@:value(new PowOut(2))staticinterpolation:PowOut = new PowOut(2)
new(radius:Float)
@:value(0.0)angle:Float = 0.0
@:value(0.0)centerX:Float = 0.0
@:value(0.0)centerY:Float = 0.0
@:value(0.0)radius:Float = 0.0
begin(skeleton:Skeleton):Void
end():Void
transform(position:Vector2, uv:Vector2, light:Color, dark:Color):Void