Hey guys,
I am a beginner in Houdini working on a project to achieve a glaze dripping effect on pottery. I want the pots to look like the reference image attached. I am attempting to simulate liquid in Houdini to create that outer layer of the glaze dripping. The problem is the fluid is too thick, it is not sticking to the surface of the pot, and its not dripping in that nice tear drop shape that is in the reference image. In the reference images the glaze drips down the body of the pot at the bottom. In houdini the liquid starts to fall towards the floor. I want the liquid to drip down the curve of the pot (until it reaches the bottom of the base). I have to apply this effect to a variety of 3D models (pots). What am I doing wrong? Is this the best way to achieve this type of effect?
Any tips would be appreciated, been stuck for a while! I attached the hip and screenshots.
glaze dripping effect on pottery
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- causticsassets
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- madorjan
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Hey,
I have a couple of ideas you could test, sadly I don't really have the time to figure out the best myself.
1) Instead of using gravity, you could have a focused gravity at the bottom of your pot, that tries to suck the fluid towards it. Or if you want to include gravity, just create an extra force that sucks the fluid inwards on the x and z axes.
2) You could also use a second ghost collider around your pot that is the same pot, just slightly larger. This would create a narrow path the fluid can flow down.
3) I think there are collision behaviour options in the flip solver itself, or you could play around with those.
I'd personally test 2 first, that sounds like a fun, non computing-intensive way to create the effect, even if it feels like cheating the sim a bit.
I have a couple of ideas you could test, sadly I don't really have the time to figure out the best myself.
1) Instead of using gravity, you could have a focused gravity at the bottom of your pot, that tries to suck the fluid towards it. Or if you want to include gravity, just create an extra force that sucks the fluid inwards on the x and z axes.
2) You could also use a second ghost collider around your pot that is the same pot, just slightly larger. This would create a narrow path the fluid can flow down.
3) I think there are collision behaviour options in the flip solver itself, or you could play around with those.
I'd personally test 2 first, that sounds like a fun, non computing-intensive way to create the effect, even if it feels like cheating the sim a bit.
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- mestela
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Or not flip? I'd look at Konstantin's great example of proceduraly generating stuff that looks like flip/pop fluid tendrils, but its all modelling tricks. See if you could apply some of those ideas to your vase. Thinking you'd model this gloop using Konstantin's techniques, then attribtransfer colour from that back onto your vase:
https://procegen.konstantinmagnus.de/liquifying-geometry [procegen.konstantinmagnus.de]
https://procegen.konstantinmagnus.de/liquifying-geometry [procegen.konstantinmagnus.de]
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