random pick points

Forums Technical Discussion random pick points

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syzmatrix: Member; 111 posts; Joined: Dec. 2008; Offline

March 13, 2011 6:11 a.m.

hi every body:
I have a simple problem in recent work.

Is it possible to randomly select 10 points on a mesh at each frame in Houdini? I think it is may be simple, but I can not work it out, hope someone helps.

ops:

please.


tamte: Member; 8582 posts; Joined: July 2007; Offline

March 13, 2011 6:54 a.m.

use Sort SOP with random mode and seed $F
then just select first 10 points by Group SOP (pattern 0-9, point mode)

Tomas Slancik
FX Supervisor
Method Studios, NY


syzmatrix: Member; 111 posts; Joined: Dec. 2008; Offline

March 15, 2011 10:02 p.m.

nice and simple, thank you very MUCH!


AnimGraphLab: Member; 51 posts; Joined: May 2019; Online

Feb. 14, 2023 2:39 p.m.

Alternatively, you can use a Group by Range SOP and play around with a range filter. Possibly also to change it on every frame ($F) and something else.

Edited by AnimGraphLab - Feb. 14, 2023 14:40:00

Attachments:
group_range.png (160.7 KB)

3D Generalist. Transforming 2D images to 3D animations.
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