Forums Technical Discussion How to merge co-planar primitives?

How to merge co-planar primitives?

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raincole
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For example, from this:



To this:



In other words I'd like to dissolve all the edges that connect two co-planar faces. How could I do this procedurally?

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Screenshot 2022-04-06 204855.png (174.8 KB)
Screenshot 2022-04-06 204919.png (181.3 KB)

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animatrix_
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You can do it using the Group SOP and Dissolve SOP:



Senior FX TD @ Industrial Light & Magic
Get to the NEXT level in Houdini & VEX with Pragmatic VEX! [www.pragmatic-vfx.com]

youtube.com/@pragmaticvfx | patreon.com/animatrix | pragmaticvfx.gumroad.com
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sepu
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If you have the labs

you can use `extract silhouette`
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Siavash Tehrani
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Also handy is the Labs Dissolve Flat Edges node.
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raincole
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Thank you all! I didn't expect to learn so much with this simple question :p
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kks_m
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animatrix_
You can do it using the Group SOP and Dissolve SOP:




Sorry for the off-topic, but what setting are you using in order to mix 3D scene view and nodes together like in your screenshots? Thanks in advance!
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Jikian
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Fuse - Divide (Remove Shared Edges)
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animatrix_
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kks_m
animatrix_
You can do it using the Group SOP and Dissolve SOP:




Sorry for the off-topic, but what setting are you using in order to mix 3D scene view and nodes together like in your screenshots? Thanks in advance!

I wrote a custom Python Qt extension to do so. I talk about it in detail here (after 30 min or so):



Feel free to send an RFE to SideFX if you want to see this feature in H20
Senior FX TD @ Industrial Light & Magic
Get to the NEXT level in Houdini & VEX with Pragmatic VEX! [www.pragmatic-vfx.com]

youtube.com/@pragmaticvfx | patreon.com/animatrix | pragmaticvfx.gumroad.com
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kks_m
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animatrix_
I wrote a custom Python Qt extension to do so. I talk about it in detail here (after 30 min or so):

Whoa, very impressive! Love it.

animatrix_
Feel free to send an RFE to SideFX if you want to see this feature in H20

Will do :-)
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