Bugfix of bottom bridges. If close regions shall be closed by bridges,

these regions are grown to anchor the bridge lines to the bottom surface.
The grown regions may overlap. In that case the regions are now merged
before the bridging direction is calculated for the merged region.

1 files changed, 17 insertions, 0 deletions

diff --git a/xs/src/libslic3r/Polyline.cpp b/xs/src/libslic3r/Polyline.cpp
index baa2bbf5d..08717b57c 100644
--- a/xs/src/libslic3r/Polyline.cpp
+++ b/xs/src/libslic3r/Polyline.cpp
@@ -1,3 +1,4 @@
+#include "BoundingBox.hpp"
 #include "Polyline.hpp"
 #include "ExPolygon.hpp"
 #include "ExPolygonCollection.hpp"
@@ -220,6 +221,22 @@ Polyline::wkt() const
     return wkt.str();
 }
 
+BoundingBox get_extents(const Polyline &polyline)
+{
+    return polyline.bounding_box();
+}
+
+BoundingBox get_extents(const Polylines &polylines)
+{
+    BoundingBox bb;
+    if (! polylines.empty()) {
+        bb = polylines.front().bounding_box();
+        for (size_t i = 1; i < polylines.size(); ++ i)
+            bb.merge(polylines[i]);
+    }
+    return bb;
+}
+
 ThickLines
 ThickPolyline::thicklines() const
 {