expressions Archives - WPXTen
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Cat’s tail on the preview is an animated path and I’ll show you how to loop it.

How to loop a path in After Effects?

Alt-click on the Path property and paste an expression below.

This expression works in the same way as a standard loop cycle expression below.

 

 

How to loop a path like “pingpong”?

Alt-click on the Path property and paste an expression below.

This expression works in the same way as a standard loop “pingpong” expression below.

 

How to hide a layer with a checkbox in After Effects?

  1. Add Checkbox Control to your layer and rename it to Show layer.
  2. Alt-click on the Opacity property and paste the expression below.

How does it work?

The checkbox control has to 2 possible values on and off which are equal 1 and 0. If you link opacity to a checkbox with a pick whip it will be equal 1 or 0. We multiply both values by 100 and get 100 (1×100) or 0 (0x100) instead.

Where can I use it?

This technique is widely used in After Effects templates, it helps other people to work faster with your project.

How to format numbers in After Effects?

    1. Create a text layer.
    2. Add a Slider Control to the text layer and rename it to Number.
    3. Alt-click on the Source Text property and paste the expressions below.

  1. Create 2 keyframes on the slider with 0 and 1000000 values.

How does it work?

The expression uses a regular expression to search for the number pattern and modifies it. You can learn more about regular expressions at https://en.wikipedia.org/wiki/Regular_expression

How to make a number bigger than 1,000,000?

Change the multiplier variable to 10, 100, etc.

How to change the dollar sign?

Change the prefix variable to any symbol, word or leave it blank like this “”.

How to add a word after the number?

Change the postfix variable.

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