Import PrusaSlicer G2/G3 arc discretization code

src/libslic3r/Geometry/ArcWelder.cpp

@@ -0,0 +1,32 @@
+// The following code for merging circles into arches originates from https://github.com/FormerLurker/ArcWelderLib
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// Arc Welder: Anti-Stutter Library
+//
+// Compresses many G0/G1 commands into G2/G3(arc) commands where possible, ensuring the tool paths stay within the specified resolution.
+// This reduces file size and the number of gcodes per second.
+//
+// Uses the 'Gcode Processor Library' for gcode parsing, position processing, logging, and other various functionality.
+//
+// Copyright(C) 2021 - Brad Hochgesang
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// This program is free software : you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published
+// by the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
+// GNU Affero General Public License for more details.
+//
+//
+// You can contact the author at the following email address: 
+// FormerLurker@pm.me
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+#include "ArcWelder.hpp"
+
+namespace Slic3r { namespace Geometry { namespace ArcWelder {
+
+} } } // namespace Slic3r::Geometry::ArcWelder