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Found 83 results

  1. Floating Fountain

    A passion project re-using footage shot a few years ago. The water is split into two sims: the first covering the sphere and the downward stream, the other filling the basin and overflowing around the sides. A total of over 7 million particles make up the fluid sim. Software used: Houdini Redshift Nuke
  2. Recent work from Chinese animated feature 哪吒 (NeZha), I was responsible for creating and rendering of the water effects using Houdini flip to build a guided system for water and render in Mantra, final compositing done in Nuke.
  3. Floating Fountain WIP

    I've been remaking this old shot I had worked on 3.5 years ago, taking the old footage/files and completely reworking the sim, render and comp. Feedback welcome
  4. Hi Everyone, I'm a student and I'm working on a project in which I need to recreate a scene similar to a Venice's canal. So I'll have buldings on both sides and water between them. There will be also a flying object that will fall and collide with water. This is the first time I work with water inside Houdini. What I need to know is what is the best workflow? I'll create a custom geometry in Maya for the container of the water, it will be an irregular shape. How do I set it as a container? Since there will be a collision, I think the best solution for water is to use FLIP fluids, right? Also if I use this way I will have many particles, so what is the best way to proceed in terms of memory, simulation and rendering? Attached you can find a really rough sketch of the idea. Thanks in advance.
  5. Hi there everyone. I am having a really strange issue with my river scene when I render it out. The reflective of the water seems to turn on and off randomly. I then did some further testing and found it to be the interior Volume giving me issues but this only happens in the center section of my River, the Top and bottom are not affected by this problem. Below I have two Images to show the result of the Volume issue which is consistante on these two Frames even if I re-cache the Sim Frame 350, the Volume in the center is really Thin. Frame 357, the volume is much Thicker in the center. Please check out the Link HERE for a low quality render with a few frames on Vimeo. Password : JodysFX I feel like there is a setting I am not turning on or a value thats two low. It might be in the Surfacing node but I am not sure, I will continue to test. Any help is greatly appreciated.
  6. I'm in the middle of creating Whitewater particles for my waterfall sim and after caching out the particles and converting it into a volume it looks extremely low res considering there is over 300,000 particles and 8 million Voxels. Not sure what i'm missing but any help would be greatly appreciated. Thanks in advanced.
  7. Caching out Water Simulations

    So i'm trying to Cache out my water simulation, I've cached it out previously as a VDB, yet my file sizes are just below 800KB. It's a rather small simulation but i assume that's wrong. How do i go around fixing this issue? WhiteWaterSim.hipnc
  8. I was trying to make a river to learn how to use FLIP Fluids and Houdini in general. I came across a tutorial and followed up, but when I tried to apply that tutorial to the geometry i wanted to it didn't work the same i look more like an ocean or a lake. Also here is when i realized that the tutorial only works correctly on a straight path along the X Axis. When tried to do it in other direction the sim still goes in the X Axis instead the intended direction. Can somebody give me a hint or some help on how to correct this? Or maybe an idea on how I can do this? Thanks in advanced. River.hipnc river.mp4
  9. Cascading Waterfall Advice/Help

    I'm currently doing my FMP for University and will be working in a group of 4 to create an environment with a character asset and Waterfall/Lake FX asset within it. I will be solely responsible for creating the waterfall/lake but I'm currently unsure with which way i should approach the project. The Waterfall is going to be in the background cascading down some rocks into a lake in a cave however we will be creating the cave to real world scale which has caused problems when trying to set up emitters at such a large scale. I've attached some reference photos of what the waterfall is going to be based on as well as the initial proxy geometry created for my particles to flow over. I was just wondering if anyone here has any experience with a sim of this type/scale and could lend any advice on how they created it. Thanks RocksPrim.obj
  10. FLIP unstable border particles

    I am trying to get a calm puddle, and I have managed to achieve that in most of the fluid. Still, I can't get rid of this moving particles at the boundaries.... I've tried deleting them, but new ones will start moving until they get there... puddle_02.mov
  11. Dear community, I am currently playing around with heightfields in H17 and would like to create a little island for Unreal or Unity3D. I am using the erosion filter to generate shape-features as well as water and debris masks. I really like the distribution of water areas for rivers and lakes. However, except for distributing fluid-particles around these regions and performing heavy simulations which I could bake to meshes, I am out of ideas. Especially in non-planar areas I don't know any technique that would create realistic water surfaces. For a game-engine I would usually just need the top surface parts of the water. Does anybody have an idea on how to achieve that? I am thankful for any feasible approach or idea. Best wishes, Nicolas
  12. Hi Guys, I try to simulate a quiet river. But I got the problem that in the areas where the water is not moving at all(or is really really slow), it is moving up and down all the time and looks like little hills. It is not flat what you would expect.I know it is possible to do with other programs but has anybody a solution for houdini ? I tried already the swirl kernel, a sop to settle down the y axis(based on velocity) and a blending with a simple grid based on the velocity. Is there an official way in the simulation process? I am thankful for any advice
  13. Hello! I've been trying to render this scene but it is over my head when it comes to render the ocean from a bottom view. How'd you go about rendering this ? I have the standard small ocean preset created, created a simple hdr and fliped it. I also tried reversing the normals from the render grid so the displacement goes the other way around. Someone can give me a headsup ? Found this example aswell
  14. Hi There! I am trying to transfer my smoke and water sim from Houdini to Unity but I am very lost. Any ideas?
  15. Looping FLIP Fluid Sim

    Hi, I'm trying to loop a FLIP fluid simulation, it's a simple water container with various floating objects interacting with the water. I need to loop the sim and didn't have any luck with the "Make Loop" node from the Games shelf. Anyone know how to get this to work with a fluid sim? Thanks!
  16. Hi all, I am trying to make a whirlpool effect and i am doing it by creating a circle and then copying it into itself creating a for each loop where every smaller circle rotates faster than the previous then copying it downwards and tapering it to make the typical "hole" that is formed. I previously made a mistake where i copied the volume created from the effect and put it as the source of the water and got it working but the surface water was stationary, now that i have the surface moving but when I let the effect run it only "spins" the top layer of the water and doesn't go any deeper into the water , any tips? or any help would be appreciated. Whirlpool13.hipnc
  17. WATER DRIP

    Hi, I've been trying to make particles slide down a vertical surface but I want them to stop for a second while in motion, and then continue sliding again. I guess, I badly need help with this. Can anyone help me out ? I've tried animating the response feature in POP Behavior Detect but didn't work out. Each particle should have its own movement. Regards, David
  18. Hi Guys! So i'm trying to do this simple flip sim where i have an emitter inside a teacup and i just want to fill up the cup. It's is definitely water tight, the only particles leaving the cup are over the top, but as you can see from my flipbook the particles just start multiplying on their own when they land in the saucer, which is causing them to go everywhere. It is worth mentioning as well that the particles are only set to emit between frames 0 - 24 so i'm not sure why they're multiplying. Any suggestions as to how to stop this would be really appreciated! Password: hc
  19. Liquid Titanium

    Hey guys Any idea how one would approach an effect like this? flip sim with high viscosity and directional force? I would love to do a similar effect with more compliacated geo. Thanks!
  20. Hi, Would like to know how this effect was being done, please throw some ideas or simple set up. this is the link: test_wave.hipnc
  21. Hi guys! I would like to share here my latest personal project. Everything done in Houdini and Mantra Hope you like it. Youtube Version: Shark_Youtube.mp4
  22. Hello. I'm sorry to disturb you because you're not my native language. Can't you give time shift in case of ‘white water’? So, how do I work with “slow motion”? I'm sorry to disturb your language. RND_Slowmotion.hip
  23. Hey magicians, I'm getting crazy here. I have a FLIP setup wich I did a compress cache, when I jump into white water it works fine. I send the setup to my client, he run the sim for compress cache, but for white water he is getting only in the waterfall and not the river. I think it has to be with some groups. Here's an image to illustrate the issue When I go to "White wate source > Out" the ww shows ok for both mine and client, but in white water import I get this, any tips to fix this? I can't make him run the sim again since we are almost in the deadline. Thanks
  24. Bending control

    A few months ago I was watching “Avatar, the last air bender” for like 5ft time and wanted to create some bending control, I'm still working on the water bending, so here's a WIP from this weekedn. Right now there's only to WIP, but will keep on with this until I master the 4 elements! https://vimeo.com/286783260 [vimeo.com] https://vimeo.com/272510944 [vimeo.com]
  25. Hey guys, I have a flip sim with particle div. at 0.03. Cached the compress and surface. So far all good. Now when I generate the white water, there are frames that go up to 3 gb (and its incremental), any tips for optimizing this? Some stuff I tried: - Creating a bound by object group, to delete particles that wont be used This optimized the size to almost the half Size comparison Another thing I tried is splitting up the "bubbles + foam" and "spray" in different bgeo files And finally I tried reducing the birth in white water solver as well as lifespan parameters. Is this normal? the size of white water tends to be big and increments over time? Any tip will be helpful, I have like 300gb for 1/4 of the animation just on white water
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