Include/Exclude Objects in Clipping Material

[Ilius]

Is it possible? i tried to achive that, but the Clipping Material doesnt give a lot of options to play around and documentation is also not up to speed.

[bepeg4d]

Hi,
is it not possible for you to use the C4D Object Manager for this?
If you parent some closed objects to the main clipped object, they are directly included in the clipping:

ciao,
Beppe

[Ilius]

Sorry, i must have not been clear enough.

By Including and Excluding Geometry, what meant was to include/exclude Geometry that is to be clipped. Not Geometry that will clip.

Because right now, if i want to clip my scatter to have a clean grassline on the edge of a walkway, it just clips through everything and i would have a black hole looking into abyss.

[jayroth2020]

Materials with a priority higher than the clip material priority will be exempt from the clipping operation. Clipping uses the same priority as Nested Dielectrics. You can fine tune artifacts by using the Clip material Custom Ray Epsilon value.

To use your example, if you assign the sidewalk a higher priority than the Clipping material, it will be untouched by the operation.

[Ilius]

That kinda works, my floor is now excluded in clipping but my grass shows up now as kind of a ghost?
screenshot and scene attached

[jayroth2020]

What version are you using?

[jayroth2020]

You are not using Octane Object tags in your scene. Add one to the Hof.1 object, and in the tag's Visibility tab, disable Shadow Visibility. This will remove the shadows from being cast from the clipped objects.

[Ilius]

Thanks, thats pretty counter-intuitive but it works now, cool thing, thank you

[Ilius]

I've noticed a new problem which i dont know a way around - the clipping material prohibits shadows from falling on objects that are "inside" the clipping objects. (See screenshots and scene attched)

is there a way to fix this?

[SSmolak]

I don't think that Clipping Material is good choice to make such things. Anyway it should not block shadows that coming from not clipped material...