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Found 11 results

  1. sim bounding box of pyro trails

    hey I'm trying to set up a missile trail, and started from the shelf tool I encountered an issue due to a strong wind I'm applying. basically the sim is going out of the bbox of each segment of the trail. Is there any way of letting the sim going out of the original bbox size? cheers!
  2. Stylised Trails

    Hi Guys, I need a little advice. I am trying to create trails that have a look similar to the image below. My initial thought was to scatter points on a circle with an initial velocity and then advect them through a volume using curl noise...before using an add sop to group by id (Hip file attached). I am having difficulty trying to replicate the look and feel of the trail animation in the video below at 0.24. The trails appear very wispy and almost fluid like. If someone can help point me in the right direction that would be greatly appreciated. Many thanks, Clive Test_Curves.hip
  3. Happy Friday, I'm trying to replicate this long exposure effect. It was done by taking a series of long exposure shots then re composited in post. I've gotten pretty close by doing a trail and forcing velocity over them to create the blurriness but it's not close enough... I was wondering if anyone had any good ideas or a closer solve for this problem. Any help is appreciated! Thanks,
  4. Mesh Trail Clothlike Effect

    Hey fawkes! Any Ideas on hot to achieve something like this? Been thinking about using some emission group with a POP and some trails. My doubt is how to mesh the stuff and give it the subtle cloth dynamics. Maybe a Geometry or Point Vop with a noise. How about UVs here? Any Ideas? Cheers!
  5. Hi guys, I have attached an image of what I am looking to create.... I am assuming it will be done with partical trails but I was wondering if I can control the density with attractor points somehow? Does anyone know how I can create something that looks like this? Thanks!
  6. Hi this is a newer to Houdini, as the topic suggested, how can i avoid my curl noise trails ending in a point ? i want them keep flowing along the surface, is it possible? Thanks! curlnoise_trails.hipnc
  7. fill mocap volume

    Hi all, I'm working with some mocap meshes that I'm trailing particles over using the 'minpos' technique in POP VOPs. I'm getting a little stuck though, as when i make trails of the particles, these obviously trail behind the mocap as the keep their birth XYZ coords. What I'd like to achieve is that the trails adhere to the surface of the body/geo in the same way that the particles do, so i end up with something like 0:24 > 0:26 of the attached video. Maybe I need to do something within a sop solver? perhaps dop pop is the completely incorrect way to go? Any hints or tips greatly appreciated - I've attached my .hip here should anyone have the time to take a look! Thanks! (hints on filling the volume as-in the video will also be met with rapturous thanks... I'm not even sure where to start with that one.) surface_particles_trail_test.hip
  8. Volume trails to text?

    Im still new to houdini but Ive created renders using volume trails after following a couple of online tutorials. For example, my render is the one with the trails running over the white surface. If you look at the one done with the blue background (created by the guys over at Deskriptiv.de), they have somehow gotten the trails to form to the numbers 05 13. It looks super cool and im not quite sure how they did this. If anyone wants my scene file, I have uploaded it but im sure most of you on this forum know how to create the effect. Rendered in octane. dopecurlsvolume.hiplc
  9. Hi there, Very new to Houdini, I am looking to export volume trails into Cinema 4D, weather by exporting the points or turning the points into splines and then exporting, as long as I avoid geometry because it's dense. Also, I do not have the Houdini engine. Any ideas on how this can be done?
  10. How to reproduce this smoke effect?

    Hey everyone! It's been weeks since I'm trying to achieve a smoke effect without any success. The reference is available in this video from 0:40. From my computations, this has been shot at 100 fps. The video compression is pretty bad so here are 2 frames extracted from it with a slightly better quality. I can deal—probably badly—with making linear smoke trails like it is the case in the first frame but then how to transition to a more cloudy shape, especially in such a short period of time? I've tried many things including creating a particle sim to use as velocity source and playing around with the dissipation, disturbance, turbulence, confinement, and other shaping nodes, but I didn't get anywhere near this reference and I'm currently clueless as what to try next. Firstly, and since there is no fire involved, am I right to try to achieve this effect using only the smoke solver, without any combustion? Secondly, I'm struggling to figure out what's really happening in this reference. When, where and for how long is the smoke being emitted? What kind of velocity is being applied? Or in other words, what am I supposed to input as source volumes? I've attached a scene with my starting point for the smoke sim. Where should I go from there? I realize that it's a lot of questions but I'll be happy with any help at all to reproduce this effect. Bonus points for step-by-steps or a scene with a basic setup that I could analyze! Thanks! PS: I've left a fair bit of my setup in the scene so feel free to criticize it! smoke_impact.hipnc
  11. Candle Flame Thin Smoke

    So I know there is a "Wispy Smoke" shelf tool in Houdini, but it's not really what I would expect. If you've ever blown a Candle out before (and I've done this hundreds of times the past week for Lookdev, heh) you know that the smoke that briefly trails out of it is VERY thin, precise and almost made up of lines. I have an image in my head of a few particles floating upwards from my "wick" in a sort of random, noisy direction and then using a Trail SOP to cause them to streak, hopefully looking like smoke, but... I'm not sure quite how to achieve this, or rather how to have it look like connected smoke instead of just lines streaking. Is there a way to cause 2 of the particles to "connect" and stream together, and make it look more like an opaque ribbon (or... you know, smoke...)? Furthermore, is there a way to have the Trail effect appear in the viewport on my particles (as a line/ribbon)? Cheers and appreciate any tips or suggestions for a basic "Candle Flame Smoke" effect. Simple is best - just learning Houdini.
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