Delete Interior

[GreenGuy]

Hi everyone,

 

I am trying to find an automated way to clean up some CAD geometry that I have. Retopo is no problem, the only issue I have is that the model has a lot of interior geometry that I want to get rid of. Interior and extrerior are connected !!! So I was trying different things without getting a decent result.

I am thinking that one should send out a ray along the normal and see what it hits. Ideally multiple rays at varied angles to be sure. Outside points should hit pretty much nothing. 

So how do I do that? I dont know if a gather loop is a good option. Anyway, I could bot get that to work on sop level.

Any help with this would be truly great. Thank you very much in advance.

 

Edited February 18, 2019 by GreenGuy

[anim]

Ray SOP or intersect() VEX function can get you there

Ray SOP can also shoot multiple rays for convenience (Sample and Jutter Scale controls)

Edited February 18, 2019 by anim

[GreenGuy]

Hey anim, thanks for your answer. I actually tried working with both, but I was not succesful. I figured if hitprim returns -1 it did not hit anything right? Well it does not seem to work that way. Could you be a little more specific on how you would approach this?

 

[GreenGuy]

Hey there,

I believe I figured it out thanks again for your help.

[anim]

27 minutes ago, GreenGuy said:

Could you be a little more specific on how you would approach this?

here is a little example

ts_remove_internal.hip