How to achieve adaptive voxel size?

Forums Technical Discussion How to achieve adaptive voxel size?

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Tesla_s_fan: Member; 129 posts; Joined: Jan. 2013; Offline

Sept. 17, 2014 6:07 a.m.

How to achieve adaptive voxel size base on camera distance and so on?


JordanWalsh: Member; 142 posts; Joined: Feb. 2012; Offline

Sept. 17, 2014 10:13 a.m.

Crate a volume node and select the “From Camera” tab. You can then set the Z resolution. This is called the volume taper. You can adjust this with a Primitive SOP on any volume.

Showreel 2013 [vimeo.com]


Tesla_s_fan: Member; 129 posts; Joined: Jan. 2013; Offline

Sept. 17, 2014 9:32 p.m.

JordanWalsh
Crate a volume node and select the “From Camera” tab. You can then set the Z resolution. This is called the volume taper. You can adjust this with a Primitive SOP on any volume.

Thanks, but I mean voxel size can be adaptive in the same grid in fluid simulation. e.g. close to the camera voxel size become small, others far from camera become big in the same grid in fluid simulation. So , fluid near the camera has more details.


anon_user_37409885: Member; 4189 posts; Joined: June 2012; Offline

Sept. 17, 2014 9:36 p.m.

Currently that is not possible


danwood82: Member; 48 posts; Joined: June 2011; Offline

Sept. 18, 2014 12:44 a.m.

Yeah, I think this is pretty much the holy-grail of fluid sim… I've seen a few whitepapers about adaptive-resolution fluids, but I've yet to see a production package that implements it.


Tesla_s_fan: Member; 129 posts; Joined: Jan. 2013; Offline

Sept. 18, 2014 1:31 a.m.

danwood82
Yeah, I think this is pretty much the holy-grail of fluid sim… I've seen a few whitepapers about adaptive-resolution fluids, but I've yet to see a production package that implements it.

bifrost can done it


anon_user_37409885: Member; 4189 posts; Joined: June 2012; Offline

Sept. 18, 2014 2:17 a.m.

Is the adaptive voxel released? I'm looking at the Bifrost manual online but can't see it in there.


JordanWalsh: Member; 142 posts; Joined: Feb. 2012; Offline

Sept. 18, 2014 4:29 a.m.

aty84122
bifrost can done it

https://www.youtube.com/watch?v=DucKeXM_gHM [youtube.com]
at about 14:00 they talk about how they are looking at adding it. Not available yet though.

Showreel 2013 [vimeo.com]


tricecold: Member; 258 posts; Joined: July 2006; Offline

Sept. 18, 2014 6:52 a.m.

what you want is sth like this https://www.youtube.com/watch?v=rce92SZ1y60 [youtube.com]

and yes we want it also

but to my knowledge it isn`t avaliable yet, but I beleive it can be achieved with whats avaliable within Houdini given the needed time and cost.

Correct me if I am wrong SideFX

Head of CG @ MPC
CG Supervisor/ Sr. FX TD /
https://gumroad.com/timvfx [gumroad.com]
www.timucinozger.com


Skybar: Member; 166 posts; Joined: March 2013; Offline

Sept. 18, 2014 9:28 a.m.

The closest we got for particles is Reseeding in FLIP I guess.


anon_user_37409885: Member; 4189 posts; Joined: June 2012; Offline

Sept. 18, 2014 3:37 p.m.

The answer to the original question then is to crack out the C++ and IDE and start coding

aty84122
How to achieve adaptive voxel size base on camera distance and so on?

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