I watched a video [youtu.be] on how to fill a 3D mesh with itself. I just got the idea that it might be possible to use Houdini to fill my mesh with such infills:



The above infill is just a sample, any other form of infill would work too. Can anybody get me started on how to generate infills with Houdini OpenVDB modules? Thanks!

One idea

In the referenced video [youtu.be] the workflow starts with:

1. Import 3D mesh
2. VDB-from-polygons tool is used to covert 3D polygon mesh to VDB voxel field
3. VDB-to-spheres tool is used to fill VDB voxel field with spheres
4. Change the sphere radius size
5. Increase the sphere max number
6. Remove the sphere overlap

At this point, this is the result:



Now, I'm looking for a Houdini OpenVDB functionality to go from spheres to an infill shape like blue lines below:



When the above spheres are generated, I need a tool to swap filled (active) voxels with empty (inactive) voxels. What OpenVDB tool would do the swapping for me? Thanks!

Hi megiddgit,

the VDB combine-node does boolean operations.