• Adobe After Effects

  Expression to pick one of six values based on slider

  Posted by James Archibald on November 11, 2014 at 11:34 am

  Hey everyone, this feels like it should be a simple one, and it’s definitely something I’ve achieved before but I’ve sort of tangled myself up and can’t quite see where to go.

  I have a slider that is outputting a value between 1 and 6 based on a wiggle:
  w = wiggle(6,4);
  Math.max(1,Math.min(6,w)).toFixed(0)

  I have 6 nulls in 3D space.

  I then have my effect which I want to wiggle between these nulls based on the slider’s “dice roll”. So far I have defined my variables, but I can’t think how to format the expression in order to achieve this.
  This is how far I’ve gotten:
  dice = effect(“Zap Roll”)(“Slider”);
  t1 = thisComp.layer(“Edge Zap Target 1”).transform.position;
  t2 = thisComp.layer(“Edge Zap Target 2”).transform.position;
  t3 = thisComp.layer(“Edge Zap Target 3”).transform.position;
  t4 = thisComp.layer(“Edge Zap Target 4”).transform.position;
  t5 = thisComp.layer(“Pylon 1 – Top”).transform.position;
  t6 = thisComp.layer(“Pylon 1 – Bot”).transform.position;

  if (dice=1) t1

  So if dice=2, the effect value should be t2, etc.

  Any help would be greatly appreciated.

  • Archie •

  James Archibald replied 11 years, 8 months ago 51,579 Members · 1 Reply
• 1 Reply

• 

  James Archibald

  November 11, 2014 at 11:48 am

  Derp, sorted it. Knew it was simple, sorry, folks.

  dice = effect(“Zap Target”)(“Slider”);
  t1 = thisComp.layer(“Edge Zap Target 1”).transform.position;
  t2 = thisComp.layer(“Edge Zap Target 2”).transform.position;
  t3 = thisComp.layer(“Edge Zap Target 3”).transform.position;
  t4 = thisComp.layer(“Edge Zap Target 4”).transform.position;
  t5 = thisComp.layer(“Pylon 1 – Top”).transform.position;
  t6 = thisComp.layer(“Pylon 1 – Bot”).transform.position;

  if (dice==1) t1
  else if (dice==2) t2
  else if (dice==3) t3
  else if (dice==4) t4
  else if (dice==5) t5
  else if (dice==6) t6

  • Archie •

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