Expressions and Drivers

Math Expressions

ThisAny animatable actor property (color, radius, position, etc.) can be animated with a math expression (Similar to SFM's expression operators). The implementation is abased placeholder.on the high-performance exprtk library, which includes support for:

• Logical operators (and/or/not/etc.)

Conditions (if/ternary/etc.) Loops (for/while/etc.) Vectors

Inputs:

• value: The current value

time: The current time in seconds timeIndex: startOffset: timescale: duration:

Functions:

• All built-in exprtk functions

quat valueAt

Contrary to SFM's expression operators, PFM's math expressions cannot reference anything outside of the animation channel for the property it's assigned to. To create dependencies between properties, you need to use animation drivers instead.

 

Animation Drivers

This is a placeholder.