thanks Christopher! I tried using divide + the scale/rescale stuff...even so I'm still not getting 100% reliable results as you noted.
On top of that there are many issues with alembic importer in softimage.... It is buggy and hangs/crashes randomly (with the fractured meshes coming houdini I have to say...didn't have any troubles like that in other scenarios) Ok. so here is an overview in case anybody else needs to transfer houdini fractures back to softimage: - .obj always import ok (doesn't crash), but internal faces are always disconnected - .abc imported through built-in importer sort of works (a progress bar hangs at viewport, I have to click cancel, but everything is there). Welded faces, which is nice, BUT messed up (stretched) UVs in some spots. Also, it introduces all kinds of wierdnessess in the scene, so totally not recomended. - .abc imported through exocortex crate works reliably (doesn't crash, no buggy behaviors). Welded faces, BUT no UVs (well it comes with a strange UV that is not usable). Retains inside/outside groups from houdini (stored as clusters) which is a big plus So in the end the "easiest" way I found to transfer these meshes is to export data as alembic through the ROP Alembic Output node (ogawa or whatever, does not really matter), then import into soft with crate and finally transfer the UVs using gator. (yeah terrible for dense meshes). 2016-12-06 12:36 GMT-02:00 Christopher Crouzet < christopher.crou...@gmail.com>: > For information, I also had issues with the Voronoi SOP creating a > suboptimal mesh output (disconnected points here and there) and found that > the scale of the object can greatly influence the quality of the fracture. > So just crank up the scale to reach a bounding box of around 100-1000 units > (don't go too high or this might cause floating-point issues), apply the > Voronoi SOP, and revert the scale back. Another helpful thing to do, as > recommended by SESI, is to avoid an input geometry with non-planar faces by > inserting a Divide SOP before the fracture. > > Well, even with these 2 tips it still might not work depending on the > input geometry. > > > On 6 December 2016 at 21:29, Fabricio Chamon <xsiml...@gmail.com> wrote: > >> ok solved exporting through a ROP node instead of file node. Now alembic >> imports fine and all faces are good. =) >> >> 2016-12-06 12:15 GMT-02:00 Fabricio Chamon <xsiml...@gmail.com>: >> >>> Well, unfortunatelly soft crashes everytime I try to import this alembic >>> mesh from houdini... so I went for objs. >>> >>> And I'm afraid I can't merge them in Soft because a) it will take quite >>> some time as the whole geo is dense and b) I'd have to leave a gap between >>> the pieces or else any adjacent pieces would get merged together... and I >>> want them to be single pieces. >>> >>> is that an export thing ? Because it works nicely inside houdini... >>> >>> 2016-12-06 12:07 GMT-02:00 nikaragua86 <nikaragu...@gmail.com>: >>> >>>> hi, i had the same issue, exported simulation from houdini to maya with >>>> alembic, i just merged vertices in maya >>>> >>>> 2016-12-06 17:00 GMT+03:00 Fabricio Chamon <xsiml...@gmail.com>: >>>> >>>>> Hey gang, >>>>> >>>>> I'm doing a voronoi shatter in houdini and want to bring the result >>>>> back into softimage (exporting .obj to Soft 2015 SP2). The outside pieces >>>>> are disconected from the inside pieces, like this: >>>>> >>>>> [image: Imagem inline 1] >>>>> >>>>> I'm pretty sure it's me doing something wrong in houdini... My setup >>>>> is really simple: Import alembic mesh > vdb from polys > scatter > voronoi >>>>> with those points. Already tried to mess with all the voronoi parameters >>>>> and add a fuse node at the very end just before exporting. But I can't >>>>> find >>>>> a way to have the outside/inside faces merged for each piece. >>>>> >>>>> any hints? >>>>> >>>>> Thank you >>>>> >>>>> ------ >>>>> Softimage Mailing List. >>>>> To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com >>>>> with "unsubscribe" in the subject, and reply to confirm. >>>>> >>>> >>>> >>>> ------ >>>> Softimage Mailing List. >>>> To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com >>>> with "unsubscribe" in the subject, and reply to confirm. >>>> >>> >>> >> >> ------ >> Softimage Mailing List. >> To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com >> with "unsubscribe" in the subject, and reply to confirm. >> > > > > -- > Christopher Crouzet > *http://christophercrouzet.com* <http://christophercrouzet.com> > > > ------ > Softimage Mailing List. > To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com > with "unsubscribe" in the subject, and reply to confirm. >
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