Looking for a way to convert points to a [any shape will do] primitive solid?

[Akash]

I have some 2500 non-manifold edges in a mesh [8 mil + faces] created in Zbrush… One way I use for fixing this, is importing the mesh to Rhino, and use the edge tool to mark the problem locations… once I know where these non-manifolds are, it is just a sweep of a brush in ZB to clean it.

the idea is to convert the marking points in Rhino to small spheres [or cubes] and export these back to the ZB model as location markers.

there must be a simple way to do this in GH… unfortunately I currently know much too little GH beyond this:

screenshot of the piece with the non-manifolds edges

thanks a lot
Akash

[Joseph_Oster]

@Akash

there must be a simple way to do this in GH… unfortunately I currently know much too little GH

Only those who know how have any right to call it simple. You don’t.

[Akash]

thanks a lot @Joseph_Oster for letting me know my rights.

Kindly avoid this thread if my choice of English words annoys you.

and by the way, I’m a goldsmith, who also use rhino, but for the type of work I do GH is very rarely needed. so…

Apology to everyone else, if I may refocus to the issue. of converting points into spheres/ cubes. It doesn’t have to be in GH if there’s a non manual [one by one] way to do this in rhino directly…? I’d love to know.

With thanks and best regards
Akash

[mark19 (Mark)]

I have noticed that a large number of you replies to uses have a very negative tone. You might want to think about how you are putting yourself out there.

Best Regards,

Mark Plaga

[Helvetosaur]

@Akash

Apology to everyone else, if I may refocus to the issue. of converting points into spheres/ cubes. It doesn’t have to be in GH if there’s a non manual [one by one] way to do this in rhino directly…? I’d love to know.

Here is an old Python script from my collection that will apply a sphere of your specified radius to all selected points.

SpheresToPoints.py (896 Bytes)

To run the script once or twice, copy to your desktop, type ! _RunPythonScript in Rhino and browse to the script.

To install scripts more permanently see this wiki page.

Here is a quick GH definition to do the same just in case.

SpheresToPoints.gh (5.3 KB)

[akilli (Ethan Gross)]

For future reference, in case you want to let GH look for the non-manifold edges, the Mesh>Mesh Edges component will identify them. You might want to try it out with something less than 8 million faces first though. Nice work BTW!

[Akash]

Thank you so much.
Going through the vast collections of your MMT scripts installed on my computer long time ago… the SpheresToPoints was already there… Being this the first time I needed this function, I simply forgot, it is working great.
I’ll study the GH to try and learn how it works, thank you.

This Script was the missing part in figuring a workflow using Rhino and Zbrush side by side on the same model.

@akilli

For future reference, in case you want to let GH look for the non-manifold edges, the Mesh>Mesh Edges component will identify them. You might want to try it out with something less than 8 million faces first though.

Thank you Ethan @akilli
Rhino already does a great job in finding and marking the non-manifolds edges… it is just completely unusable to try and fix these in rhino [ the current model is over 14 mil faces]
ZB on the other hand, has not problem running quite smooth with such heavy meshes. With the locations marked by exporting the little spheres, a touch with a smooth brush in SculptrisPro mode, will re-topolize the non-manifold areas.
There are good ways to retopolize the whole object [without loosing details]
but the Rhino route is really nice to fix localised problems.

Here with @Helvetosaur script using 0.2mm spheres [in red]

With 0.1mm spheres [in transparent white here]

Thanks a lot for the kind help.

Akash