I spent numerous hours working out how to efficiently clip strands/polylines in VEX for a project with dense strand meshes. I thought I'd been really clever implementing the Liang-Barsky algorithm on the NDC cube and then I stumbled into the problem of how to interpolate all existing attributes at the intersection points. Asking for help on various forums - Matt Estela pointed out that the same effect could be achieved with four Clip SOPs in NDC space with the additional bonus of 'free' attribute interpolation. I can't bear the thought of all that time going to waste so here is a vex implementation of Liang-Barsky - maybe someone can find some kind of use for it!
File is here.
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