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| author | mdroe <mdroe@stsci.edu> | 2012-06-05 16:37:07 -0400 |
|---|---|---|
| committer | mdroe <mdroe@stsci.edu> | 2012-06-05 16:37:07 -0400 |
| commit | acc4e68a93b16832d397ff75bf5328a32094f525 (patch) | |
| tree | 8f350c5a0a550c53906783db655325eac3e41884 /lib/polygon.py | |
| parent | 67962ed392034cc221e928b9769e7bf98c9f6afd (diff) | |
| download | stsci.sphere-acc4e68a93b16832d397ff75bf5328a32094f525.tar.gz | |
Fix bug with serial intersection where the intersection is null.
git-svn-id: http://svn.stsci.edu/svn/ssb/stsci_python/stsci_python/branches/sphere@17203 fe389314-cf27-0410-b35b-8c050e845b92
Former-commit-id: 18f248eb618623cad24c535ad787f818f5c76a09
Diffstat (limited to 'lib/polygon.py')
| -rw-r--r-- | lib/polygon.py | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/polygon.py b/lib/polygon.py index 689e272..4270ce6 100644 --- a/lib/polygon.py +++ b/lib/polygon.py @@ -631,6 +631,10 @@ class SphericalPolygon(object): result = copy(polygons[0]) for polygon in polygons[1:]: result = result.intersection(polygon) + # If we have a null intersection already, we don't + # need to go any further. + if len(result._points) < 3: + return result return result else: raise ValueError("method must be 'parallel' or 'serial'") |