On 01/14/2017 05:18 PM, John Perry wrote:
I'd like to extract the rays of a polyhedron. As far as I can tell from the documentation, the only way to do this is to extract the generators, then loop over them, testing which is a ray:
Generator_System G = P.generators(); for (Generator g : G) if (g.is_ray()) { /* party time */ }
Is there a more direct way to do this, something like G.rays() or even P.rays()?
Hello John, the snippet above makes lots of unnecessary copies. I would do something like const Generator_System& G = P.generators(); for (const Generator& g : G) if (g.is_ray()) { /* party time */ } At party time you can copy `g' if you need to modify the selected ray. Apart from this, no, there is no more direct way: if it were, it would be implemented along those lines. Kind regards, Roberto -- Prof. Roberto Bagnara Applied Formal Methods Laboratory - University of Parma, Italy mailto:bagnara@cs.unipr.it BUGSENG srl - http://bugseng.com mailto:roberto.bagnara@bugseng.com