Hermann Stamm-Wilbrandt

Wait, ```[10, 112, -5]``` and ```[-10, -112, 5]``` are "the same", only opposite. Wrt the two parallel width planes both are "the same". If that is true, ```CGAL_get_number_of_optimal_solutions()``` should return...

The PARI/GP way to identify unique vectors: ``` ? dir=[[81920, 917504, -40960], [204800, 2293760, -102400], [122880, 1376256, -61440], [81920, 917504, -40960], [-122880, -1376256, 61440], [-40960, -458752, 20480], [-163840, -1835008, 81920],...

Here is a much simpler example where "CGAL_get_number_of_optimal_solutions()" returns twice (8) as many as correct (4):  ``` pi@raspberrypi5:~/cgal4gp $ gp -q cgal4gp.gp ? CGAL_Width([[1, 0, 0], [2, -1, 0],...

@afabri Sure, with demo execution in comment, matching to discussion of two cases above in this issue: https://gist.github.com/Hermann-SW/3fbb577ab0ef2abb0e89fb06965c3256

Hello Andreas, thank you for "add a -DSIMPLIFY" (I am relatively new to CGAL). The results are better, but still wrong. While the 8 entries listed in first case are...

With latest revision of the gist https://gist.github.com/Hermann-SW/3fbb577ab0ef2abb0e89fb06965c3256 the workaround you described is implemented: - compile with -DSIMPLIFY - "normalize" away the direction - std::sort() - std::unique() ``` hermann@7950x:~$ g++ -DSIMPLIFY...

I moved PARI/GP workaround to C++, and that can be removed when this issue will be fixed: https://github.com/Hermann-SW/cgal4gp/commit/aa4083605426af308cd25b79168b97a3a55f3bf4 ``` pi@raspberrypi5:~/cgal4gp $ gp -q < simple.gp - Width([[1, 0, 0], [2,...

> ... If we wanted to get rid of such multiples, we would have to do the simplification of numbers all the time. As it is documented that the number...

I need help. I tried to fix the issues in new code for the PR. Still CI is failing, but for code outside of my changes. With 1.86 Graph requires...

Sorry that I did not mention the literature, it is: Marek Chrobak, David Eppstein "Planar orientations with low out-degree and compaction of adjacency matrices" Theoretical Computer Science 1991 https://dl.acm.org/doi/10.1016/0304-3975%2891%2990020-3 Without...