Is it a way to change Tetra to Voronoi in FEM objects? When i try it appears error - autodop needs Tetras. I noticed that Tetras and Voronoi parts is different objects for Houdini and for example only Tetras lets to be clipped . How to make customly Voronoi fracturing for FEM objects?
Thank you.
Im newbie in Houdini and could be wrong in descriptions.
Tetrahedralize to Voronoi
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- Omnomnom
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- Nima
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- Omnomnom
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Yes, you are right, but that is what i did often . Moreover, if i make FEM handmade, i got problems with import (pathes is corrupted). And therefore i use Frsctured Solid everytime.
But my problem in another. Simulation with tetras is good but not give a smooth organic smashing and not let to control form of parts. And for this reason i want to use Voronoi, but then i have problem with Dopimport. Just to replace Tetras to Voronoi is not working. And that's because i need your help.
Thanks!
But my problem in another. Simulation with tetras is good but not give a smooth organic smashing and not let to control form of parts. And for this reason i want to use Voronoi, but then i have problem with Dopimport. Just to replace Tetras to Voronoi is not working. And that's because i need your help.
Thanks!
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- nicoM
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Hi.
Your fractures need the “fracturepart” primitive attribute.
Use the Fracture Solid Object shelf tool to build the basic network.
Then build your voronifracture part after the tetrahedralze sop. Remove or bypass the solidfracture node.
The you can create an interger point attribute for the scatterpoints called “fracturepart” and assign a $PT value to the points.
Then in voronoi node under Attribute Tab check “Copy Cell Point Attributes”
and write “fracturepart” to the “To Piece Primitives”.
Hope this helps.
Greets
Nico
Your fractures need the “fracturepart” primitive attribute.
Use the Fracture Solid Object shelf tool to build the basic network.
Then build your voronifracture part after the tetrahedralze sop. Remove or bypass the solidfracture node.
The you can create an interger point attribute for the scatterpoints called “fracturepart” and assign a $PT value to the points.
Then in voronoi node under Attribute Tab check “Copy Cell Point Attributes”
and write “fracturepart” to the “To Piece Primitives”.
Hope this helps.
Greets
Nico
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- Omnomnom
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- Omnomnom
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- nicoM
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I don't know what's wrong with your viewport. I have loaded your scene and I was able to see the fractures in viewport.
I have changed few thinks in your scene ‘cause the FEM solver can’t simulate polygons. You need to use the embedded workflow:
simulate with solids and drive the polygons objects. See attached scene file.
I have changed few thinks in your scene ‘cause the FEM solver can’t simulate polygons. You need to use the embedded workflow:
simulate with solids and drive the polygons objects. See attached scene file.
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- Omnomnom
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Thank you Nico for your help, but do you really sure you can simulate fracturing by Voronoi (not Tetra) with multiple parts? When i open your or my file i see a not fractured but remeshed to tetras one part like a my picture above. It doesn't matter how many scatterpoints i have i recive a one not fractured part. Yes, a simulate FEM is perfect but not be able to fracture.(( So sorry, i repeat i am newbie and slow, and i need your hint.
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- nicoM
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- Omnomnom
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Unfortunately no 
(( I change FEM parameters, but nothing - it's not smashing.
If i open both (new and old) your file i get warning:
obj/tube_object1
Skipping unrecognized parameter “childcomp”.
Skipping unrecognized parameter “lookupobjpath”.
Skipping unrecognized parameter “vport_onionskin”.
and much more mantra warning. I work on H14.
May be that's why it's not working.
(( I change FEM parameters, but nothing - it's not smashing.If i open both (new and old) your file i get warning:
obj/tube_object1
Skipping unrecognized parameter “childcomp”.
Skipping unrecognized parameter “lookupobjpath”.
Skipping unrecognized parameter “vport_onionskin”.
and much more mantra warning. I work on H14.
May be that's why it's not working.
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- Omnomnom
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