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About richard_mcd_green

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    Richard Green
  1. Pyro Temperature Field Banding

    Thanks, I'll give these a go.
  2. Pyro Temperature Field Banding

    Hi guys. I'm trying to render a candle simulation using the temperature field, but my renders are getting noticeable colour banding. Looking at a cross section of the temperature field in the Pyro object node, there is clear banding. I'm wondering if there's a way to give this field better interpolation without changing the overall shape of the simulation? I've attached a picture of the temp field and a render. Thanks
  3. Turbulance Pyro Help

    Hi, I'd like my pyro sim to apply turbulence only to areas of the pyro sim already affected by other forces, is that possible? I have a collider passing through it and I'd like the turbulence only to affect the parts displaced after it passes through
  4. Hi all, I'm trying to produce a cotton candy style render, and I found this tutorial for doing it with volumes in Modo: https://www.3dartistonline.com/news/2014/01/how-to-create-clouds-and-candy-floss-in-modo/ Does anyone have any ideas on recreating this look in Houdini? I've tried various types of noise in a volume vop, but nothing seems to get anywhere close. -Richard
  5. Using detail attributes in transform sop parameters.

    This worked, thank you
  6. Using detail attributes in transform sop parameters.

    Sure, here you go: legofire3.hip
  7. Hey, Basically, I want the transform node's Scale Y parameter to be driven by the detail attribute @scaley of the geometry going in to it. I've tried just typing @scaley into the sy parameter but to no avail, it just feeds back 0 when I hit toggle expression. How would I go about doing this?
  8. POP collision not working properly

    Hey Atom, Thanks for taking a look, I didn't know that about merge nodes or the object merge, so that's really useful! However, the problem was persisting once I added back in my other pops and popwrangle. I eventually worked out that the problem was coming from the wrangle, it was setting the max pscale to 1.3, which was way to big for the scene hence the instant collisions! I hadn't noticed because my geo was copying onto the particles at a decent size, but that is because it was small to begin with. However this is now fixed!
  9. POP collision not working properly

    Hi, I'm trying to collide some particles with a simple collision object and a ground plane, however whenever I enable the collision objects in my scene the particles seem to be colliding in midair instead of with the objects. The collision preview looks fine and I've tried adjusting the collision tolerance of the particles but to no avail. the sim works when I bypass the collision objects. Any idea why this could be happening? sim.zip
  10. Volume Sample RBD collision behaving oddly

    Hi, I have an RBD simulation that drops petals onto a piece of terrain. I've created a collision SDF for the geometry, but for some reason it is behaving strangely and the petals are colliding above the surface, even though the Collision Guide looks fine. Is there something I'm missing here? http://oi65.tinypic.com/2zrp2y9.jpg Shot3.hipnc
  11. Flip Fluid collapsing in Bowl.

    Thank you so much for taking the time to look at this! This is really detailed and useful!
  12. Flip Fluid collapsing in Bowl.

    Hi, (Disclaimer, still pretty new to houdini) I have a flip simulation that's intended to be a bowl of milk. I want the bowl to be full and to just settle until it's affected by outside forces, but the fluid just instantly collapses to a fraction of it's overall size, even with gravity off it just compresses in on itself. I've tried reading up on this problem online, and have tried various solutions such as disabling reseeding and enabling separation, increasing and decreasing the particle separation and grid scale, but nothing seems to work. Would someone mind looking at my file and telling me what i'm doing wrong? It's driving me up the wall and it's preventing me from completing class projects. Thanks, Richard Advert.zip
  13. DOP network not working.

    Hi, Could someone explain to me why my DOP network isn't working? I'm not sure what's wrong with it, but nothing is interacting, even the gravity isn't having any effect. I'm pretty new to houdini, and in all likelyhood I've set something (or multiple things) up wrong, so if anyone can help me out it would be very much appreciated Thanks, Richard shed3.hipnc
  14. Help with attribute interpolate

    Hi, I'm pretty new to houdini, and I'm trying to scatter points onto and inside a moving character that I imported via alembic. I'm doing this via converting the geometry to a volume using isooffset and connecting that to the scatter node. I know how to make the scatter points stick to the surface of a moving object using attribute interpolate, and that works fine, but when I try this method using the volume it results in only a single point being visible. Is there any way to fix this? Thanks, Richard