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comparison nodejs/animate.js @ 727:468cd504800c

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Rewrite the animation as a module.
author wycc
date Tue, 17 Aug 2010 05:15:50 +0800
parents
children a843f147c995
comparison
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726:d479f319d7b7 727:468cd504800c
1 var sys=require("sys");
2
3 function linear_draw() {
4 if (this.end == 1) return;
5 var percent = (Date.now() - this.starttime)/this.duration;
6 if (percent > 1) percent = 1;
7 this.obj[5] = (this.target-this.startpos)*percent+this.startpos;
8 this.app.refresh();
9 var self = this;
10 if (percent < 1) {
11 this.obj.timer=setTimeout(function() { self.draw();}, 20);
12 return;
13 }
14 this.app.refresh();
15 this.obj.animated_linear = null;
16 }
17 function linear(app,obj,target,duration) {
18 try {
19 if (obj.animated_linear) {
20 obj[5] = obj.animated_linear.target;
21 obj.animated_linear.end = 1;
22 }
23 } catch(e) {
24
25 }
26 obj.animated_linear = this;
27 this.app = app;
28 this.obj = obj;
29 this.end = 0;
30 this.starttime = Date.now();
31 this.startpos = obj[5];
32 this.target = target;
33 this.duration = duration*1000;
34 }
35
36
37 exports.linear = linear;
38 linear.prototype.start = linear_draw;
39 linear.prototype.draw = linear_draw;