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icekomo

relative vs absolute values in GSAP Flash Pro CC 2015

Warning: Please note

This thread was started before GSAP 3 was released. Some information, especially the syntax, may be out of date for GSAP 3. Please see the GSAP 3 migration guide and release notes for more information about how to update the code to GSAP 3's syntax. 

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I've been catching back up with Flash Pro and Greensock using the new Canvas and WebGL file formats. One thing I noticed is when I try to use relative numbers with Greensock I get unexpected results.

 

In AS3 I would have use something like this

TweenLite.to(mc, 1, {x:"500"});

and the mc would have moved 500px to the right of where it was sitting on the stage.

 

When I use the same piece of code in Flash Pro in JS instead of AS3

TweenLite.to(this.mc, 1, {x:"500"});

The mc seems to move to a location that is far more then 500px and not always in the direction that I thought it would move..

 

Since I'm using Flash Pro I'm not sure I can recreate this in codepen?

 

Again this might be an issue with CreateJs and not GSAP.

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I don't know how it worked in AS, but a string does not make it relative. Those values will be parsed into an absolute value. Try these...

// Increase
TweenLite.to(mc, 1, {x:"+=500"});

// Decrease
TweenLite.to(mc, 1, {x:"-=500"});
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