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Found 309 results

  1. FLIP / FEM - Mutual Interaction

    Sup guys, I'm trying to make a Fluid pushing a FEM sphere. I've found some information about fluid force + some setting on the flip solver but the FEM object just don't move. I'm clearly doing something wrong. Can anyone help understand what's going on? Thank's, Alvaro FLIP FEM.rar
  2. I am trying to export flip sim from H to maya in Houdini 16.If I get it right,I have to export mesh,with flatened geometry ,like alemic,for example,and displacement with baked masks and ocean spectrum like exr ,for example,but I cant make it work.Can anyone help me? Thank you!
  3. Melting/Tar simulation

    Hey Houdini gurus, I am trying to achieve this effect of a melting object. (video below) Do any of you lot have idea on how to approach this? My guess if flip fluid but how to get the stretchy and deforming part with it? Any help on this would be really appreciated. Regards, b
  4. FLIP Stick on Mesh

    Hey guys, What is the best way to make FLIP reaaally stick to an object? Right now I'm using only the "Stick on Collision" option but it doesn't work as I expected. I've crancked up the normal value to make it move more drastically but It's getting unstalble. I guess this setup from Dave Stewart works better than the Stick on Collision only (i guess he's using both). It doens't stick like mud the the object but I'd like to know how it works as well, he says: "Grabbed the Pressure field values (Gas Field to Particle) and ran them through a POP VOP, also using the surface distance to reinforce the outer shell of the toy." how can I use the Gas Field to Particle? I know what it does but i have no idea on how to connect it with the object and trasnfer this velocities using a VOP POP. Well, any tips are welcome Thank's - Alvaro
  5. Gently wobbling fluid and foam

    Hi. I'm new to Houdini and wondering how would you guys approach something like this the simplest way: Wobbly fluid example I don't necessarily think that flip is needed for this. Maybe there is a much easier way (like animated booleans) but the foam part is what concerns me. The example looks like it is a texture but I'm not sure if live booleans can have UVs. Anyway I'm just thinking out loud. Any ideas would be highly appreciated. Thanks! wobbly_fluid.mp4
  6. Sticky Splash?

    Hey magicians, I'm trying to takle an effect wich a Splash sort of come out of a screen, Any suggestions on what would be the Best way to approach something like this? Flip fluids with density driving by color? Particles to vdb with vortex? Thanks in advance
  7. workflow for flip fluid sim/mesh/render

    Hey! I'm wondering what could be the best workflow for working with flip fluid, from sim to render. I mean, I have the usual setup for flip fluid with autoDopNetwork, particle_fluid and particle_interior. In my very simple workflow I made 2 steps: 1- I wrote to disk my flip sim using the "import_particle" Dop I/O node under the particle_fluid node. This way I have my sim cached out, then 2- I wrote to disk the "particlefluidsurface" mesh using the "surface_cache" node, still under particle_fluid node, then 3- I render What do you think? Any suggestion? I'm wondering if there's a way of doing all of these steps in one go so I can launch the process overnight and find my sim cached and my render done the morning after cheers!
  8. Accurated mix colors in Flip

    Hello everyone ! I 'm currently working on a personnal project to experiment FLIP. I'm searching to have a realistic mixed colors in my simulation but I don't achieved to a good result. I used the hda of Jeff Wagner to mix colors in a FLIP simulation but the result is not accurate so the color is too much blurry. Here is my references . I found this render and its not far of the result I want. Here is what I have in my Houdini setup. Thank you for your help !
  9. White water issue

    I'm adding white water to a sim and the whitewater is dying by chonks not randomly based in the life expectancy. Any idea of why this is happening or how to fix it? Thanks to all!
  10. Hi, I generated a bunch of fluid particles on a wave and I used the particle fluid surface node to generate the necessary mesh to be rendered. However, on some frames, about 90% of the mesh disappears. This is pretty frustrating, Can anyone advice me on what's the underlying issue that makes the mesh flicker that way? and how to go about fixing this issue? I've attached the mov file that shows the issue I'm having right now Thanks mesh_flicker.mov
  11. FLIP smorganic/sheeter effect?

    Hi, Is there a way to achieve this effect in H? https://vimeo.com/12992186 http://www.fusioncis.com/pr_smorganic.html
  12. Flip

    Hi Everyone I want to add turbulence to flip particle but not to every particle in the container. I made a box and which ever particles come inside the box only those particles will get affected by turbulence. Can any one help me on this? Thanks Rahul
  13. Hi, Can someone help, and explain why after translating a cube up in sops, on the geometry node to postion a box on top of another box. then making it a RBD object. then simply add a deactivate object from the shelf tools, why my pivot and object change position when I jump into dops. Perhaps Im missing something silly here, anyone help please? thanks in advance.
  14. Attempting to use the guided ocean layer to simulate boat interaction in very large seas (15-30m). Getting lots of cascading down the wave face in the flip area, also some general instability. Has anyone tried this? Is this something beyond the scope of what the tool is designed for? cheers, jm
  15. apply noise to flip fluid source

    Hey! I'm trying to replicate some sort of noise on my flip fluid emission volume in a volume I can use a volume VOP to multiply the density and create some interesting shapes that change over time, but when I emit flip fluid I have this fluid source and I couldn't find a way of eroding it to get a much nicer and organic shape. I'm introducing some noise on the emission speed and that works well, and also I'm applying a mountain SOP to the original shape to break the surface, but I still miss some noise on it. Any idea? fluid_source_noise.hipnc
  16. Hello! just wondering what's the best way to gradually decrease the amount of fluid emitted by an object...is there any way of multiply the emission volume by a noise that slowly goes to 0 in amplitude?
  17. flip fluid vortex

    Hey! I'm trying to replicate an fx like this one, flip fluid (water in my scenario) creating a vortex...just wondering if anyone has an idea on where to start from, examples, hints... thanks a lot!
  18. Hi all, I'm getting strange artifacts rendering a flip simulation with the PBR shader set to glass preset. As you can see there are lots of flickering and some features of the mesh even go in and out. If refractions are turned off the problem disappears, however the desired look is no longer achieved. The problem is not present on other presets such as gold, etc. Im guessing this has something to do with how the particlefluidsurface node meshed the sim, being inconsistent with the inner features or something like that. Is this a known issue or something anyone have come across? Can you think of anything to help me resolve it? Thanks in advance, Glass_Test_s.zip
  19. Hi all, We are in need of a Houdini artist that's got a really good grasp of viscous fluid setups for a fast-paced job. Preference given to Toronto locals, but I think remote might be considered. email careers@tendril.ca Cheers
  20. pop gravity node

    Hi, I made a deformed wave and I turned a patch of it into flip object. I wanted the patch of flip to move with the deformed wave mesh, so I bypassed the gravity node. I then have a geometry colliding the patch of flip particles but the problem I have now is that, because I already made it zero gravity on the patch, the sprays formed from the collision is now floating in air. I wanted the spray and foam to be influenced by gravity so they fall back to the ground but at the same time I want my patch of flip to move along the deformed wave mesh. Does anyone have any suggestions on how to achieve this? Thanks
  21. Hi Can someone shed some light on how to render a velocity pass, from a flip fluid vdb mesh, for compositing? Here's a reference videos:
  22. Ocean mesh flickering problem

    Hi, Here is my WIP for a deformed wave. I need some feedback on this. The ocean surface is flickering quite a bit, what's causing this problem and how should i go about fixing? Is this a shading problem or something else entirely? Thanks
  23. Deformed wave WIP

    Hi, Here is my WIP for a deformed wave. I need some feedback on this. The ocean surface is jittering quite a bit, what's causing this problem and how should i go about fixing? Here's the video:
  24. Ocean sim help

    I am working with an ocean sim using flip container. I created a static object that is colliding but the water that is created as a result of the collision is very thick. Its like 5-10 feet thick instead of particle or paper thin. how do I make the water thinner?
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