From 39b8ac80ee3402c8633ae86adf50d62e4bf0dc5f Mon Sep 17 00:00:00 2001
From: Alessandro Ranellucci <aar@cpan.org>
Date: Thu, 29 May 2014 14:54:47 +0200
Subject: [PATCH] Ignore holes in object footprint when generating raft

---
 lib/Slic3r/Print/SupportMaterial.pm | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/Slic3r/Print/SupportMaterial.pm b/lib/Slic3r/Print/SupportMaterial.pm
index 4db50c4a..fa941ad9 100644
--- a/lib/Slic3r/Print/SupportMaterial.pm
+++ b/lib/Slic3r/Print/SupportMaterial.pm
@@ -121,7 +121,8 @@ sub contact_area {
         if ($layer_id == 0) {
             # this is the first object layer, so we're here just to get the object
             # footprint for the raft
-            push @overhang, map $_->clone, map @$_, @{$layer->slices};
+            # we only consider contours and discard holes to get a more continuous raft
+            push @overhang, map $_->clone, map $_->contour, @{$layer->slices};
             push @contact, @{offset(\@overhang, scale +MARGIN)};
         } else {
             my $lower_layer = $object->layers->[$layer_id-1];