Render 3-D Wireframe to Postscript?

W88 writes "I am very familiar with the 3-D rendering packages available including Blender and POVRay, but I am looking for something a little different. I am writing a paper that could benefit significantly from some three dimensional projected views of a fairly complex apparatus. I can easily model the apparatus, but do not want rendered bitmaps in the paper (I am using pdflatex). I would prefer edges with hidden lines removed rendered to a vector format like EPS or PDF (or even FIG). Has anyone seen anything like that? A web search turned up something called hlp that appears to be public domain from NASA but it is only available on a $300US CDROM from Public Domain Aeronautical Software." Note that any software created by the U.S. Government can be obtained with a Freedom of Information Act request, probably for less than the PDAS guys are charging.