• Adobe After Effects Expressions

  offset an expression by half second or so

  Posted by Todd Morgan on September 15, 2009 at 2:24 pm

  Hi,

  I have a scripted expression for a scale loop, but I want to offset the loop so that not all my layer objects are looping at the same time. I am an expression-idiot and haven’t had time to figure out the scripting.

  Thanks in advance for any help!

  period = 19;
maxVal = 105;
minVal = 100;

  f = 1/(period*thisComp.frameDuration);
  amp = (maxVal - minVal);
  s = amp*(Math.sin(f*time*Math.PI*2 - Math.PI/2) + 1)/2;

  value + [s,s]

  Kevin Camp replied 16 years, 11 months ago 2 Members · 1 Reply
• 1 Reply

• 

  Kevin Camp

  September 15, 2009 at 5:21 pm

  i think this will work

  period = 19;
maxVal = 105;
minVal = 100;
tOffset = .5; // time offset in seconds

  f = 1/(period*thisComp.frameDuration);
  amp = (maxVal - minVal);
  s = amp*(Math.sin(f*(time+tOffset*index)*Math.PI*2 - Math.PI/2) + 1)/2;

  value + [s,s]

  Kevin Camp
  Senior Designer
  KCPQ, KMYQ & KRCW

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