• Adobe After Effects Expressions

  Changing font color using expressions for Poker

  Posted by Gabriel Netto on March 10, 2010 at 2:22 pm

  I’m an expressions newby so…
  Could someone help me with this question?

  I’m working on a CARD project based on 4 variables (CS3). As you will see they are on an external txt and code is located on a text layer. I’m using “Hoyle Playing Cards” font symbols and that’s why they need to change: s = “q” (s for spades is q character, etc.)

  My problem is that I need to alternate between red and black font colors. (spades and hearts have to be red, spades and clubs have to be black) but I just can’t figure out how to change this colors using expressions… I’ve tried to use fill but I don’t know how to set it’s color property via expressions.

  Maybe a Color Control or a sampleImage() effect?

  Any help is really appreciated!!!
  Thanks in advance!
  Gabriel Netto

  //Here's my code:

  s = "q";
c = "w";
d = "e";
h = "r";
eval(thisComp.layer("LER_TXT").text.sourceText.value);
myPath = "/MyHD/Prog1.txt";
try{
$.evalFile (myPath);
eval(thisComp.name)[1];
}catch (err){
"not found"
}

  Dan Ebberts replied 16 years, 2 months ago 2 Members · 3 Replies
• 3 Replies

• 

  Dan Ebberts

  March 10, 2010 at 4:10 pm

  If your text color is black, you should be able to add a color animator (leave the color set to red), add an Expression Selector to that, delete the Range Selector and add an expression like this to the Expression Selector:

  t = text.sourceText.value[textIndex-1];
  if (t == “e” || t == “r”) 100 else 0

  Dan
• 

  Gabriel Netto

  March 11, 2010 at 3:39 pm

  Thank you very much Dan!
  I’m a great fan of your work!

  I’ve tried the method you proposed but I get a “Class ‘Layer’ has no property or method named ‘textindex'” warning.

  I would love to know what I’m doing wrong… (Excuse my ignorance. I’m really a newby and this is my second -serious- approach to expressions)

  (I’ve placed the expression in Animator 1- Fill color and deleted the Range selector)

  But I thought on another “dirty” way to solve this. I’ve used a Fill filter on my code text layer and linked the other two layers (number and symbol) to it. Then I used code below. It’s working but as I said before it would be great to understand your method… Thanks again!

  Gabriel
  https://www.andar7.com

  h = [1, 0, 0, 1];
d = [1, 0, 0, 1];
s = [0, 0, 0, 1];
c = [0, 0, 0, 1];
eval(thisComp.layer("LER_TXT").text.sourceText.value);

• 

  Dan Ebberts

  March 11, 2010 at 6:20 pm

  Try textIndex with a capital “I”.

  Dan

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