jesschaco Posted September 14, 2011 Share Posted September 14, 2011 Hi All! I have a scene in which drops of the fluid drip from a table edge. When the drops collide with the cg carpet (made by the fur sop ) , it will start to expand in volume as it travels in a guided direction. As the head of the fluid blob travels through the guided directions, the tail of it gets absorbed slowly into the carpet. I originally used SPH fluid, but it doesn't seem to detect the fur for collision (it just collides right through the wires). I figured in order to get the level of control that I want from the fluid, I'd have to simulate this with pops. I was wondering what approaches should I make in order to accomplish the kind of absorption I described above? Much Thanks!!! Quote Link to comment Share on other sites More sharing options...
Macha Posted September 14, 2011 Share Posted September 14, 2011 Can you use attributes on the fur to advect the fluid's flow? Quote Link to comment Share on other sites More sharing options...
jesschaco Posted September 14, 2011 Author Share Posted September 14, 2011 Can you use attributes on the fur to advect the fluid's flow? hmm....not really sure what you mean by that ....Can you elaborate? Quote Link to comment Share on other sites More sharing options...
Macha Posted September 14, 2011 Share Posted September 14, 2011 SDF is not always the best way to get collision-like behavior. Especially with smoke and fluids it can be useful to get in normals or velocity to push away smoke/fluids. Quote Link to comment Share on other sites More sharing options...
smaugthewyrm Posted September 14, 2011 Share Posted September 14, 2011 here is a lesson that involves fluids and fur. maybe something in it will help bro. -----> 3d World Fur Lesson LINK Quote Link to comment Share on other sites More sharing options...
jesschaco Posted September 14, 2011 Author Share Posted September 14, 2011 here is a lesson that involves fluids and fur. maybe something in it will help bro. -----> 3d World Fur Lesson LINK Hmm...I have tried the tutorial a month ago, but it only deals with attribute transfer to achieve wet hair clumping and color changing effect, not the fluid hair collision I was talking out.... I wonder if I could use some kind of erosion of the fluid surface to mimic the water absorption... Quote Link to comment Share on other sites More sharing options...
Netvudu Posted September 14, 2011 Share Posted September 14, 2011 maybe this is a bit obvious, but...are you using a Fluid Force DOP? I know many people forgets it, and it´s the only way to get FLIPs and SDF fluids to interact with deformable objects...not sure about SPH though... Quote Link to comment Share on other sites More sharing options...
jesschaco Posted September 15, 2011 Author Share Posted September 15, 2011 maybe this is a bit obvious, but...are you using a Fluid Force DOP? I know many people forgets it, and it´s the only way to get FLIPs and SDF fluids to interact with deformable objects...not sure about SPH though... I see! didn't know there was such a thing until now!! Thanks so much, I will give it a try!! Quote Link to comment Share on other sites More sharing options...
ikarus Posted September 15, 2011 Share Posted September 15, 2011 i would avoid using the fur in the simulation directly and instead use an SDF to determine whether particles are in the fur "zone" then add a force which pushes the particle towards the surface for a sticky-effect Quote Link to comment Share on other sites More sharing options...
jesschaco Posted September 16, 2011 Author Share Posted September 16, 2011 (edited) i would avoid using the fur in the simulation directly and instead use an SDF to determine whether particles are in the fur "zone" then add a force which pushes the particle towards the surface for a sticky-effect With SDF...hmmm... What should I use to create sdf for fur? With iso offset? BTW, this is a reference video of the water spill: Notice that the fluid sinks in (or gets absorbed) with various speed. I wish to simulate my scene's fluid to the movement of the fluid in the video as closely as possible. Except that my scene's fluid is some kind of magic fluid that it keeps traveling and expanding in guided directions......... Edited September 16, 2011 by jesschaco Quote Link to comment Share on other sites More sharing options...
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