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ejr32123

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About ejr32123

  • Rank
    Initiate
  • Birthday October 13

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  • Website URL
    evanjrobinson.com

Personal Information

  • Name
    Evan
  • Location
    Tennessee
  • Interests
    Effects animation.
  1. Pyro Problems

    Hey! I am simulating fire with pyro and I can't seem to get the shape I want. In short, my fire is lasting too long (not dissipating fast enough) and the licks in the fire are too big. It looks like the fire is being simmed at a larger space scale even though my scale is correct. I tried using gas dissipate on temperature to make the flames die faster, but it seems to get rid of some of the swirling motion. I see there is shredding, but it creates licks that are much too big. In maya, I had a space scale and then a setting called swirl. I could change the size of the swirl to get the correct lick size. What advice do you guys have? Thanks in advance
  2. Pyro error Houdini 16.5

    no one else noticed this : ( ?
  3. Use a Pyro Sim to affect another Pyro Sim

    thanks : ) I think i needed to set velocity to "maximum" rather than add.
  4. Use a Pyro Sim to affect another Pyro Sim

    Any other ideas?
  5. Volume Light

    LOL Now I feel stupid. I forgot to turn off my directional light, so the plane was rendering gray and not black. I was using a luma key in nuke to get rid of the gray ground plane! Thanks : )
  6. Volume Light

    Hey all. I have an explosion and a volume light. You can see the effect of the volume light on the ground plane. My explosion is being composited and I need this light being created by the explosion to brighten up the ground so that it looks like the second image. What pass do I need to save this light information so I can use it in compositing? Basically, I want a pass of how the volume light affects the ground. Thanks in advance!
  7. Use a Pyro Sim to affect another Pyro Sim

    I was able to do that too. The problem is velocity is going way too fast. The affected simulation seems to be affected faster than the other sim is actually going, see what I mean? Seems like its being affected by the other sim x 3.
  8. Hi, I have two different pyro sims which I want to affect each other. Is it possible to use a source volume to import one of my sims so that it can affect another pyro sim? I tried doing this, but I could not get it working. One of my sims is cached, so preferably I would want to import that cached sim into my next sim to influence it. Thanks, Evan.
  9. Micro solver mask

    Hi again, I have an explosion being sourced by particles. I have a gas dissipate micro solver to make the fuel dissipate faster because too much fuel is lingering after the explosion. However, I also have another source of fuel which is for the fire that keeps burning after the explosion has ended. My problem is that I only want the fuel from my particles to dissipate and not my fire fuel. Can I somehow limit the gas dissipation to only affect one of my fuel sources while my other fuel source remains untouched? Thanks in advance! Edit: Should the fire be a separate pyro solver? If so, how can two pyro solver affect eachother?
  10. Hey, Anyone else notice that turning on open cl in pyro solver creates an error after updating to houdini 16.5? All you have to do is use one of pyro's presets on the shelf then turn on open cl. Is this a bug or is there actually something wrong? thanks
  11. Gas Disturbance vs Gas Turbulence [solved]

    Thanks, you are a genius! For gas turbulence, setting threshold to 0 did not work but any negative values work. Also, I should have known to check the check box for field is vector!!! Thanks again
  12. Hi, In my pyro sim, I just want to add some velocity in the container before my smoke begins emitting. I could do this by creating a box and using fluid source and adding curl noise. I did not really like the results, so I decided to try something else. I tried adding a gas turbulence and turned on the velocity visualizer. However, gas turbulence doesn't seem to affect the container until density enters the container. I tried gas disturbance. Disturbance did add velocity to the container, but I noticed the field set to disturb was "temperature". I changed the field to disturb to velocity and it stopped working. Why does the temp field work but not velocity? Why doesn't the gas turbulence not add velocity until density enter the simulation? Thanks
  13. Pyro Viewport Lighting Problem

    @marty Ah! so it is a bug then. I thought I might be doing something wrong. @djiki Your fix worked for me!!! Well, this is what Sidefx said: Hello Evan,It is because there are no lights in DOPs. DOPnets are in their own world, devoid of lights, cameras, etc. You need to look at them as objects or SOPs in order to see the scene lighting.We have an RFE in place for this (#63105)
  14. Pyro Emit Smoke Problem

    Hi, I have an explosion, but I cant seem to get the look I want. I want the initial blast to just be transparent fire then as it cools down become smoke. I turned on create dense smoke and adjusted the heat cut off so that smoke is only created once it reaches a certain "coolness". However, that heat cutoff function doesn't seem to work. It always emits smoke, it doesn't seem to wait for the heat to cool down before it creates smoke. As a result, there is wayyy tooo much smoke early on. So much that when you render it the smoke is over powering the fire. What can I do to just have flames then smoke as the fire cools? Here is a good example: https://vimeo.com/156039861 Thanks explosion002.hipnc
  15. Hi, Not sure what is going on here, but if you create a dopnet inside a geometry node, scene lights wont affect pyro in the viewport. If you back out of the dopnet, then you can see the light affecting pyro. However, if your dopnet is at object level lights will affect pyro. Why can't my dopnet be inside a geometry node and have the scene lights affect pyro so I can see whats going on? Photo 1 is inside the dop net. Phpto 2 is inside the geometry node but outside the dopnet. Thanks smoketho.hipnc
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