show() regression: Picture cropped too much

[haaninjo]

In sage 4.1.2 and later, the show() function shows graphs so cropped that their vertices are partially missing.

This is a regression in 4.1.2 and later, Sage 4.1.1 is fine.

Attaching the figures from

G=graphs.CycleGraph(3);G.show()

to show the issue.

CC: @rlmill @rbeezer

Component: graphics

Author: Jason Grout

Reviewer: Robert Bradshaw

Merged: sage-4.3.2.alpha0

Issue created by migration from https://trac.sagemath.org/ticket/7299

[haaninjo]

Attachment: Triangle-sage_4.1.1.png

Triangle graph in 4.1.1

[haaninjo]

Attachment: Triangle-Sage_4.1.2.png

Triangle graph in 4.1.2

[jasongrout]

comment:1

Attachment: trac-7299-graph-pad.patch.gz

[jasongrout]

Author: Jason Grout

[jasongrout]

comment:3

The attached patch is a one-line fix that makes graph vertices not be cut off now.

[robertwb]

comment:4

LGTM. Such a small change for a big impact.

[sagetrac-mvngu]

Reviewer: Robert Bradshaw