Hollowing step in SLAPrint process, PrintConfig params added.

1 files changed, 5 insertions, 2 deletions

diff --git a/src/libslic3r/Model.cpp b/src/libslic3r/Model.cpp
index 061c5bd50..607f11bc6 100644
--- a/src/libslic3r/Model.cpp
+++ b/src/libslic3r/Model.cpp
@@ -1142,7 +1142,8 @@ ModelObjectPtrs ModelObject::cut(size_t instance, coordf_t z, bool keep_upper, b
             if (keep_upper) { upper->add_volume(*volume); }
             if (keep_lower) { lower->add_volume(*volume); }
         }
-        else {
+        else if (! volume->mesh().empty()) {
+            
             TriangleMesh upper_mesh, lower_mesh;
 
             // Transform the mesh by the combined transformation matrix.
@@ -1150,7 +1151,9 @@ ModelObjectPtrs ModelObject::cut(size_t instance, coordf_t z, bool keep_upper, b
 			TriangleMesh mesh(volume->mesh());
 			mesh.transform(instance_matrix * volume_matrix, true);
 			volume->reset_mesh();
-
+            
+            mesh.require_shared_vertices();
+            
             // Perform cut
             TriangleMeshSlicer tms(&mesh);
             tms.cut(float(z), &upper_mesh, &lower_mesh);