Merge branch 'master' into grow-narrow

Build.PL

@@ -26,6 +26,7 @@ my $build = Module::Build->new(
         'IO::Scalar' => '0.10',
     },
     recommends     => {
+        'Class::XSAccessor' => '0',
         'Growl::GNTP' => '0.15',
         'Net::DBus'   => '0',
         'XML::SAX::ExpatXS' => '0',

lib/Slic3r/Config.pm

@@ -991,7 +991,11 @@ END
 };
 
 # generate accessors
-{
+if (eval "use Class::XSAccessor; 1") {
+    Class::XSAccessor->import(
+        getters => { map { $_ => $_ } keys %$Options },
+    );
+} else {
     no strict 'refs';
     for my $opt_key (keys %$Options) {
         *{$opt_key} = sub { $_[0]{$opt_key} };

lib/Slic3r/Geometry.pm

@@ -229,15 +229,7 @@ sub point_is_on_left_of_segment {
 
 sub polyline_lines {
     my ($polygon) = @_;
-    
+    return map Slic3r::Line->new($polygon->[$_], $polygon->[$_+1]), 0 .. $#$polygon-1;
-    my @lines = ();
-    my $last_point;
-    foreach my $point (@$polygon) {
-        push @lines, Slic3r::Line->new($last_point, $point) if $last_point;
-        $last_point = $point;
-    }
-    
-    return @lines;
 }
 
 sub polygon_lines {

lib/Slic3r/Surface.pm

@@ -39,6 +39,21 @@ sub depth_layers    { $_[0][S_DEPTH_LAYERS] } # this integer represents the thic
 sub bridge_angle    { $_[0][S_BRIDGE_ANGLE] = $_[1] if defined $_[1]; $_[0][S_BRIDGE_ANGLE] }
 sub extra_perimeters { $_[0][S_EXTRA_PERIMETERS] = $_[1] if defined $_[1]; $_[0][S_EXTRA_PERIMETERS] }
 
+if (eval "use Class::XSAccessor::Array; 1") {
+    Class::XSAccessor::Array->import(
+        getters => {
+            expolygon           => S_EXPOLYGON,
+        },
+        accessors => {
+            surface_type        => S_SURFACE_TYPE,
+            depth_layers        => S_DEPTH_LAYERS,
+            bridge_angle        => S_BRIDGE_ANGLE,
+            extra_perimeters    => S_EXTRA_PERIMETERS,
+        },
+        replace => 1,
+    );
+}
+
 # delegate handles
 sub encloses_point  { $_[0]->expolygon->encloses_point }
 sub lines           { $_[0]->expolygon->lines }

lib/Slic3r/TriangleMesh.pm

@@ -163,10 +163,10 @@ sub check_manifoldness {
 sub unpack_line {
     my ($packed) = @_;
     
-    my @data = unpack I_FMT, $packed;
+    my $data = [ unpack I_FMT, $packed ];
-    splice @data, 0, 2, [ @data[0,1] ];
+    splice @$data, 0, 2, [ @$data[0,1] ];
-    $data[$_] = undef for grep $data[$_] == -1, I_A_ID, I_B_ID, I_FACET_EDGE, I_PREV_FACET_INDEX, I_NEXT_FACET_INDEX;
+    $data->[$_] = undef for grep $data->[$_] == -1, I_A_ID, I_B_ID, I_FACET_EDGE, I_PREV_FACET_INDEX, I_NEXT_FACET_INDEX;
-    return [@data];
+    return $data;
 }
 
 sub make_loops {