Mercurial > MadButterfly
view nodejs/animate.js @ 728:a843f147c995
Add Y coordiante in the linear animation.
author | wycc |
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date | Tue, 17 Aug 2010 08:31:24 +0800 |
parents | 468cd504800c |
children | d11b0900f03c |
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var sys=require("sys"); function linear_draw() { if (this.end == 1) return; var percent = (Date.now() - this.starttime)/this.duration; if (percent > 1) percent = 1; this.obj[2] = (this.targetx-this.startposx)*percent+this.startposx; this.obj[5] = (this.targety-this.startposy)*percent+this.startposy; this.app.refresh(); var self = this; if (percent < 1) { this.obj.timer=setTimeout(function() { self.draw();}, 20); return; } this.app.refresh(); this.obj.animated_linear = null; } function linear(app,obj,targetx,targety,duration) { try { if (obj.animated_linear) { obj[5] = obj.animated_linear.target; obj.animated_linear.end = 1; } } catch(e) { } obj.animated_linear = this; this.app = app; this.obj = obj; this.end = 0; this.starttime = Date.now(); this.startposx = obj[2]; this.startposy = obj[5]; this.targetx = targetx; this.targety = targety; this.duration = duration*1000; } exports.linear = linear; linear.prototype.start = linear_draw; linear.prototype.draw = linear_draw;