Fix T57366: Mesh.from_pydata invalid loose-edge state

1 files changed, 12 insertions, 0 deletions

diff --git a/source/blender/blenkernel/intern/mesh_validate.c b/source/blender/blenkernel/intern/mesh_validate.c
index dd9d6fa448a..af4d1265cfd 100644
--- a/source/blender/blenkernel/intern/mesh_validate.c
+++ b/source/blender/blenkernel/intern/mesh_validate.c
@@ -1445,6 +1445,18 @@ void BKE_mesh_calc_edges(Mesh *mesh, bool update, const bool select)
 	BLI_edgehash_free(eh, NULL);
 }
 
+void BKE_mesh_calc_edges_loose(Mesh *mesh)
+{
+	MEdge *med = mesh->medge;
+	for (int i = 0; i < mesh->totedge; i++, med++) {
+		med->flag |= ME_LOOSEEDGE;
+	}
+	MLoop *ml = mesh->mloop;
+	for (int i = 0; i < mesh->totloop; i++, ml++) {
+		mesh->medge[ml->e].flag &= ~ME_LOOSEEDGE;
+	}
+}
+
 /**
  * Calculate/create edges from tessface data
  *