Graph.show3D should have default aspect ratio of [1,1,1]

[jasongrout]

In the following:

sage: g=graphs.PetersenGraph()
sage: g.show3d()

the edges look messed up (some are darker and some are lighter and it changes as you rotate the graph). Putting aspect_ratio=[1,1,1] fixes the problem:

sage: g=graphs.PetersenGraph()
sage: g.show3d(aspect_ratio=[1,1,1])

Component: graph theory

Issue created by migration from https://trac.sagemath.org/ticket/2724

[sagetrac-mabshoff]

comment:1

Might this be a duplicate of #2477, i.e. show3d vs. plot3d? This also has some overlap with #2100.

Cheers,

Michael

[rlmill]

comment:2

This is an exact duplicate of #2477. Make sure to check before posting tickets!

[jasongrout]

comment:3

You're right, it's a dup of #2477. I tried searching for a ticket, but didn't find that one (I was looking for show3d).

I've posted a review for that patch.