hey, any reason you're not doing an dilation instead of activate, vop, deactivate?
i mocked up a quick example with masked dilation with a solver sop; the morphological operations in vdbReshapeLevelSet are cool in that the level set is dynamically rebuilt (so you don't have to worry about going outside of the narrow-band).
i hope that helps!
-jeff
Found 68 posts.
Search results Show results as topic list.
Technical Discussion » VDB Activate: Deactivate not working as expected
- jbudsberg
- 92 posts
- Offline
Technical Discussion » Production release of OpenVDB 2.0.0
- jbudsberg
- 92 posts
- Offline
of course! spend some time with it, there is a ton in there. FYI, I tweaked a couple things and we re-uploaded this morning; let us know if you find any issues.
Just to clarify, the file has 2 sets of OpenVDB nodes:
* nodes that ship with Houdini natively
* nodes that come with the open source version of OpenVDB (that you would need to download/install from github).
Almost all of the examples are set up with native nodes; however, where appropriate there are networks with the open source nodes (new nodes/features not yet adopted into Houdini, etc). These open source nodes are denoted in green.
Of course, the file will work just fine with vanilla Houdini (simply ignore the error messages on startup), and the missing nodes will appear as merge nodes.
I hope that helps!
-jeff
Just to clarify, the file has 2 sets of OpenVDB nodes:
* nodes that ship with Houdini natively
* nodes that come with the open source version of OpenVDB (that you would need to download/install from github).
Almost all of the examples are set up with native nodes; however, where appropriate there are networks with the open source nodes (new nodes/features not yet adopted into Houdini, etc). These open source nodes are denoted in green.
Of course, the file will work just fine with vanilla Houdini (simply ignore the error messages on startup), and the missing nodes will appear as merge nodes.
I hope that helps!
-jeff
Technical Discussion » Flip fluid VDB surface clipping
- jbudsberg
- 92 posts
- Offline
Suglerishi! In the OpenVDB 2.0 (just released!) version of toPolygons, you can supply a level set “mask” that defines where you want to extract a mesh. This allows you to mesh just the top surface, and not the entire cube of the level set.
I don't particularly want a cube of liquid, just the surface of the ocean meshed
Check out the “example_meshing” geo node in the example HIP on the downloads page. [openvdb.org]
I hope that helps!
-jeff
Technical Discussion » vdb increase narrow band width
- jbudsberg
- 92 posts
- Offline
workaround as edward mentioned. granted, the open source rebuild level set sop is super handy; perhaps you need to perform a really wide filtering operation and your narrow-band is too narrow; or maybe you did some destructive operation in a volume vop and need to re-establish a “proper” level set as per input to a CSG operation; etc…
-jeff
-jeff
Technical Discussion » caching VDB
- jbudsberg
- 92 posts
- Offline
You should be able save VDB grids out as any of these: .bgeo, .vdb, .bgeo.gz. I wonder if something else is going on..
Houdini Learning Materials » Learning about VDB networks
- jbudsberg
- 92 posts
- Offline
JasonH
Hello,
I was wondering if there was any kind of tutorials on this subject? I have already looked through the Siggraph 2013 documents and been to the openVDB website
if you're still interested, we just added some great stuff on the OpenVDB website. [openvdb.org] I created a really thorough HIP file (on the downloads page [openvdb.org]), which walks you through a ton of different techniques and workflows. You can check out the Siggraph slides [openvdb.org] from our talks as well.
I hope that helps!
-jeff
Technical Discussion » Production release of OpenVDB 2.0.0
- jbudsberg
- 92 posts
- Offline
hi all! We're proud to announce that OpenVDB 2.0.0 is now available and is fully integrated into Houdini 13 that released earlier today. Visit our (re-designed) website for highlights, source code, documentation and an example Houdini file.
For details, check out the complete change-list [openvdb.org] for this version.
We put a really great example HIP file on the downloads page [openvdb.org]; I hope it should answer a lot of questions, but feel free let me know if you need clarification on anything.
Of course, if you ever have feature ideas, run into any issues, or have questions, you can catch us over at the OpenVDB forum. [openvdb.org]
thanks and happy halloween!
-jeff
For details, check out the complete change-list [openvdb.org] for this version.
We put a really great example HIP file on the downloads page [openvdb.org]; I hope it should answer a lot of questions, but feel free let me know if you need clarification on anything.
Of course, if you ever have feature ideas, run into any issues, or have questions, you can catch us over at the OpenVDB forum. [openvdb.org]
thanks and happy halloween!
-jeff
Technical Discussion » FLIP fluids Viscosity?
- jbudsberg
- 92 posts
- Offline
I was hoping for this too… and the ability to change viscosity per particle (think liquids with spatially/temporally varying viscosity)
-
- Quick Links