• Adobe After Effects Expressions

  dynamic wiggler not so dynamic

  Posted by Darren Hardaway on June 4, 2009 at 5:47 am

  Ok, I’m not sure what I’m doing wrong, but I got this wiggler expression I made to work on any comp size, but wiggle() won’t accept the values I’m trying to use. The only thing I can think of is I’m not restricting wiggle() correctly, but I proved that wasn’t it. here it is:

  width=thisComp.width/2;
  height=thisComp.height/2;
  freq=2;
  w=wiggle;
  x=w(freq,width)[0];
  y=w(freq,height)[1];
  [x,y]

  I didn’t move the object at all, just wrote this on position of a NTSC standard comp size and it only wiggles about 10 pixels u/d l/r
  So I tried this:

  width=360;
  height=240;
  freq=2;
  w=wiggle;
  x=w(freq,width)[0];
  y=w(freq,height)[1];
  [x,y]

  and that doesn’t work, but this works like a charm:

  freq=2;
  w=wiggle;
  x=w(freq,360)[0];
  y=w(freq,240)[1];
  [x,y]

  x_x how can I get it to let me use the comp’s size values to affect the wiggle?

  Darren

  Darren Hardaway replied 16 years, 11 months ago 2 Members · 2 Replies
• 2 Replies

• 

  Koby Goldberg

  June 4, 2009 at 7:00 am

  You are having a problem because your variables: width and height are reserved words…
  They represent the width and height of the layer…
  Give your variables different names, and it should work !

  Something like:
  wid=thisComp.width/2;
hei=thisComp.height/2;
freq=2;
w=wiggle;
x=w(freq,wid)[0];
y=w(freq,hei)[1];
[x,y]

  Koby.
• 

  Darren Hardaway

  June 4, 2009 at 4:57 pm

  hahaha that makes sense. Thats nice to know that you can call the layer’s width and height like that, and its logical. Thanks for the help!

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