trac #34306: small improvements in src/sage/geometry/polyhedron/

sagemath · Aug 8, 2022 · b19f265 · b19f265
1 parent e351e42
commit b19f265
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Showing 2 changed files with 4 additions and 2 deletions.
diff --git a/src/sage/geometry/polyhedron/plot.py b/src/sage/geometry/polyhedron/plot.py
@@ -1816,9 +1816,10 @@ def _tikz_3d_in_3d(self, view, angle, scale, edge_color,
 
         # Draw the facets in the front by going in cycles for every facet.
         tikz_pic += '%%\n%%\n%% Drawing the facets\n%%\n'
+        vertex_to_index = {v: i for i, v in enumerate(vertices)}
         for index_facet in front_facets:
             cyclic_vert = cyclic_sort_vertices_2d(list(facets[index_facet].incident()))
-            cyclic_indices = [vertices.index(v) for v in cyclic_vert]
+            cyclic_indices = [vertex_to_index[v] for v in cyclic_vert]
             tikz_pic += '\\fill[facet] '
             for v in cyclic_indices:
                 if v in dict_drawing:

diff --git a/src/sage/geometry/polyhedron/ppl_lattice_polytope.py b/src/sage/geometry/polyhedron/ppl_lattice_polytope.py
@@ -671,7 +671,8 @@ def pointsets_mod_automorphism(self, pointsets):
         points = tuple(sorted(points))
         Aut = self.lattice_automorphism_group(points,
                                               point_labels=tuple(range(len(points))))
-        indexsets = set(frozenset(points.index(p) for p in ps)
+        point_to_index = {p: i for i, p in enumerate(points)}
+        indexsets = set(frozenset(point_to_index[p] for p in ps)
                         for ps in pointsets)
         orbits = []
         while indexsets: