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autoalpha problem

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as we all konw,autoalpha can tween alpha and visible.i have code as follows


import com.greensock.TweenMax;

import com.greensock.easing.*;



TweenMax.from(mc, 1, {autoAlpha:0,y:400})


but seems not work.if i remove mc.visible=false

mc.alpha=0 it works and tween alpha from 0 to 1

if i use tweenmax.to function it works well .

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Hi Teki. Welcome to the GreenSock Forums.


You are experiencing the expected behavior. Let me explain. When using a from() tween, you the developer are specifying the values you want your tween to start at.


TweenLite/Max use the objects current values as the ending values for the tween.


If an object has an x of 0, and you say TweenFrom -100. Well, the object will move FROM x:-100 (start vaiue) TO x:0 (end value).



When you put






into your code, you were setting the end values the same as your start values.


if an object has alpha 0, and you tween from alpha:0, there is no change in value.


What you want to do is just this


TweenMax.from(mc, 1, {autoAlpha:0})




mc.alpha = 0;
mc.visible = false;
TweenMax.to(mc, 1, {autoAlpha:1});




If you need more help let use know.

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