Support >180 deg arcs in schematic.

common/plotters/PS_plotter.cpp

@@ -2,7 +2,7 @@
  * This program source code file is part of KiCad, a free EDA CAD application.
  *
  * Copyright (C) 2017 Jean-Pierre Charras, jp.charras at wanadoo.fr
- * Copyright (C) 2020-2022 KiCad Developers, see AUTHORS.txt for contributors.
+ * Copyright (C) 2020-2023 KiCad Developers, see AUTHORS.txt for contributors.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -548,7 +548,8 @@ void PS_PLOTTER::Arc( const VECTOR2I& aCenter, const VECTOR2I& aStart, const VEC
     EDA_ANGLE endAngle( mapCoords( end_device - center_device ) );
 
     // userToDeviceCoordinates gets our start/ends out of order
-    std::swap( startAngle, endAngle );
+    if( !m_plotMirror )
+        std::swap( startAngle, endAngle );
 
     SetCurrentLineWidth( aWidth );