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vdb fracture vs other fracture type


misterbil

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I was wondering...

Beside the ability to do non-voronoi fracturing.Is there an other advantage of using vdb fracturing?

Performance improvement, ease of workflow, stability?

 

I'm not here to complain or criticize anything. I'm just wondering what you boys and girls think, what does you experience taught you.

 

thanks

 

PS: feel free to point me to an other thread if someone already asked this question.

 

bil

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hi!

 

1. it is much more controllable than voronoi

2. it gives a much more realistic look.

 

cons:

- produces a lot of polygons, but simulations can be done with proxy version.

- there is a limitation with uv's transferring back to fractured model by convert_vdb sop (if someone knows a proper way, let me know)

I mainly use it if the subject of fracturing is in close-up 

 

Otherwise voronoi is good for bunch of things.

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I do like using VDB fracturing, but there are some issues to deal with.  The main one I have come across is having random pieces being considered a single piece.  To get around this I throw in a connectivity node to fix it.   The other problem is getting weird cuts with the geometry.  for example getting holes in the objects or big L shape pieces.

 

The main issue is if you have a specific geometry you need to shatter, converting to VDB will alter the topology and UV mappings. 

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