They will update their output every frame without user input. The reason to use Expressions is that they are dynamic. General information about Expressions Expressions and your cacheĮxpressions are code-snippets that can read out a state or a value of your composition or of the Tools inside. Circular movement using sin() and cos().Getting User Data (like Font) in a simple Expression.Show your MetaData with style (Line breaks and more formatting).Convert to an integer with math.floor, math.ceil.Get Maximum or Minimum of different values.

iif() Expression to toggle Vector Motion Blur.

Access a single value of a Position Input.

It will be quite a bit of knowledge that I dump onto you at once, but if you know (and understand) these things you will know more about Expressions than most intermediate users. (I recently published a blog post about using the Expression Modifier to blend between positions here.) I am trying to slowly increase the difficulty of the explained Expressions so you can learn them step by step.īut first, if you are somewhat new to Fusion (or not that deep into Expressions) the next two topics are for you. This does not mean that you need a master’s degree in expressionisms to understand what we’re doing, it simply means that I am not covering the Expression Modifier or Scripting in this blog post.

It is the name that Blackmagic/Eyeon gave the kind of Expression that you can use by right-clicking a tool’s parameter and hitting “Expression”. The “Simple” in “Simple Expressions” does not stand for easy. But let me get one confusion out of the way. I will collect some Expressions that I find helpful and explain what is happening. If you know what you’re doing or don’t care about background information you can click here to jump straight to the first Expression example.

Fusion 9 blackmagic