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  1. After a week of tests and plowing thru tutorials the attached is where I am at. I need to get more of this look https://www.istockphoto.com/video/detailed-realistic-animation-of-rocket-launch-gm1302287470-394073982 Any tips or suggestions on what I should try next? This is w...
  2. Hi , I have a hero building destruction sim, I need to create dust smoke sim for it, the problem I am facing is caching, I have three fields (temperature , density and vel). In render , I need density and vel fields, so I deleted temp field and I deleted vel field where there is no density, I use py...
  3. Hello everyone, I'm working on a very specific earth/ground blast. Inorder to keep the max control I decided to create pre sim wich would be used as a source for the main simulation later. Or I'm going to build it in directly and blend it with a pyro solver over time. Anyways, the goal of my se...
  4. Dear Forumers, I need a layer to comp for my shot where the floor is lit by a pyro sim that gets REALLY close to it (actually touching). I am using Karma for this project, but understand I MAY have to use Mantra????? Thanks in advance for help =) Nick
  5. Hi,everyone! I'm working on a ground explosion test and come across a few problems: the first few frames is important to me, I want to emphasize the expanding effect, so besides adding divergence, I also set keys on the fuel sourcing geometry‘s scale, but that seems to blur out the fire into a hot...
  6. Hey everyone! Finally finished my newest personal Houdini project and thought it was time to post it places! This was probably my most render time heavy project so far but happy with how it turned out
  7. Dear Forumers, I thought my .hip was not necessary as there maybe an easy answer here I am missing. I have a pyro sim that seems to be cropped by the bake volume node. Why? This happens even when it is dense. I am thinking it's the bake node because if I display flag the pyro b...
  8. Hi I am Vu Pham from Vietnam. My FX Showreel, destruction fx, water fx, particles, explosion, .. Thanks for since update my portfolio here, I got 2 animated feature in working as remote freelance works, 1 is large scale and other is magic, both job are amazing keep me busy more than month....
  9. Want to have multiple explosions in your shot? Let's populate them! Why go through the trouble of simulating each Fx when we can just populate a scene with a few! The Populate Toolset is a comprehensive HDA (Houdini Digital Asset) Toolkit designed for intricate control to populate a scene with v...
  10. 5DNick

    Pilot light sim

    Dear OD Forcers, I am attempting to make a pilot light for a kind of flamethrower for a shot I am doing. Upon Googling, someone said don't use Pyro, do it all in SOPS: but I went ahead and managed to get, I dunno(?), a half decent sim [there are other reasons I want a sim but...
  11. Houdini FFX Collection Get it here: Gumroad: https://davidtorno.gumroad.com/l/ffxcollection FFX Collection is a collection of scene builds and techniques for the intermediate users of Houdini. Those looking for quick setups, wanting to get more familiar with VEX use cases, and wan...
  12. Hi, I was wondering how to approach this effect since I tried an approach using particles on a flip solver and on top of that adding a pyro simulation to recreate the mist. But I'm having trouble to achive the "cone" look (attached image) since it keeps spreading and losing power while the part...
  13. Hi guys! Can somebody point me which are a the steps to guide the heightfields with pyro like in this example: https://www.instagram.com/p/Cwxgh43N7GG/?img_index=5 Is there anyway to advect heightfields with pyro or they're just using the pyro sim as a mask and the shapes are just an anim...
  14. i want to break the smooth, mashroom like shape off, when the mashroom shape get rough enough, stop break. my solution is to add a Gasdisturb to simulation, to get rid of the mashroom like shape, and the strength of Gasdisturb decays with temperature. But there's a...
  15. Hello guys I'm using the shelf tool bonfire. As I'm said on tittle, the pyro volume bake doesn't write the Alpha. I'm build the whole look dev shader using this node. And cannot figure out how to have that. Please help me. pyro_alpha.hipnc
  16. Hi guys, In a Pyro simulation, I would like to retrieve the gradient of a field like "density", and then apply the velocity to a range of it (for example where density is 0.2). I tried to use the gradient mode of the "Gas Analysis" DOP, without success I would appreciate any i...
  17. We need to do a similar effect in the project, but I don't know any good way to simulate it. I feel it is difficult to control only by parameter adjustment. This effect needs to be layered inside, from the very small edge at the beginning, to a large number of small tumbling in the back, as well a...
  18. I have a problem of pyro simulation. You can see the noise (artifact) on the source of the flame. I would be happy to look at the project file and correct it! v002.hipnc
  19. Hi! Does anyone have any tips for creating this kind of steam effect? https://www.youtube.com/watch?v=LZYLoVCikqo&ab_channel=VeteransRailroad (around the 0:20second mark) I'm trying to recreate super fast moving, high pressure steam coming out of a pipe about 0.5m in diameter. I've play...
  20. Hi.. imagine yourself inside a car the car moving and inside the car you are pouring water inside a cup or maybe holding a candle, even if the car is moving the force of the liquid is locally compared to the car's motion. I have a character moving where I want to emit particles around it b...
  21. Hi guys, I would like to get rid of the mushroom effect and add more and more small details to my pyro sim, but I don't know what parameters or fields are responsible for this. I tried "Disturbance", "Turbulence", "Velocity", "Gas Disturb", and "Gas Project nondivergent", ... without succe...
  22. Title is a bit misleading.. I realise Pyro volume simulations don't really have a birth and death point, but what I'm hoping to achieve is to be able to colour or alter the transparency of my fire closer to the base or emission point of the fire. Currently my fire is looking really nice, apart...
  23. Hi gang ! I'm stumbling across a weird issue and I'd sure like to get some insights about this. I'm trying to color a smoke simulation (having seen Steven's volume III course). But I'm getting a weird issue that I can't wrap my head around. Basically my color field gets contaminated and the di...
  24. Hello folks, Is there a way, to somehow force the particles to move like in the picture I drew? not completely from the beginning of the simulation but after a certain frame?? I would really like to re-create a rocket exhaust effect, when the rocket climbs higher into the atmosphere,...
  25. Hello All , iam trying to create a dragon fire but i have some issue with the pyrosolver 1) Its creating a trails like fire 2)how to bring the shape of the reference that i had added in this post(need some insight) 3)what is blocking in pyro Min substep 4 Max substep 8...
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