After Effects Custom FUI - Radar Set Up - Part 3

[@sameenshaw7168]

ı dont understand fading expressions part you add extra slider effect and you dont show what are you doing.

[@k-motion-tutorials]

It's a number of sliders "feeding" values into each other. Main animation slider goes from 0 to 1. Linear expression on Shape layer size animates circle from 0 to 400. Then Stroke property uses size value to change stroke from 10 to 0 over time with linear() expression. Thats the simple way. I added extra sliders to calculate how quickly "fade" happens on a stroke - for example stroke goes from 10 to 0, when circle is at 350px and not from 0px. This way circle is at full stroke at the beginning, and fade happens towards the end of the motion. All the extra sliders are not 100% necessary - I wanted to have extra functionality on 1 Null, instead of changing expressions by hand.