Another long shot question, just in case someone has an answer…
I have a (manually created and positioned) point P that is next to some geometry GEO. I transfer the normals from GEO onto P, and then use a copy sop to stamp some INST geo on to P.
I want to have a manipulator handle on P that lets the user apply an additional tweak rotation to INST, after it has been stamped on P. That's all well and good, I've created a persistent xform handle and linked its (rx, ry, rz) to a transform node that rotates INST before it gets stamped.
My problem is I can't figure out how to set the xform handle's (rprex, rprey, rprez) so that the rotation handle is correctly lined up to where the user sees the geometry. Is there a nice ‘Houdini’ way to do this, or do I just need to keep bashing my head against writing some horrid attribute scripts to try and convert N into Euler angles the same way that the copy sop does, and feed them into the xform's (rprex, rprey, rprez)?
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For a visual example, say INST is a nail and it's being stamped several times (in a specific static way, not scattered) on GEO which is a tree. After being aligned to N during stamping, I want there to be rotation manipulators so the user can tweak the orientation of each nail.
