Forums Houdini Indie and Apprentice Modeling - Extrusion with holes

Modeling - Extrusion with holes

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Hatchery
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Hello -
What's the best way to do an extrusion with holes in Houdini?
I want to create a disk with lots of smaller holes, is there a way to set this up as an extrusion, or would I be better booleaning them out?
(File Attached)

Attachments:
Capture.PNG (810.1 KB)
ExtrusionWithHoles.hiplc (137.4 KB)

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Aizatulin
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Hi,
you can use triangulate2d for example, after this you can remove the inner prims.
Edited by Aizatulin - 2022年10月14日 09:24:44

Attachments:
ExtrusionWithHoles_triangulate2d.hipnc (162.4 KB)

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toonafish
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also depends on what you're going to use it for, do you need clean quads for instance ?

Attachments:
disc_01.jpg (36.4 KB)

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Hatchery
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@Aizatulin - Nice thankyou i think that will do the job nicley
@toonfish - Looks like the left one on your screenshot is the 'proper' way to do this. How did you acheive that?

Thanks both for your time! modelling really is not my strong point.
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toonafish
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you can download the scene with both here:

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Attachments:
Extruded_Holes_01.hiplc (251.0 KB)

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Hatchery
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Nice - as always multiple ways to do the same thing - Thanks alot :-)
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Konstantin Magnus
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Here is a subdivision compatible way.
Edited by Konstantin Magnus - 2022年10月15日 02:16:23

Attachments:
disc_holes.hipnc (120.5 KB)

https://procegen.konstantinmagnus.de/ [procegen.konstantinmagnus.de]
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Island
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Very elegant, Konstantin! I have always had to do the selection manually. Can you explain the VEX code:
i@ptrow % chi('freq') == 0 && i@ptcol == 2
Edited by Island - 2022年10月15日 14:23:24
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Hatchery
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Konstantin - Awsome as always (BTW love your Youtube stuff!)
So re the vex i think its used to group the points whoes i@ptrow are only divisible by 4 exactly, ie no remainder (using modulas == 0)and also have a i@ptcol equal to 2. So selecting the centre of the what will be the circle group. It's a very cleaver way to do it with the group promote - very nice!
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