lemmingsammy Posted February 5, 2018 Share Posted February 5, 2018 HI All, So i have tried multiple techniques to try and fill a volume with an imported obj and but I'm not succeeding (the obj needs to be FEM). The closest I have got so far is with a simple setup.... an add node , jitter and a point wrangle that generates a point every few frames, then with a copy node I assign my imported obj onto the emitted points. SIMPLE....HOWEVER this works fine with a cube or sphere etc but the problem I've found is that as i have to use a tetrahedralize after the copy sop so that the solid object works, my imported obj doesn't work at all... and my OBJ dissapears entirely. Does anyone know why... A) this is happening or b ) is there a simpler way to do this? Thanks Quote Link to comment Share on other sites More sharing options...
Atom Posted February 5, 2018 Share Posted February 5, 2018 (edited) Your OBJ model may have a hole in it. Can you convert it successfully to a VDB? Try dropping down a VDBFromPolygons after the File node that imports the .obj. Edited February 5, 2018 by Atom Quote Link to comment Share on other sites More sharing options...
lemmingsammy Posted February 6, 2018 Author Share Posted February 6, 2018 Thankyou ever so much for the reply! that was easy.... However doing this it causes a small problem. the first being. as its a relativley high poly object its really hard to get it back to its original shape after converting to VDB and convert back to polygon/polygon soup. Thank you thought! Quote Link to comment Share on other sites More sharing options...
Sustaxata Posted February 6, 2018 Share Posted February 6, 2018 If its just about fixing the holes in your polygon, maybe a ployfill will make it compatible with the tetrahedrahlize. Quote Link to comment Share on other sites More sharing options...
lemmingsammy Posted February 6, 2018 Author Share Posted February 6, 2018 Thanks for the suggestion! I tired that, but the result gave me overlapping triangles, which can be fixed using marked polygon intsections mode, but the result is that my solid object DOP noo longer works. Quote Link to comment Share on other sites More sharing options...
midicon Posted February 7, 2018 Share Posted February 7, 2018 If you are trying to get a watertight mesh you can add a divide node after your geo, and check on remove shared edges. Then merge your geo and the shared edges and add a fuse node. Quote Link to comment Share on other sites More sharing options...
lemmingsammy Posted February 8, 2018 Author Share Posted February 8, 2018 midicon, fantastic tip! Quote Link to comment Share on other sites More sharing options...
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