1 .. _add_node_on_face_page:
3 *****************************
4 Cutting a face into triangles
5 *****************************
7 This operation cuts a face into triangles by adding a node on the face and connecting the new node with face nodes.
9 .. image:: ../images/add_node_on_face.png
14 .. |img| image:: ../images/mesh_split_face_interactive.png
16 #. Select a mesh and display it in the 3D Viewer.
17 #. In the **Modification** menu select the **Add node to triangle** item or click *"Add node to triangle"* button |img| in the toolbar.
19 The following dialog box will appear:
21 .. image:: ../images/add_node_on_face-dlg.png
25 #. Enter an **ID** of the face to split either by picking it in the 3D viewer or by typing its ID.
27 #. Press *Selection* button in **Node location by mouse click** group to activate specifying location of a new node. You can specify it
29 * by clicking with your mouse on the face in the Viewer,
30 * by typing coordinates in **X, Y, Z** fields,
31 * by setting coordinates using arrows of spin boxes.
33 #. Activate **Preview** to see a result of the operation.
35 #. Click the **Apply** or **Apply and Close** button to confirm the operation.
37 **See Also** a sample TUI Script of a :ref:`tui_cutting_triangles` operation.