• Adobe After Effects Expressions

  Change colour with position using wiggle expression

  Posted by Scott Green on July 8, 2015 at 10:43 am

  I’m using a wiggle expression to change the Y position of a coloured bar that’s inside a thermometer graphic that goes up and down.

  

  And I’d like it if the higher the temperature goes it turns red and the lower it is it turns blue.

  How can I achieve this?

  Thanks.

  Splurj Creative, Video Production, Motion Graphics & Animation in Manchester UK.

  Dan Ebberts replied 10 years, 10 months ago 2 Members · 1 Reply
• 1 Reply

• 

  Dan Ebberts

  July 8, 2015 at 6:43 pm

  Something like this should work for fill color:

  maxTempY = 100;
  minTempY = 500;
  maxTempColor = [1,0,0,1]; // red
  minTempColor = [0,0,1,1]; // blue
  y = position[1];
  linear(y,maxTempY,minTempY,maxTempColor,minTempColor)

  Dan

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