ParticleSkull Posted January 26, 2017 Share Posted January 26, 2017 Hi guys, I need to export some hair as alembic but it's not as easy as it looks like. I think it need to be converted to geometry first. Do you guys have any idea on how to proceed? Quote Link to comment Share on other sites More sharing options...
lukeiamyourfather Posted January 26, 2017 Share Posted January 26, 2017 If you're using the integrated hair and fur tools in Houdini it creates the geometry at render time in Mantra. Just about every hair and fur tool out there does the heavy lifting at render time so you'll likely just need the guides and other attributes rather than everything. 1 Quote Link to comment Share on other sites More sharing options...
ParticleSkull Posted January 26, 2017 Author Share Posted January 26, 2017 Hey Luke, Yes, I'm using the shelf tools. On a smooth shaded view I can see the hair with some kind of thickness. On a wireframe view I can see it's only a line/guide. It would be enough if I could give this line any kind of thickness to export it. It would be perfect if I could export a mesh just like the way I see it on the viewport, with thickness at the base and a point at the top Quote Link to comment Share on other sites More sharing options...
Atom Posted January 27, 2017 Share Posted January 27, 2017 (edited) That just looks like the @width parameter facing the camera, not really a mesh. Have you tried Polywire? You could try a Convert on the hair wires/curves without any Polywire. The help page says curves are stored in Alembic files as open polygon primitives. Edited January 27, 2017 by Atom 1 Quote Link to comment Share on other sites More sharing options...
Gavin Posted January 27, 2017 Share Posted January 27, 2017 You can always bypass the standard output and just grab the rendertime geo yourself (keeping in mind that this can get heavy). Dive inside the fur asset and you will fin another node called fur. Inside of that is the goemetry that is currently being displayed as well as the geometry that it will switch to at render time. Override this and you should get geo that can be put in an alembic. 2 Quote Link to comment Share on other sites More sharing options...
ParticleSkull Posted January 27, 2017 Author Share Posted January 27, 2017 Yeah Atom, polywire is exactly what I was looking for. For some reason I always forget it's name! Thx Gavin, I'm exporting from this fur node and it's working perfectly. I've just added a few nodes to control it's thickness properly. I'm attaching a working scene file in case someone else have this same doubt. Thx Here's what i've added to the fur node: Hair Export.rar Quote Link to comment Share on other sites More sharing options...
Shinjipierre Posted January 29, 2017 Share Posted January 29, 2017 This may suit your needs, use alembic instancing instead. Can't check it as I can't export the alembic at home. just be sure you have the "use alembic instancing when possible" parameter on (it's on by default) alembic_instancing.hipnc 1 Quote Link to comment Share on other sites More sharing options...
ParticleSkull Posted January 30, 2017 Author Share Posted January 30, 2017 Thx Remi! Quote Link to comment Share on other sites More sharing options...
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