dyei nightmare Posted July 13, 2010 Share Posted July 13, 2010 well, i friend of mine was asking if houdini is capable to simulate cymatics just like cymatics in real life... he means this: a sound afecting particles or fluids that creates diferent fractal paterns bassed on the sound frequency could it be posible to simulate in houdini? Quote Link to comment Share on other sites More sharing options...
Macha Posted July 14, 2010 Share Posted July 14, 2010 (edited) I think the main problem here is getting a beautiful resonating wave, perhaps needing more accuracy than the dop solvers can provide, or obtaining the right frequencies/dimensions/harmonics. Once you have that I can think of a variety of ways of vizualizing it. A simple method would be to extract wave height for a single geometry (not a sequence), and then use that to drive a force (attractor). That would presumably look nice and be fast but perhaps be not physically realistic (?). If you happen to have equations describing the system in question, then its perhaps possible to set it up in vex. Not sure my attached file does actually do anything useful or realistic but its a quick attempt. It's not very good and quite messy but gives you something to play with. There are 2 methods different from the one described above: One uses a dop rippled grid to drive an attractor. The other does something similar but creates a vel field to advect particles. That last one gives nice results and is not too slow if you set up a rop to cache geometry. dance2.hipnc Edited July 14, 2010 by Macha Quote Link to comment Share on other sites More sharing options...
Macha Posted July 14, 2010 Share Posted July 14, 2010 (edited) I rendered an image and a vimeo if you are interested: Edited July 14, 2010 by Macha Quote Link to comment Share on other sites More sharing options...
dyei nightmare Posted July 14, 2010 Author Share Posted July 14, 2010 (edited) macha you are the man, thats a very cool example, keep up the good work, dude... *thumbs up* Edited July 14, 2010 by dyei nightmare Quote Link to comment Share on other sites More sharing options...
vmuriel Posted July 14, 2010 Share Posted July 14, 2010 (edited) Something to start to play cymatics.mov Edited June 20, 2013 by vmuriel Quote Link to comment Share on other sites More sharing options...
vmuriel Posted July 14, 2010 Share Posted July 14, 2010 . Quote Link to comment Share on other sites More sharing options...
dyei nightmare Posted July 14, 2010 Author Share Posted July 14, 2010 wow great work too, dude, congratulations also for you Quote Link to comment Share on other sites More sharing options...
Macha Posted July 16, 2010 Share Posted July 16, 2010 Here's another "physical" method. It would be interesting to try it with different shapes of emitters and perhaps music to drive it. sand.hipnc Quote Link to comment Share on other sites More sharing options...
dyei nightmare Posted July 17, 2010 Author Share Posted July 17, 2010 thats a great example, you rock, macha Quote Link to comment Share on other sites More sharing options...
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