Hello,

Does anyone know good Ruby 3D Math libraries? I found Math3D
(<http://raa.ruby-lang.org/project/math3d/>) but I can not get it working,
ruby extconf.rb fails:
$ ruby -r mkmf extconf.rb
checking for atan() in -lm... no
No atan() in -lm
*** extconf.rb failed ***

This is after I commented the following line, which made the configuration
fail too:
CFLAGS << " -Wall -Wno-comment"

The Alg3D library is not bad, but it does not contain everything from the 3D
Math library. E.g. rotation is missing, which is something I need.

Regards,
Bart