Some fiddling around with Point in Volume…
Point in Volume returns True (1) if a point is inside the specified geometry, and False (0) otherwise. Remember, zero is False, non-zero is True.
You can plug that boolean output into a Topo compound, like so:
If you break it down, the above is just doing this:
Since the introduction of ICE modeling, you may have hit context mismatches like this:
or this:
That’s because compounds like Test in Geometry and Randomize Around Value are built to work with points/particles. For example, if you look inside Test Inside Geometry, you’ll see it is getting the point position.
So, when you want to use these convenience compounds in a different context, you’ll have adapt them.
Here’s the ICE tree from the first half of the Transforming through textures master class.
The ICE tree, together with an animated mesh, gives an effect something like this:
eX-SI 