I'm trying to implement a glowing tail for my TextureRegion and can't figure out how it could be done. Let's assume that I have TextureRegion with a circle, this circle is drawing from left side of the screen to the right side using SpriteBatch. I want to display glowing tail (the same like asteroid tail) which disappears after certain amount of time.
One of the idea which I have to draw TextureRegion with different amount of alpha - 0.1, 0.2, till 1.0 and increasing x value at the same time. Is there other better way for it?