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Thomas Helzle

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Thomas Helzle last won the day on August 16

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  1. Controlling Focus Distance

    Cool - have to try it with Redshift as soon as the current job is done! :-) So far I always used this in the focus distance field: // Camera focus distance to a null called focus: vlength(vtorigin(".","../focus")) But it's a bit clumsy to navigate the null. Tom
  2. Controlling Focus Distance

    Thanks symek - have to try that. I guess that will only work with Mantra, right? Cheers, Tom
  3. Controlling Focus Distance

    What I really miss is a way to click into the rendering to set the focus distance. This is very nice for quickly finding the sweet spot for stills. Love it in Thea Render etc. Is there a way to do this as a viewport action in Houdini with some raytracing from the mouse? Cheers, Tom
  4. Toms "Learning Houdini" Gallery

    "Hex Grid" An experiment with very finely detailed hexagonal geometry for deformation. All geometry, no fat ;-) Cheers, Tom
  5. Toms "Learning Houdini" Gallery

    "The Shell of Light" An exploration of extreme DOF in Redshift. The basis is a wire-shell, but rendered with massive DOF. This creates the most fascinating and somehow otherworldly structures. Art Prints here: https://fineartamerica.com/profiles/thomas-helzle.html Cheers, Tom
  6. I ended up using this (with "@class" being the per-object attribute from the connectivity node): float searchrad = chf("Searchradius"); int maxpts = chi("MaxPoints"); int nearpnts[] = nearpoints(0, @P, searchrad, maxpts); int maxlines = chi('MaxLines'); int cnt = 0; foreach(int pnt; nearpnts){ if(@class != pointattrib(0, 'class', pnt, 1)) { if (cnt >= maxlines) { break; } int line = addprim(0, "polyline"); addvertex(0, line, @ptnum); addvertex(0, line, pnt); cnt += 1; } } While this works fine, I still wonder if it wouldn't be faster to have a fitting group expression directly in nearpoints... ? Cheers, Tom
  7. I wondered the same thing recently and wrestled with the "group" parameter in nearpoints, but somehow did not grok how to write a group expression that does this. Using pcopen feels much clearer there, although one will probably still have to have a large maxpoints number to be sure to hit something on the other curves and then maybe limit the result manually in the while loop. I was searching for only one closest point on any curve different from the current, using the "class" attribute from the connectivity node... Cheers! Tom
  8. Is AMD potentially risky? (Threadripper)

    Interesting thread, thanks everybody! Reading about those 18 core TRs or new intel cpus made my mouth water initially, but what I read here doesn't exactly make me want to jump in right away. My 6 core i7 3930 from 2013 overclocked to 4.1 Ghz (costing about 500 Euro back then) with 64 GB GDR 3 RAM @1600 takes 30 minutes for the Boolean Sphere scene - not too shabby. So while you guys get almost twice the speed, that still isn't exactly as earth shattering as I would have expected. Cinebench Single Core is 139 here, so basically nothing much has changed in that department. So it's only really worthwhile for CPU rendering (I only score 1034 in Cinebench with 6 cores / 12 threads) but I use the GPU for that anyway. I think I'll wait some more with getting a new machine and let things settle down a bit regarding drivers, prices and bioses... :-) Cheers, Tom
  9. Toms "Learning Houdini" Gallery

    "Hexa Grid" Two color-variations of an experiment where I started out with a hex-grid and went from there... As always: watch in full resolution for all the detail :-) Cheers, Tom
  10. Toms "Learning Houdini" Gallery

    "Twisted Growth" DOF in Redshift is expensive but beautiful! :-) Cheers, Tom
  11. Server downtime

    Thank you very much for all you do! Odforce is the best :-) Cheers, Tom
  12. Exporting Small Ocean as seamless looping FBX

    Didn't look at your scene but I had the same problem and it was because of the noise that is added by default. Disable that and it loops perfectly. Cheers, Tom
  13. Toms "Learning Houdini" Gallery

    "Volume Displacement" Volume Displacement Experiment. Rendered in Redshift. Cheers, Tom
  14. Toms "Learning Houdini" Gallery

    "All the lonely People" Looking into volumes and VDB. Experimenting with VDBtoSpheres lead to this. Rendered in Redshift, DOF-painting in PS. Cheers, Tom
  15. Toms "Learning Houdini" Gallery

    "Wound Around" Experiment with Redshift Emission. Cheers, Tom