Use Douglas-Peucker simplification always and remove the inefficient parallel lines merging algorithm. #277

lib/Slic3r/Layer.pm

@@ -112,7 +112,8 @@ sub make_surfaces {
     {
         # merge everything
         my $expolygons = union_ex($loops);
-
+        $_->simplify(scale $Slic3r::resolution) for @$expolygons;
+        
         Slic3r::debugf "  %d surface(s) having %d holes detected from %d polylines\n",
             scalar(@$expolygons), scalar(map $_->holes, @$expolygons), scalar(@$loops);
         

lib/Slic3r/TriangleMesh.pm

@@ -267,7 +267,6 @@ sub make_loops {
         Slic3r::debugf "  Discovered %s polygon of %d points\n",
             ($polygons[-1]->is_counter_clockwise ? 'ccw' : 'cw'), scalar(@points)
             if $Slic3r::debug;
-        pop @polygons if !$polygons[-1]->cleanup;
     }
     
     return [@polygons];