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This perl script will add a redundant bone to the end of each skeleton branch since the houdini conversion script mcbiovision drops the last bone in any branch. You get your fingers, toes and heads back!

$ bvhpad.pl orignal.bvh > padded.bvh

$ mcbiovision padded.bvh

My perl is so rusty the engine has fallen out, so caveat emptor. Most especially if your motion data lines have a leading space it screws up horribly. Someone fix that.. please?

These are the slides from a presentation on implementing subsurface scattering (SSS) using point clouds. They cover multiple scattering only, and don't include the "bounce attenuation" portion of it, but they may be useful in conjunction with the discussion in this thread:

http://odforce.net/forum/index.php?showtopic=2262&hl=

Oh; and the algorithm discussed in these slides (plus all the VEX code associated with it) can be found here at the exchange:

http://www.sidefx.com/exchange/info.php?fileid=144&versionid=144

Orient one model to another at sop level using prim normal and center. Like a align but not using uvs.

Completely rewritten - no longer uses dihedrals to calculate the orientation, this means it is stable when you animate the aligning poly meshes. Also fixed the bug that Jason mentioned.

Oops forgot to wire up the translate parameter. This has now been fixed.

This can be used in interior scenes as poster etc.

A blue screen matting VEX COP done in VOPs that implement some of the equations from Jim Blinn and Alvy Ray Smith's paper, "Blue Screen Matting" (ftp://ftp.alvyray.com/Acrobat/BluSig96.pdf)