+/*
+ Rotate the mesh by 6d facedir value.
+ Method only for meshnodes, not suitable for entities.
+*/
+void rotateMeshBy6dFacedir(scene::IMesh *mesh, int facedir);
+
+/*
+ Rotate the mesh around the axis and given angle in degrees.
+*/
+void rotateMeshXYby (scene::IMesh *mesh, f64 degrees);
+void rotateMeshXZby (scene::IMesh *mesh, f64 degrees);
+void rotateMeshYZby (scene::IMesh *mesh, f64 degrees);
+
+/*
+ Clone the mesh.
+*/
+scene::IMesh* cloneMesh(scene::IMesh *src_mesh);
+
+/*
+ Convert nodebox drawtype node to mesh.
+*/
+scene::IMesh* convertNodeboxNodeToMesh(ContentFeatures *f);
+
+/*
+ Update bounding box for a mesh.
+*/
+void recalculateBoundingBox(scene::IMesh *src_mesh);