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Found 5 results

  1. Vellum Balloon Solver

    Hey guys, Im new to Houdini and I'm struggling to use the vellum balloon node, I've animated a fur ball falling and in the end is gets squashed by a box that falls in it. I want to then use the vellum balloon to inflate the fur ball again as shown in the sideFX website : https://www.sidefx.com/docs/houdini/shelf/vellumballoon.html please any help would be more than appreciated
  2. Vellum Balloon Pressure

    Hello there! After a few hours of playing with the Vellum Balloon object, I'm still trying to figure out how to recreate the effect hat was presented in the H17 Sneak Peek video (the one with the Rubber Toy inflating and being crushed). So far, I haven't been able to produce anything like that effect; playing with the pressure constraints doesn't really had the expected effect, and I'm quite surprised the solution isn't a little more straightforward. If any of you has any tips for achieving the Sneak Peek kind of inflating effect, I'll appreciate it. Thanks!
  3. Hi all I am using gasfieldtoparticle to bring in pressure but the pressure is showing unstable values if i check in spreadsheet geometry, suddenly goes to 0 and then again some values. Also if i enable pressure in guides, it is showing pressure is there on 2d plane grid but showing 0 values in spreadsheet. What i am doing wrong here? i have attached hip also. duckpressure.hip
  4. custom pyro pressure

    Hi,guys. Recently, i want built a tornado like pyro, a huge storm. The image come form man of steel,Alexander Lombardi Fx Reel ,https://vimeo.com/84196857 Before it , i have to list a better way to drive smoke rotate. So there is a simple test which include a tube source and a vortex force, i'm just add the vortex to the vel filed, after a while, you can see the smoke looks like a dish. I don't know if it was a nature shape, most like the air in middle was all been push out, so the air on top and bottom be attract in. So i have to find a way to disturbance to vel, first i want do it by pressure, high pressure air flow to low pressure lead to a wind, is it right? So i inject a custom pressure field, i not clear with how pressure working in pyro, i can export the pressure filed or modify it, but the pyro simulate not change at all, even i set the pressure to 0. Second way i modify the vel field directly, at the few frame of beginning, the vel field was direct to middle soon, i built a gradient field of the vel.y , if it great a value, then slow down the vel, it clamp the vel totally, although the smoke not rotate crazy, but it also lose the nature detail. I will keep optimize the second way. If anyone lead me a better way to built the tornado storm, or explain me how pressure working will be great. Thanks. pyro_pressure.hip
  5. Hey folks, Does anybody know how to use the "Goal Divergence" and the "Pressure" in the "Gas Project Non Divergent"? Whenever I try to inject a field the particles go crazy. Would be nice to get something like a explanation or example file. Thanks
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