Hold 'E' GUI curved line, how can I do that?

[Roling7 (Crib)]

Hello! so I really like the style that they used in Jailbreak/Fortnite whenever you hold E on jailbreak it makes that white line curvy and filling it all the way to the top.

when ever you hold a bound key in fortnite:

I really want to know how I would be able to make this, support is appreciated.
Here’s Mine:

[Chaotic_Cody]

Here’s a great module for circular sprites.

Radial Sprite Sheet Generator for Circular Progress Indicators

I created a web app that lets you generate radial (circular) progress indicators from any source image you give it. This is necessary because Roblox doesn’t support clipping masks for images. There are other ways to make a radial progress indicator, but nothing will match the quality of using pre-rendered images. Since UI elements are locked to integral coordinates, using dynamically rotated segments creates some pretty undesirable results. I’m not the first one to make something like this, but…

[VitalWinter]

As far as I can tell, there are 2 methods of doing it, and with a transparent background restriction, maybe only one.

1. Use images of half an arc, along with tricks to mask and rotate them at different times.
2. Generate a sprite sheet of a bar filling. In game, swap to the appropriate section of the sprite sheet as it fills in.