• Adobe After Effects Expressions

  Expression Error!!

  Posted by Naveen Prasanth on November 15, 2009 at 2:00 pm

  I was working with AE last night with an expression,the purpose of this expression,was simply for the background layer to have the opposite color of a shape layer.First, I hooked up three slider control effects to a null and renamed them each as red,green,blue.Then i made the expression in the shape layer’s fill property as,
  red = thisComp.layer(“Null 1”).effect(“red”)(“Slider”);
  green = thisComp.layer(“Null 1”).effect(“green”)(“Slider”);
  blue = thisComp.layer(“Null 1”).effect(“blue”)(“Slider”);
  alpha = 1;
  [red,green,blue,alpha]
  This worked out fine, i also added the wiggle expression to the sliders and everything went well until when i wanted the background layer to have the opposite color the shape layer and so here is the expression
  red = thisComp.layer(“Null 1”).effect(“red”)(“Slider”);
  green = thisComp.layer(“Null 1”).effect(“green”)(“Slider”);
  blue = thisComp.layer(“Null 1”).effect(“blue”)(“Slider”);
  alpha = 1;
  hsl = rgbToHsl([red,green,blue,alpha)];
  hsl[0] += .5;
  if (hsl[0]>1) (hsl[0] -= 1);
  rgb = hslToRgb(hsl);
  rgb

  Naveen Prasanth replied 16 years, 6 months ago 2 Members · 2 Replies
• 2 Replies

• 

  Xinlai Ni

  November 15, 2009 at 4:22 pm

  Is this because you have a ([… )] mismatch in the rgtToHsl line?

  Xinlai Ni
  Software Engineer, Google Inc.
• 

  Naveen Prasanth

  November 16, 2009 at 2:54 am

  Thank u Xilnai didn’t notice that bugger! I will try rectifying it!!

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