How to uses a couple expressions

Moderators: Disciple, zlovatt

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senny2002
Posts: 2
Joined: October 30th, 2007, 11:40 am

basically,i just want to do something like this:
http://www.graymachine.com/content/inde ... 3&Itemid=1

How can i uses a couple expressions to control the stratingpoint and endingpoint in 3d space? the Beam effect only have xy value,so the Z value can`t control.is there any way to use expression control it?
Paul Tuersley
Posts: 704
Joined: June 5th, 2004, 7:59 am
Location: London, UK

You could create two 3D nulls and use expressions like this on Beam's Start and End properties:

Code: Select all

a = thisComp.layer("start null");
a.toComp(a.anchorPoint);
senny2002
Posts: 2
Joined: October 30th, 2007, 11:40 am

thanks,i get the point
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