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diff --git a/src/3rdparty/2geom/src/toys/lpe-test.cpp b/src/3rdparty/2geom/src/toys/lpe-test.cpp
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+/**
+ * \file lpe-test.cpp
+ * \brief Example file showing how to write an Inkscape Live Path Effect toy.
+ */
+/*
+ * Copyright 2009  Johan Engelen <goejendaagh@zonnet.nl>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it either under the terms of the GNU Lesser General Public
+ * License version 2.1 as published by the Free Software Foundation
+ * (the "LGPL") or, at your option, under the terms of the Mozilla
+ * Public License Version 1.1 (the "MPL"). If you do not alter this
+ * notice, a recipient may use your version of this file under either
+ * the MPL or the LGPL.
+ *
+ * You should have received a copy of the LGPL along with this library
+ * in the file COPYING-LGPL-2.1; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * You should have received a copy of the MPL along with this library
+ * in the file COPYING-MPL-1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.1 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
+ * OF ANY KIND, either express or implied. See the LGPL or the MPL for
+ * the specific language governing rights and limitations.
+ *
+ */
+
+#include <toys/lpe-framework.h>
+
+// This is usually very bad practice: don't do it in your LPE
+using std::vector;
+using namespace Geom;
+using namespace std;
+
+class LPETest: public LPEToy {
+public:
+    LPETest() {
+        concatenate_before_pwd2 = false;
+    }
+
+    Geom::Piecewise<Geom::D2<Geom::SBasis> >
+    doEffect_pwd2 (Geom::Piecewise<Geom::D2<Geom::SBasis> > const & pwd2_in) override
+    {
+        using namespace Geom;
+
+        Piecewise<D2<SBasis> > pwd2_out = pwd2_in;
+
+        Point vector(50,100);
+        // generate extrusion bottom: (just a copy of original path, displaced a bit)
+        pwd2_out.concat( pwd2_in + vector );
+
+        // generate connecting lines (the 'sides' of the extrusion)
+        Path path(Point(0.,0.));
+        path.appendNew<Geom::LineSegment>( vector );
+        Piecewise<D2<SBasis> > connector = path.toPwSb();
+        // connecting lines should be put at cusps
+        Piecewise<D2<SBasis> > deriv = derivative(pwd2_in);
+        std::vector<double> cusps; // = roots(deriv);
+        for (double cusp : cusps) {
+            pwd2_out.concat( connector + pwd2_in.valueAt(cusp) );
+        }
+        // connecting lines should be put where the tangent of the path equals the extrude_vector in direction
+        std::vector<double> rts = roots(dot(deriv, rot90(vector)));
+        for (double rt : rts) {
+            pwd2_out.concat( connector + pwd2_in.valueAt(rt) );
+        }
+
+        return pwd2_out;
+    }
+};
+
+int main(int argc, char **argv) {
+    init(argc, argv, new LPETest);
+    return 0;
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+//vim:expandtab:shiftwidth = 4:tabstop = 8:softtabstop = 4:encoding = utf-8:textwidth = 99 :
+
+