From 2e6d34aa5ab92f9ef16c1a872ab24e8b615a728f Mon Sep 17 00:00:00 2001
From: Eduard Braun <Eduard.Braun2@gmx.de>
Date: Tue, 6 Sep 2016 01:39:30 +0200
Subject: [PATCH] =?UTF-8?q?Fix=20conversion=20of=20cubic=20B=C3=A9zier=20"?=
 =?UTF-8?q?curveto"=20commands=20into=20"shorthand/smooth=20curveto"=20com?=
 =?UTF-8?q?mands.=20When=20the=20preceeding=20path=20segment=20is=20a=20B?=
 =?UTF-8?q?=C3=A9zier=20curve,=20too,=20the=20first=20control=20point=20of?=
 =?UTF-8?q?=20the=20shorthand=20defaults=20to=20the=20mirrored=20version?=
 =?UTF-8?q?=20of=20the=20second=20control=20point=20of=20this=20preceeding?=
 =?UTF-8?q?=20path=20segment.=20Scour=20always=20assumed=20(0,0)=20as=20th?=
 =?UTF-8?q?e=20control=20point=20in=20this=20case=20which=20could=20result?=
 =?UTF-8?q?=20in=20modified=20path=20data=20(e.g.=20#91).?=
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Content-Type: text/plain; charset=UTF-8
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---
 scour/scour.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/scour/scour.py b/scour/scour.py
index 754e5dd..fdae854 100644
--- a/scour/scour.py
+++ b/scour/scour.py
@@ -2193,7 +2193,13 @@ def cleanPath(element, options) :
             newPath.append( (cmd, lineTuples) )
       # convert Bézier curve segments into s where possible
       elif cmd == 'c':
-         bez_ctl_pt = (0,0)
+         # set up the assumed bezier control point as the current point, i.e. (0,0) since we're using relative coords
+         bez_ctl_pt = (0, 0)
+         # however if the previous command was 's' the assumed control point is a reflection of the previous control point at the current point
+         if len(newPath):
+            (prevCmd, prevData) = newPath[-1]
+            if prevCmd == 's':
+               bez_ctl_pt = (prevData[-2]-prevData[-4], prevData[-1]-prevData[-3])
          i = 0
          curveTuples = []
          while i < len(data):