• Adobe After Effects Expressions

  Color Transition between two Colors by Slider Control

  Posted by Sebastian Martinez on May 12, 2020 at 6:30 pm

  Dear Expression heroes,

  my fourth question within a few day – expression rocks:

  I want to change the fill of a Shape Layer by a Slider value from 0 to 100.

  The Slider Effect is on a Null objekt. But also two Color Control effects, one for the Sliders value at 0, the other for the value at 100.

  When animating the Slider between 0 and 100 the color change is supposed to be smooth.

  I gave it a try but there was error only:

  Col=thisComp.layer("Null 42").effect("Slider Control")("Slider");
color1=[thisComp.layer("Null 42").effect("Color 1")("Color")];
color2=[thisComp.layer("Null 42").effect("Color 2")("Color")];
linear (Col,0,100,color1,color2)

  Whats wrong?

  Thank you so much in advance,
  Sebastian

  Sebastian Martinez
  CGI-Designer
  Cologne, Germany
  AE, AI, PS, 3ds max, C4d

  Sebastian Martinez replied 6 years, 2 months ago 2 Members · 3 Replies
• 3 Replies

• 

  Andrei Popa

  May 12, 2020 at 6:55 pm

  I guess your only mistakes are the square brackets. You don’t need those, since the link to the color returns an array.

  Col=thisComp.layer("Null 42").effect("Slider Control")("Slider");
color1=thisComp.layer("Null 42").effect("Color 1")("Color");
color2=thisComp.layer("Null 42").effect("Color 2")("Color");
linear (Col,0,100,color1,color2)

  Andrei
  My Envato portfolio.
• 

  Sebastian Martinez

  May 12, 2020 at 6:59 pm

  Stupid me. Too much braketts. This works now:

  Col=thisComp.layer("Null 42").effect("Slider Control")("Slider");
color1=thisComp.layer("Null 42").effect("Color Control")("Color");
color2=thisComp.layer("Null 42").effect("Color Control 2")("Color");

  linear (Col,0,100,color1,color2)

  Anyhow, Thanks to all of you for helping out in this forum, especially Dan!

  Take care
  sebastian

  Sebastian Martinez
  CGI-Designer
  Cologne, Germany
  AE, AI, PS, 3ds max, C4d
• 

  Sebastian Martinez

  May 12, 2020 at 7:01 pm

  Andrei,

  yes, the square braketts where too much. I just found it out by myself.

  But thank you so much for replying!

  Respects
  Sebastian

  Sebastian Martinez
  CGI-Designer
  Cologne, Germany
  AE, AI, PS, 3ds max, C4d

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