 Free-form deformation

Free-form deformation (FFD) is a powerful technique in computer graphics and geometric modeling used to manipulate the shape of objects in a flexible and intuitive way. It allows users to deform 3D shapes by controlling a lattice or grid that surrounds or encloses the object. Here are some key aspects of free-form deformation: 1. **Lattice Structure**: FFD begins with a control lattice, which is often a simple grid or mesh of control points (vertices).