SF.net SVN: matplotlib:[5787] branches/v0_91_maint/lib/matplotlib/patches. py

[<jd...@us...>]

Revision: 5787
          http://matplotlib.svn.sourceforge.net/matplotlib/?rev=5787&view=rev
Author:   jdh2358
Date:     2008-07-18 14:46:32 +0000 (Fri, 18 Jul 2008)

Log Message:
-----------
added Tuukka's YAArrow fix for horiz and vertical lines

Modified Paths:
--------------
    branches/v0_91_maint/lib/matplotlib/patches.py

Modified: branches/v0_91_maint/lib/matplotlib/patches.py
===================================================================
--- branches/v0_91_maint/lib/matplotlib/patches.py	2008-07-18 08:43:03 UTC (rev 5786)
+++ branches/v0_91_maint/lib/matplotlib/patches.py	2008-07-18 14:46:32 UTC (rev 5787)
@@ -712,6 +712,12 @@
         and the distance from x2,y2 ot the returned points is k
         """
         x1,y1,x2,y2,k = map(float, (x1,y1,x2,y2,k))
+
+        if y2-y1 == 0:
+            return x2, y2+k, x2, y2-k
+        elif x2-x1 == 0:
+            return x2+k, y2, x2-k, y2
+
         m = (y2-y1)/(x2-x1)
         pm = -1./m
         a = 1


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