"Paint an angle" of a circle

Community Community & Industry Discussion
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1

First time ever using UE4 and posting here so I apologize if anything isn’t the way it’s supposed to be :slight_smile:

So essentially, what I’m trying to do here is to take an input from the range of 0 - 360 degrees and somehow paint that angle on a square.

an example:

alt text
alt text3070×1254 184 KB

Over the past 2 days i’ve tried thinking of anything that may work and came up with nothing I am able to implement so any ideas are more than welcome.
Doesn’t matter if it’s done by changing the material to the wanted color or placing a cylinder of that color and then changing it’s opacity at the angle or any other method as long as it works. Although, if you can, please do explain more than one method if possible as i’m very interested in learning this :slight_smile:

2

I’ve only ever used a material for something like this. Maybe someone else can chime in with other ways to accomplish it, but here’s a material that you can use for now.

67351-radialmaterial.jpg
67351-radialmaterial.jpg2559×761 280 KB

Use the AngleDegrees scalar parameter to set the angle of the circle.

Result with a texture mask applied:

67352-result.jpg
67352-result.jpg604×588 24.5 KB

Here’s a sample project if you’d like to see how it works.

Link: https://drive.google.com/uc?export=download&id=0Bwkk9IIFWMFbRlEwR2g5ZGc3cFk