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Found 4 results

  1. Hi Does anyone know a fast way to transform large arrays of points into simple voxel meshes (with no overlapping faces inside)? Unfortunately, VDB won't work. Is there any existing vex script by any chance?
  2. [SOLVED] VEX in Volume Wrangle

    Hi all, I'm trying to write some vex in a volume wrangle but I'm really struggling atm, not sure if the problem is the syntax or my inexperience with voxels. I have a volume which I set up with random densities and then, in the next step, the density of a voxel should be affected by the surrounding voxels. I've done the first step but can't figure out how to access the "closest neighbour voxels". I guess they have some sort of index but can't figure out which voxel has which index or if I should access them by their position. Tried to use the function volumeindex() to find index and volumesample() to take a sample from a position but both only returns 0 so I'm obviously doing something wrong. I wrote it like this: vector pos = {2, 2, 2}; float temp = volumeindex(0, "@A", pos); printf("%f\n", temp); @A += temp; It doesn't seem to matter what position I use for the vector pos, the functions always return 0 either way. So if someone knows anything about this it would be great volumeRandom.hipnc
  3. Please, I just need a couple of pointers I've been trying to set-up a pyro simulation, have some smoke rise up and collide with an rbdobject. I've uploaded my hip file and written all my questions and problem explanations in there. Plus I think that it's much easier to understand if you have my hip file instead of me trying to explain it here in text form. Please take a look at it. The gist of it is : The smoke has a temperature field. And I've wanted to lower the temperature field of the smoke that comes in contact with the geometry so I've come up with the idea to give the geometry it's own temperature field and tick the temperature merge option on the pyro solver. In order to create the geometries temperature field I plan to make a volume mask to mask out the smoke's temperature field so that i'm only working with the voxels that make up the geometry and then lower their values, the result will then be the geometries temperature field. I've listed all the problems and explanations inside the hip file please take a look Any suggestion is greatly appreciated Thank you Houdini_DOPs_pls_help.rar
  4. VDB scaled up?

    Hello! I'm doing some R&D and am hoping to convert my polygon mesh to a vdb to be referenced elsewhere in my project. When I preview the vdb, however, it is scaled much larger than I expected and I'm not really sure what to make of it. Any help would be appreciated! I've attached screenshots, the first is the geometry, and the second is the resulting voxels.
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