.

extensions/fablabchemnitz/convert_to_polylines/convert_to_polylines.inx

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<inkscape-extension xmlns="http://www.inkscape.org/namespace/inkscape/extension">
+    <name>Convert To Polylines</name>
+    <id>fablabchemnitz.de.convert_to_polylines</id>
+    <effect>
+      <object-type>path</object-type>
+      <effects-menu>
+        <submenu name="FabLab Chemnitz">
+            <submenu name="Modify existing Path(s)"/>
+        </submenu>
+      </effects-menu>
+    </effect>
+    <script>
+       <command location="inx" interpreter="python">convert_to_polylines.py</command>
+    </script>
+</inkscape-extension>

extensions/fablabchemnitz/convert_to_polylines/convert_to_polylines.py

@@ -0,0 +1,49 @@
+#!/usr/bin/env python3
+
+"""
+Extension for InkScape 1.0
+
+Converts curves to polylines - a quick and dirty helper for a lot of elements. Basically the same functionality can be done with default UI featureset but with a lot more mouse clicks
+
+Author: Mario Voigt / FabLab Chemnitz
+Mail: mario.voigt@stadtfabrikanten.org
+Date: 05.09.2020
+Last patch: 05.09.2020
+License: GNU GPL v3
+"""
+
+import inkex
+from inkex.paths import Path
+
+class ConvertToPolylines(inkex.EffectExtension):
+
+    #convert a path (curve) to a polyline and remove dangling/duplicate/useless overlapping handles (points)
+    def convertPath(self, node):
+        if node.tag == inkex.addNS('path','svg'):
+            polypath = []
+            i = 0
+            for x, y in node.path.end_points:
+                if i == 0:
+                    polypath.append(['M', [x,y]])
+                else:
+                    polypath.append(['L', [x,y]])
+                    if i == 1 and polypath[len(polypath)-2][1] == polypath[len(polypath)-1][1]:
+                        polypath.pop(len(polypath)-1) #special handling for the seconds point after M command
+                    elif polypath[len(polypath)-2] == polypath[len(polypath)-1]: #get the previous point
+                        polypath.pop(len(polypath)-1)
+                i += 1
+                node.set('d', str(Path(polypath)))
+        children = node.getchildren()
+        if children is not None: 
+            for child in children:
+                self.convertPath(child) 
+ 
+    def effect(self):
+        if len(self.svg.selected) == 0:
+             self.convertPath(self.document.getroot())
+        else:
+            for id, item in self.svg.selected.items():
+                self.convertPath(item)
+      
+if __name__ == '__main__':
+    ConvertToPolylines().run()