Forums Houdini Indie and Apprentice [solved] curve surface cookie error

[solved] curve surface cookie error

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oat
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I want to get the difference between the two curve surfaces (the first 2 images) but somehow get fragmented result (the 3rd image).

can anybody kindly take a look and advise on how to solve this cookie error?

thanks!

-Ji
Edited by - Aug. 14, 2011 04:23:25

Attachments:
voronoi_split_v14.hipnc (82.2 KB)
Screen Shot 2011-08-07 at 12.09.42 AM.png (50.7 KB)
Screen Shot 2011-08-07 at 12.09.53 AM.png (73.9 KB)
Screen Shot 2011-08-07 at 12.09.02 AM.png (73.7 KB)

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Erik_JE
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You can not use the Cookie SOP like this. It is like trying to make a hole in a polygon with a smaller polygon using the Cookie. It won't work.

Someone might prove me wrong but it makes no sense to me.
Drive, monkey, drive!
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fsimerey
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Here your scene modified. You must have a volume intersect the other one. it's boolean, so like all other 3D packages, you need a closed shape.

I put a subdivide to avoid artifacts in cookie SOP.

Attachments:
voronoi_split_v14_fs.hipnc (75.2 KB)

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oat
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Hi, fsimerey, thanks for the advise!

I notice that there're still some artifacts in the result… guess the cookie node is never perfect…

Attachments:
Screen Shot 2011-08-07 at 1.22.08 AM.png (44.2 KB)

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fsimerey
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Yep, cookie SOP is not perfect. The Jitter option can help you sometimes.
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oat
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may I ask a related question: is there a way to get the voronoi pattern lines?

thanks!
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fsimerey
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I don't know. But i'm sure that the voronoi split have a cookie SOP inside.
A good idea would be to get the inverse option on this SOP.
FYI, before voronoi come in Houdini 11, it was an OTL found in odforce forum. Perhaps you could find it and use it.
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fsimerey
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Here i think the better way to do what you are looking for. No cookie SOP.
More simple and cleaner than cookie SOP.

Attachments:
voronoi_split_v14_fs2.hipnc (79.4 KB)

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oat
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dear fsimerery, thank so much for your kind advise!
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oat
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… add some color based on fsimerey's approach by using the VoronoiFracture node

blow up the voronoi fractured shape is also fun …

Attachments:
voronoi_split_v14_fs2_104.hipnc (214.5 KB)
Screen Shot 2011-08-07 at 11.37.35 PM.png (39.5 KB)
Screen Shot 2011-08-07 at 11.38.09 PM.png (102.1 KB)
Screen Shot 2011-08-07 at 11.44.57 PM.png (53.7 KB)
Screen Shot 2011-08-07 at 11.49.32 PM.png (88.3 KB)

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