From ee82e56a4fff52a9bc2e01f5a961be5eb34cf891 Mon Sep 17 00:00:00 2001 From: Alessandro Ranellucci <aar@cpan.org> Date: Mon, 10 Feb 2014 16:02:47 +0100 Subject: [PATCH] Bugfix: crashing when concentric infill produced very narrow loops. #1740 --- lib/Slic3r/Fill/Concentric.pm | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/lib/Slic3r/Fill/Concentric.pm b/lib/Slic3r/Fill/Concentric.pm index 75dce8d23..10cc7aeb6 100644 --- a/lib/Slic3r/Fill/Concentric.pm +++ b/lib/Slic3r/Fill/Concentric.pm @@ -47,9 +47,10 @@ sub fill_surface { $last_pos = $paths[-1]->last_point; } - # clip the paths to avoid the extruder to get exactly on the first point of the loop + # clip the paths to prevent the extruder from getting exactly on the first point of the loop my $clip_length = scale $flow_spacing * &Slic3r::LOOP_CLIPPING_LENGTH_OVER_SPACING; $_->clip_end($clip_length) for @paths; + @paths = grep $_->is_valid, @paths; # remove empty paths (too short, thus eaten by clipping) # TODO: return ExtrusionLoop objects to get better chained paths return { flow_spacing => $flow_spacing, no_sort => 1 }, @paths;