Can anyone tell me why

[dangerweenie]

I can only get an RBD to autofracture from metaball impulses when I add a ground plane to the DOP network?

It doesn't make sense to me.

I've attached two screenshots to this post. The first autodop network fractures as expected. The second autodop network does nothing.

Any help is appreciated.

Thanks,

Matt

[johner]

Hi Matt,

Thanks for the report; turns out that's a bug in the fracture solver. It should be fixed in tomorrow's H11 build.

If you want to fix it in your file in the meantime, right-click and unlock the RigidBodySolver, then do the same on the VoronoiFractureSolver node inside there. Navigate into the fracture_SOP_solver and look for a Null node called "stamps". The Object Name parameter there has the following expression:

`dopobjectlist(chs("dopnet"), ch("objid"), ch("objid"))`

Change it to

`dopobjectlist(chs("dopnet"), ch("objid"), 1)`

and it should work. Or just install tomorrow's build

[dangerweenie]

Sweet. I found a bug!! I feel like such a badass now.

Thanks for clearing it up, I kind of spent a couple hours hunting around for an explanation since I am a rookie w/ Houdini.

Thanks for all the great fracturing posts, btw. It would be great to hear your thoughts on my last question in the DOP forum, if you have a sec.

Best,

Matt

quote name='johner' date='04 October 2011 - 01:28 PM' timestamp='1317749306' post='87401']

Hi Matt,

Thanks for the report; turns out that's a bug in the fracture solver. It should be fixed in tomorrow's H11 build.

If you want to fix it in your file in the meantime, right-click and unlock the RigidBodySolver, then do the same on the VoronoiFractureSolver node inside there. Navigate into the fracture_SOP_solver and look for a Null node called "stamps". The Object Name parameter there has the following expression:

`dopobjectlist(chs("dopnet"), ch("objid"), ch("objid"))`

Change it to

`dopobjectlist(chs("dopnet"), ch("objid"), 1)`

and it should work. Or just install tomorrow's build