100;
createjs.Ticker.on("tick", tick);
}
function tick(){
arm.rotation += 5;
target.alpha = 0.2;
var pt = arm.localToLocal(100, 0, target);
if (target.hitTest(pt.x, pt.y)){target.alpha = 1;}
stage.update();
}
</script>
</body>
</html>