Hi All. Here is a final crack at posing my question -- this is as whittled as I can whittle:
Given a 3-D vertex of 3 faces with all edge-to-edge angles known, how does one calculate its face-to-face angles (all, one per edge)? If there come to mind other sites especially interested in this sort of query, I'd appreciate hearing. Thanks for your consideration. P.A. ------------------------------------------------------------------------------------------------ Dear J Folks, From this shape's coordinates as given in Stewart's _Adventures Among The Toroids_, I've calculated planar angles (internal angles successively around the perimeter of each face) and wish now to compute the (12 unique of 21) interfacial angles as well. There are 14 vertices, each the meeting of 3 edges. Am I correct, that at any vertex an appropriate function should be able to calculate the I-F angles, given just the planar angles among the edge pairs? If so, what would be a workable J version? If not, what am I not seeing? Would appreciate any comment. Thanks in advance! P.A. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
