Is this possible

[Arnage]

Glad to have helped.

@KhenaB;195459

I want to give your method a try, what would be the easiest way to calculate the bounds of each parts of the object, the sphere shape seems quite simple but let’s say the helmet isn’t perfectly round, would have to be an equation done in the material editor with trial and error until the mask matches the mesh?

Math is quite predictable, so trial and error is not necessarily required But yeah, if you need another shape you would have to adjust the math to approximate that shape. Also keep in mind that for other shapes you have to consider the objects rotation in addition to the location.

One additional advantage of method is that you can easily add other such as foam or waves near the sub in a more exact way then the common depth based methods would allow.