fa200 Posted January 8, 2015 Share Posted January 8, 2015 (edited) Hi there! I'm currently working with VDB tools (for my project) which I'm quite new to and I'm trying to make an object rise from a fluid similar to Peter Claes' "Jam" project. But at the moment, I'm having a few problems. When converting one of my objects to VDB, the whole object is not completely showing when I combine it with another object. The second issue is that, well at the moment it looks like it's coming out of the fluid, but I want to get it more realistic. The fluid is honey so I'm not sure how to add in viscosity for example. The scene file is attached. Any help would be much appreciated! Thanks. I'm not sure why the scene file isn't being attached but there are a couple of pictures if that might help. Edited January 8, 2015 by fa200 Quote Link to comment Share on other sites More sharing options...
Sierra62 Posted January 8, 2015 Share Posted January 8, 2015 To attach a file, after you find it in the browse, you need to select the "attach this file" button. Quote Link to comment Share on other sites More sharing options...
fa200 Posted January 8, 2015 Author Share Posted January 8, 2015 Have been trying to but it seems it doesn't want to attach for some odd reason, even though It's under the max file size. Quote Link to comment Share on other sites More sharing options...
Sierra62 Posted January 8, 2015 Share Posted January 8, 2015 That is strange. So this problem you are having, is it a problem with meshing the fluid? or is it with the simulation itself? To get a better resolution you will need to lower your voxel radius. If your geometry is not closed, it will not convert well into a vdb. If this is the case try using a polycap on the wrist to close the geometry, then try converting it into a vdb object. Quote Link to comment Share on other sites More sharing options...
pbarua Posted January 9, 2015 Share Posted January 9, 2015 Do you have manifold geometry? Quote Link to comment Share on other sites More sharing options...
fa200 Posted January 9, 2015 Author Share Posted January 9, 2015 (edited) So I used a polycap which fixed the first issue I've been having thanks. Now what I need to do is basically make the fluid sort of drip as the object is rising from it. Since it's going to be honey, the drips should be long and viscous. I've no clue what manifold geometry is sorry! But I'll look it up. Edited January 9, 2015 by fa200 Quote Link to comment Share on other sites More sharing options...
pbarua Posted January 10, 2015 Share Posted January 10, 2015 I've no clue what manifold geometry is sorry! But I'll look it up. means close geometry which you have got using polycap. Quote Link to comment Share on other sites More sharing options...
edward Posted January 10, 2015 Share Posted January 10, 2015 We should be a bit more precise here between "manifold" (actually 2-manifold but the 2- is commonly implied in graphics) and "closed". The easiest way to think of "manifold" geometry is geometry where every edge as exactly 2 adjacent polygon faces. So naturally, a 2-manifold geometry (aka "surface") is "closed". However, non-manifold (actually non-2-manifold) geometry can also be "closed" in the sense that it completely encloses some (3d) volume. Imagine a cube that has an extra face in the middle that divides it into two halves. Then in this case, we have edges that have 3 adjacent faces so it is non-manifold. However, it completely closed. For VDB From Polygons, non-manifold geometry also works as long as it is "closed". In fact, you can even have disconnected geometry inside as long as you don't have any holes between the inside and outside. Quote Link to comment Share on other sites More sharing options...
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