subject: The Three Methods of Modeling [print this page] There are six basic operations formed in polygonal modeling. Creations refer to a new geometrical shape being formed from another mathematical object. Lofting refers to the action of generating a mesh by continuing a shape over a pattern. Extruding also copies a shape, but over the period of a line rather than a space. Revolving refers to using a shape to rotating and copying the shape around a specific point and lastly, marching cubes which can create shapes using specific algorithms.