Cusping & Smooth

        Cusp and smooth are the two types of relative positions between nodes and their controlling points.

Command:

        MenuNode > Smooth                                                 Node Editing Bar

To cusp a node

       Steps：

      1. Enter node editing mode

      2. Select the node.

      3. Click Menu【Node > Cusping】.

      4. Move the controlling points by dragging the mouse.

To smooth a node

       Steps：

      1. Enter node editing mode

      2. Select the node.

      3. ClickMenu【Node > Smooth】.

      4.Change the shape of the curve by changing the position of the controlling points.

Note: Smooth function should only be applied to acute nodes, and Cusping operation is only valid to smooth nodes.