XNurbs uses one simple UI to solve all kinds of problems for NURBS creations – It virtually has an unlimited capacity for solving NURBS and generating high-quality surfaces based on energy-minimization method. Its energy-minimization algorithm produces high-quality surfaces that are analogous to a physical model: when a wooden batten bends, it always assumes a shape that minimizes its bending energy to form a smooth curve.

Sorgente: XNurbs | The most powerful and easiest-to-use NURBS software