From e9eb8ad684ad6d61cc167bf30d235b202d41947e Mon Sep 17 00:00:00 2001
From: Alvin Penner <penner@vaxxine.com>
Date: Mon, 1 Feb 2010 18:35:34 -0500
Subject: [PATCH] allow switch between LINE and LWPOLYLINE

---
 share/extensions/dxf_outlines.inx |  8 +++++---
 share/extensions/dxf_outlines.py  | 14 ++++++++++++--
 2 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/share/extensions/dxf_outlines.inx b/share/extensions/dxf_outlines.inx
index 169385001..fe8048a8e 100644
--- a/share/extensions/dxf_outlines.inx
+++ b/share/extensions/dxf_outlines.inx
@@ -7,14 +7,16 @@
 	<dependency type="executable" location="extensions">inkex.py</dependency>
 	<param name="tab" type="notebook">
 		<page name="options" _gui-text="Options">
-			<param name="ROBO" type="boolean" _gui-text="enable ROBO-Master output">false</param>
+			<param name="ROBO" type="boolean" _gui-text="use ROBO-Master type of spline output">false</param>
+			<param name="POLY" type="boolean" _gui-text="use LWPOLYLINE type of line output">true</param>
 		</page>
 		<page name="help" _gui-text="Help">
 			<_param name="inputhelp" type="description" xml:space="preserve">- AutoCAD Release 13 format.
 - assume svg drawing is in pixels, at 90 dpi.
 - assume dxf drawing is in mm.
-- only LWPOLYLINE and SPLINE elements are supported.
-- ROBO-Master option is a specialized spline readable only by ROBO-Master and AutoDesk viewers, not Inkscape.</_param>
+- only line and spline elements are supported.
+- ROBO-Master spline output is a specialized spline readable only by ROBO-Master and AutoDesk viewers, not Inkscape.
+- LWPOLYLINE output is a multiply-connected polyline, disable it to use a legacy version of the LINE output.</_param>
 		</page>
 	</param>
 	<output>
diff --git a/share/extensions/dxf_outlines.py b/share/extensions/dxf_outlines.py
index ecdc6ce40..295fc7466 100755
--- a/share/extensions/dxf_outlines.py
+++ b/share/extensions/dxf_outlines.py
@@ -7,6 +7,7 @@ Copyright (C) 2008 Alvin Penner, penner@vaxxine.com
 - ROBO-Master output option added Aug 2008
 - ROBO-Master multispline output added Sept 2008
 - LWPOLYLINE output modification added Dec 2008
+- toggle between LINE/LWPOLYLINE added Jan 2010
 
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -53,6 +54,7 @@ class MyEffect(inkex.Effect):
     def __init__(self):
         inkex.Effect.__init__(self)
         self.OptionParser.add_option("-R", "--ROBO", action="store", type="string", dest="ROBO")
+        self.OptionParser.add_option("-P", "--POLY", action="store", type="string", dest="POLY")
         self.OptionParser.add_option("--tab", action="store", type="string", dest="tab")
         self.OptionParser.add_option("--inputhelp", action="store", type="string", dest="inputhelp")
         self.dxf = []
@@ -65,6 +67,10 @@ class MyEffect(inkex.Effect):
     def dxf_add(self, str):
         self.dxf.append(str)
     def dxf_line(self,csp):
+        self.handle += 1
+        self.dxf_add("  0\nLINE\n  5\n%x\n100\nAcDbEntity\n  8\n0\n 62\n%d\n100\nAcDbLine\n" % (self.handle, self.color))
+        self.dxf_add(" 10\n%f\n 20\n%f\n 30\n0.0\n 11\n%f\n 21\n%f\n 31\n0.0\n" % (csp[0][0],csp[0][1],csp[1][0],csp[1][1]))
+    def LWPOLY_line(self,csp):
         if (abs(csp[0][0] - self.poly[-1][0]) > .0001
             or abs(csp[0][1] - self.poly[-1][1]) > .0001):
             self.LWPOLY_output()                            # terminate current polyline
@@ -174,14 +180,18 @@ class MyEffect(inkex.Effect):
                         s = sub[i]
                         e = sub[i+1]
                         if s[1] == s[2] and e[0] == e[1]:
-                            self.dxf_line([s[1],e[1]])
+                            if (self.options.POLY == 'true'):
+                                self.LWPOLY_line([s[1],e[1]])
+                            else:
+                                self.dxf_line([s[1],e[1]])
                         elif (self.options.ROBO == 'true'):
                             self.ROBO_spline([s[1],s[2],e[0],e[1]])
                         else:
                             self.dxf_spline([s[1],s[2],e[0],e[1]])
         if self.options.ROBO == 'true':
             self.ROBO_output()
-        self.LWPOLY_output()
+        if self.options.POLY == 'true':
+            self.LWPOLY_output()
         self.dxf_add(dxf_templates.r14_footer)
 
 if __name__ == '__main__':
-- 
2.30.2