Only apply arc compensation to circular holes. slic3r#418

jeffkyjin · Jun 14, 2012 · ca8a91b · ca8a91b
1 parent b00d960
commit ca8a91b
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/lib/Slic3r/Layer.pm b/lib/Slic3r/Layer.pm
@@ -225,6 +225,11 @@ sub make_perimeters {
         foreach my $hole ($last_offsets[0]->holes) {
             my $circumference = abs($hole->length);
             next unless $circumference <= $Slic3r::small_perimeter_length;
+            # this compensation only works for circular holes, while it would 
+            # overcompensate for hexagons and other shapes having straight edges.
+            # so we require a minimum number of vertices.
+            next unless $circumference / @$hole >= scale 3 * $Slic3r::flow->width;
+
             # revert the compensation done in make_surfaces() and get the actual radius
             # of the hole
             my $radius = ($circumference / PI / 2) - scale $self->perimeters_flow->spacing/2;