The texture axis should have the positive part of the Z axis slightly smaller than the object. Scale the X and Y axis by 2 or 3 from their natural state.
You can animate it by rotating around the Z axis or moving along the X and Y axis.
If there are a lot of overlaping layers on the object, make sure resolve depth (preferences editor) is quite high, 9 or so, otherwise You will get black areas on the object.
You can render this in scanline.
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