Forums Houdini Indie and Apprentice Modeling - Extrusion with holes

Modeling - Extrusion with holes

   2949   8   2
User Avatar
Hatchery
Member
141 posts
Joined: 3月 2016
オフライン
 
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)

Love Houdini
 Report
User Avatar
Aizatulin
Member
504 posts
Joined: 7月 2005
オフライン
 
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)

 Report
User Avatar
toonafish
Member
563 posts
Joined: 3月 2014
オフライン
 
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)

 Report
User Avatar
Hatchery
Member
141 posts
Joined: 3月 2016
オフライン
 
@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.
Love Houdini
 Report
User Avatar
toonafish
Member
563 posts
Joined: 3月 2014
オフライン
 
you can download the scene with both here:

Image Not Found

Attachments:
Extruded_Holes_01.hiplc (251.0 KB)

 Report
User Avatar
Hatchery
Member
141 posts
Joined: 3月 2016
オフライン
 
Nice - as always multiple ways to do the same thing - Thanks alot :-)
Love Houdini
 Report
User Avatar
Konstantin Magnus
Member
720 posts
Joined: 9月 2013
オフライン
 
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]
 Report
User Avatar
anon_user_38315714
Member
340 posts
Joined: 6月 2017
オフライン
 
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 anon_user_38315714 - 2022年10月15日 14:23:24
 Report
User Avatar
Hatchery
Member
141 posts
Joined: 3月 2016
オフライン
 
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!
Love Houdini
 Report
  • Quick Links