poppy 3 Report post Posted July 28, 2013 Hi, Is there a way to achieve this effect in H? https://vimeo.com/12992186 http://www.fusioncis.com/pr_smorganic.html 1 Share this post Link to post Share on other sites
Skybar 269 Report post Posted July 28, 2013 Here is an interesting paper on an approach to it: http://vacation.aid.design.kyushu-u.ac.jp/~and/sheetflip/index.html It is probably possible to do something similar in H, I wouldn't know where to start though. Share this post Link to post Share on other sites
Fabiano Berlim 13 Report post Posted July 29, 2013 There's no fluid software in the market capable to do this effect. CIS Fusion have a great solution, but is not ever close to ideal, since it looks like there's no concern to volume preservation and correct surface tension. The paper that Skybar posted is the best solution so far to flip method, but it relies on a anisotropic meshing system (flat spheres instead of spherical ones), which is currently not supported by OpenVDB or any other software. Share this post Link to post Share on other sites
Pazuzu 189 Report post Posted July 29, 2013 (edited) Hi, Is there a way to achieve this effect in H? https://vimeo.com/12992186 http://www.fusioncis..._smorganic.html Currently I'm working on a fast and stable solution to this limitation, I'll sold the asset in Orbolt very soon (I'm working on the promo video ). Here is a little example (comparison) of my aeb_FLIP_sheets asset. This test was executed with the solver default settings and a small amount of particles, to ensure that my asset work even at very low resolutions, in this scenarios is like a localized up-rez technique. Edited July 29, 2013 by Pazuzu 2 Share this post Link to post Share on other sites
tar 600 Report post Posted July 29, 2013 Currently I'm working on a fast and stable solution to this limitation, I'll sold the asset in Orbolt very soon (I'm working on the promo video ). Here is a little example (comparison) of my aeb_FLIP_sheets asset. These tests were executed with the solver default settings and a small amount of particles, to ensure that my asset work even at very low resolutions, in this scenarios is like a localized up-rez technique. http://speedy.sh/ASJ...ts-examples.rar The download doesn't seem to work for os X. Any other way to share it? Share this post Link to post Share on other sites
Pazuzu 189 Report post Posted July 29, 2013 (edited) The download doesn't seem to work for os X. Any other way to share it? Sorry for that, (this time are Quicktime files) but here is another test. The sheet_tendrils video, forces the tendrils and fills the holes in a more agressive way. sheets.mov sheets_tendrils.mov same_sim_without_asset.mov Edited July 29, 2013 by Pazuzu 2 Share this post Link to post Share on other sites
tar 600 Report post Posted July 29, 2013 Awesome! Looks magical. Share this post Link to post Share on other sites
lukeiamyourfather 140 Report post Posted July 29, 2013 There's no fluid software in the market capable to do this effect. CIS Fusion have a great solution, but is not ever close to ideal, since it looks like there's no concern to volume preservation and correct surface tension. Mark at Fusion CI Studios came up with the workflow originally. There's a plugin for it now in RealFlow and has been for a couple versions. It's called the sheeter daemon. True, it's not physically accurate but in order to simulate thin sheets and preserve volume it would take a lot of particles (probably billions). Faking it is the only practical solution for now. Share this post Link to post Share on other sites
Skybar 269 Report post Posted July 29, 2013 Sorry for that, (this time are Quicktime files) but here is another test. The sheet_tendrils video, forces the tendrils and fills the holes in a more agressive way. Thats very cool. Can't wait to try it! Share this post Link to post Share on other sites
Pazuzu 189 Report post Posted July 29, 2013 Here is another example, this time without gravity and a more subtle threshold for the hole filling. More examples to come!!! sheets_03.mp4.rar 3 Share this post Link to post Share on other sites
Sifis 26 Report post Posted July 29, 2013 Looks great, Keep it coming... Share this post Link to post Share on other sites
Fabiano Berlim 13 Report post Posted July 29, 2013 Awesome!!!! Share this post Link to post Share on other sites
galagast 130 Report post Posted August 10, 2013 looks really cool!! can't wait to see more examples There's no fluid software in the market capable to do this effect. CIS Fusion have a great solution, but is not ever close to ideal, since it looks like there's no concern to volume preservation and correct surface tension. The paper that Skybar posted is the best solution so far to flip method, but it relies on a anisotropic meshing system (flat spheres instead of spherical ones), which is currently not supported by OpenVDB or any other software. I recall seeing an anisotropic meshing mode from the Thinkbox Frost website, although I'm not sure if it's the same anisotropic meshing method mentioned in the paper posted by skybar. Share this post Link to post Share on other sites
Aliencorpse 13 Report post Posted November 6, 2013 Very cool stuff Share this post Link to post Share on other sites
mishurov 2 Report post Posted December 11, 2013 There's no fluid software in the market capable to do this effect. CIS Fusion have a great solution, but is not ever close to ideal, since it looks like there's no concern to volume preservation and correct surface tension. The paper that Skybar posted is the best solution so far to flip method, but it relies on a anisotropic meshing system (flat spheres instead of spherical ones), which is currently not supported by OpenVDB or any other software. Implementation of anisotropic method is quite simple, I made one https://github.com/mishurov/anisotropy_matrix But since Houdini uses OpenVDB for surfacing the FLIP, therefore OpenVDB developers should add that algorithm into their library. And there are some perfomance issues to use fastest method for calculation of Single Value Decomposition and so on. 2 Share this post Link to post Share on other sites
yourdaftpunk 31 Report post Posted December 11, 2013 This achieves with better surface tension calculation what nodes like the sheeter daemon achieve with particle reseeding: Versatile Surface Tension and Adhesion for SPH Fluids http://cg.informatik.uni-freiburg.de/publications/siggraphasia2013/2013_SIGGRAPHASIA_surface_tension_adhesion.pdf http://cg.informatik.uni-freiburg.de/movies/siggraphasia2013/sigasia13_video.mp4 http://cg.informatik.uni-freiburg.de/people/nakinci.htm 2 Share this post Link to post Share on other sites
Pazuzu 189 Report post Posted June 15, 2014 Finally I almost done with the development of my custom asset that tries to solve the water sheets and tendrils in a FLIP/PIC sim, at last I've found a method to control the volume gain and break the fluid sheets without deleting particles, even retime effects are possible!!!; Here are some test with some parameter variation, hope you like it. IMG.rar 10 Share this post Link to post Share on other sites
Skybar 269 Report post Posted June 15, 2014 Cool stuff Alejandro! Share this post Link to post Share on other sites
djwarder 6 Report post Posted June 16, 2014 Impressive! Will be great to have this as part of the Houdini liquid FX arsenal!! Share this post Link to post Share on other sites
