deco.arrow: fix arrows at pos=0arrow-without-extrapolation
commitd8bf6a5d9a1d1a640083b665661e68317b70fb10
authorMichael J Gruber <michaeljgruber@users.sourceforge.net>
Tue, 29 May 2012 14:28:39 +0000 (29 16:28 +0200)
committerMichael J Gruber <michaeljgruber@users.sourceforge.net>
Tue, 29 May 2012 14:28:39 +0000 (29 16:28 +0200)
treec2c1230d363a46bd30b3cb63eaa9b06186b002f6
parent89daab80a240c7f7dedb758249d38f8489237e9d
deco.arrow: fix arrows at pos=0

The arrowhead needs a piece of size "size" of the path for its
construction. Therefore, only (arclen-size) of the path is available as
positions for a head without extending the path.

So, change pos=0 to mean a position at arclenpos=size, and introduce the
necessary additional path exclusions for begin/end arrows.
pyx/deco.py