Radial wipe using mask modifier I have an animation of a needle going from left to right. So as the needle Animates in a semi circle, the Mask follows the animation of the needle revealing the background image. The problem I'm having is, the mask is awkwardly animating, stalling, &amp; having parts of it delayed, the transition is not correct or smooth. I have a file to share which could make it easier to understand if someone can have a look at it.
Another way to do it would be to use the Screw modifier:

Create a simple edge, move it away from its origin:



Give it a Screw modifier, play with the Angle value: