ErinN

Hello,

We're having difficulty publishing model uv parameters on vertices, which Vray seems to need to render the groom curves from a USD file according to one of our td's. After USD publish it's attaching the UV's to points instead of vertices. Is it a correct assumption that Vray requires UV's on vertices to render from a USD publish? I understand that UV's on prims is more the standard for other render engines when rendering Houdini hair?

I didn't hear from anyone on this one but I figured out a simple solution that worked for me on this task. I didn't realize that adding multiple hair clump nodes would still select underlying clumps with 'Only Clump within existing Clumps' option enabled below clump size slider, and this allowed me to tighten up the clumps and the clump profile worked much better and noticeably in this case. So if in doubt, clump and clump again to obtain the desired results and clump tapering shape. I hope that this helps anyone with a similar issue while learning grooming in Houdini.

Thank you, Geoff!

I appreciate the tip. I was using guide advect at one point I was receiving an error which I will go back and find to paste here. It was breaking the groom but while I was using it to draw in guides, it did help to settle and adjust what was upstream with blend setting turned up.

One thing that has eluded me so far is how to shape clumps along their length similar to clumpy yak hair/fur. Image below to show what I mean. Does anyone have suggestions on how to influence clumping along its length to allow it to be thicker and caked together in the middle, then come to a fine sharp tip at the end? The clump profile doesn't seem to do enough, maybe the interpolation could help but the only one that seems to make a difference is Hermite.