#17339: Polyhedron class mistreats empty inputs
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Reporter: darij | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.4
Component: geometry | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
public/polytopes/0 | f7642d6e2d2502e3df95c76ef2ffa7e9319a99aa
Dependencies: | Stopgaps:
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Comment (by vbraun):
The design choice is: nothing specified = empty polyhedron.
This is fine with your example, empty vertex list = empty polygon. Unless
you mean a non-compact 2-d polyhedron.
I agree that there is perhaps too much DWIM but its also very convenient
for interactive use. If you just specify a bunch of rays then in 99% of
the cases you want a cone, not some rule thumping about missing a vertex.
How about separate `Polyhedron.from_Vrep(vertices, rays, lines)` and
similarly `from_Hrep` with positional arguments and strict rules?
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Ticket URL: <http://trac.sagemath.org/ticket/17339#comment:5>
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