NURBS, Non-Uniform Rational B-Splines, are mathematical representations of 3‑D geometry that can accurately describe any shape from a simple 2‑D line, circle, arc, or curve to the most complex 3‑D organic free-form surface or solid. Because of their flexibility and accuracy, NURBS models can be used in any process from illustration and animation to manufacturing.
Polygon modelling
Polygon modelling
In 3D computer graphics , polygonal modelling is an approach for modelling objects by representing or approximating their surfaces using polygons. Polygonal modelling is well suited to scan line rendering and is therefore the method of choice for real time computer graphics. Alternate methods of representing 3D objects include NURBS surfaces, subdivision surfaces, and equation-based representations used in ray tracers. See polygon mesh for a description of how polygonal models are represented and stored.
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