update

lib/Slic3r/Line.pm

@@ -0,0 +1,19 @@
+package Slic3r::Line;
+use strict;
+use warnings;
+
+# a line is a two-points line
+use parent 'Slic3r::Polyline';
+
+sub intersection {
+    my $self = shift;
+    my ($line, $require_crossing) = @_;
+    return Slic3r::Geometry::line_intersection($self, $line, $require_crossing);
+}
+
+sub grow {
+    my $self = shift;
+    return Slic3r::Polyline->new(@$self)->grow(@_);
+}
+
+1;