forked from tweenjs/tween.js
-
Notifications
You must be signed in to change notification settings - Fork 1
/
07_dynamic_to.html
127 lines (91 loc) · 2.67 KB
/
07_dynamic_to.html
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
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
<!DOCTYPE html>
<html lang="en">
<head>
<title>Tween.js / dynamic to</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<style>
body {
margin: 0px;
}
#target {
font-size: 13px;
padding: 0px 32px;
}
</style>
<link href="css/style.css" media="screen" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="info" style="position: relative;">
<h1><a href="http://github.com/tweenjs/tween.js">tween.js</a></h1>
<h2>07 _ dynamic to</h2>
<p>tweening towards a moving target</p>
</div>
<div id="target"></div>
<script src="../src/Tween.js"></script>
<script src="js/RequestAnimationFrame.js"></script>
<script>
init();
animate();
function init() {
var width = 480;
var height = 320;
var target = document.getElementById('target');
var canvas = document.createElement( 'canvas' );
canvas.width = width;
canvas.height = height;
target.appendChild( canvas );
var context = canvas.getContext( '2d' );
var rabbit = { x: width - 50, y: 50 };
new TWEEN.Tween( rabbit ).to( { x: width - 50, y: height - 50 }, 3000 ).onUpdate( function(object) {
// draw background
context.fillStyle = "rgb(240,250,240)";
context.fillRect( 0, 0, width, height );
// draw rabbit
context.fillStyle = "rgb(150,150,150)";
context.save();
context.translate( object.x, object.y );
context.beginPath();
context.moveTo( 0, 0 );
context.bezierCurveTo( 15, 0, 15, -40, 5, -30 );
context.lineTo( 0, 0 );
context.bezierCurveTo( -15, 0, -15, -40, -5, -30 );
context.lineTo( 0, 0 );
context.fill();
context.beginPath();
context.arc( 0, 0, 15, 0, Math.PI * 2, true );
context.fill();
context.restore();
} ).start();
var fox = { x: 50, y: 50 };
new TWEEN.Tween( fox ).to( rabbit, 3000 ).onUpdate( function(object) {
// draw fox
context.fillStyle = "rgb(200,80,80)";
context.save();
context.translate( object.x, object.y - 13 );
context.scale( 1.2, 1.2 );
context.beginPath();
context.moveTo( 4, 24 );
context.lineTo( 8, 16 );
context.lineTo( 14, 10 );
context.lineTo( 15, 0 );
context.lineTo( 9, -10 );
context.lineTo( 2, 0 );
context.lineTo( -2, 0 );
context.lineTo( -9, -10 );
context.lineTo( -15, 0 );
context.lineTo( -14, 10 );
context.lineTo( -8, 16 );
context.lineTo( -4, 24 );
context.closePath();
context.fill();
context.restore();
} ).start();
}
function animate( time ) {
requestAnimationFrame( animate );
TWEEN.update( time );
}
animate();
</script>
</body>
</html>