• Adobe After Effects Expressions

  multiple if else expressions

  Posted by Eman66 on July 29, 2020 at 6:26 pm

  Trying to automate color swap using color select

  looking to swap primary and secondary colors and also have the option to change either to a tertiary color

  This is what I have so far for the primary color.
  The second if statement negates the first. Believe I need something in between, but not sure what

  Any help is appreciated

  if (thisComp.layer("COLOR MASTER").effect("HOME SWAP")("Checkbox") == 0) {sampleImage([760,444],[1,1])} else
{
sampleImage([920,440],[1,1])
}
if (thisComp.layer("COLOR MASTER").effect("HOME PRI TO TER")("Checkbox") == 0) {sampleImage([760,444],[1,1])} else
{
sampleImage([930,536],[1,1])
}


  Thanks Man

  Eman66 replied 6 years, 2 months ago 2 Members · 4 Replies
• 4 Replies

• 

  Dan Ebberts

  July 29, 2020 at 8:03 pm

  For a multi-conditional structure, you need an if, followed by a number of else if statements, and finally, an else. So your example might look like this:

  
if (thisComp.layer("COLOR MASTER").effect("HOME SWAP")("Checkbox") == 1) {
sampleImage([920,440],[1,1]);
}else if (thisComp.layer("COLOR MASTER").effect("HOME PRI TO TER")("Checkbox") == 1) {
sampleImage([930,536],[1,1]);
}else{
sampleImage([760,444],[1,1]);
}

• 

  Eman66

  July 30, 2020 at 12:45 pm

  Thanks man. That was helpful

  Running into another issue.

  Checkbox works to swap primary and secondary colors and checkbox works to swap primary to tertiary….but if I swap primary and secondary….i’m unable to swap “new’ primary color with tertiary.

  Can there be a statement that says keep the initial swap and then add second swap?

  Hopefully I’m explaining this right

  Thanks in advance

  Thanks Man
• 

  Dan Ebberts

  July 30, 2020 at 2:05 pm

  I’m not sure what you’re asking. The expression can only have one result.

  Dan
• 

  Eman66

  July 31, 2020 at 2:06 pm

  Hey Dan

  Not sure I explained in properly

  Ended up figuring it out…needed to use && to make it work

  Final expression below

  Thanks

  target = thisComp.layer("HOME SWATCH");
if (thisComp.layer("COLOR MASTER").effect("HOME SWAP")("Checkbox") == 1 && thisComp.layer("COLOR MASTER").effect("HOME PRI TO TER")("Checkbox") == 1)
target.sampleImage([930,530],[1,1]) else
if (thisComp.layer("COLOR MASTER").effect("HOME SWAP")("Checkbox") == 1 && thisComp.layer("COLOR MASTER").effect("HOME PRI TO TER")("Checkbox") == 0)
target.sampleImage([930,450],[1,1]) else
if(thisComp.layer("COLOR MASTER").effect("HOME SWAP")("Checkbox") == 0 && thisComp.layer("COLOR MASTER").effect("HOME PRI TO TER")("Checkbox") == 1)
target.sampleImage([930,530],[1,1]) else
target.sampleImage([760,444],[1,1])

  Thanks Man

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