ExSan: sphere-sphere intersection is something that should commonly pop up in CAD applications, perhaps ask Cuch if he has some old code that generalizes to the sphere-object_built_from_intersected_spheres case?If you're just interested in the shape: "the intersection of the six spheres is the cube, but with curved faces which bulge out slightly because they are each part of a sphere."
http://mks.mff.cuni.cz/kalva/short/soln ... 02/MHasan/ // this might be of some use, see Section 5.1, Figure 2quartz:Interesting! I'm mostly interested in interactive graphics, so other than the above-mentioned libs I've been also looking at some gamedev libs that abstract over OpenGL (want cross-platform, so no DirectX in this case) (SFML looks promising). Perhaps I'll take a look at Gnuplot too, then!