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## Ellipsoid Parameter Editing

Figure (ped-ell): Ellipsoid Parameter Editing Menu

The ELLG general class represents all the ellipsoidal solids, including spheres and ellipsoids of revolution. The defining parameters of the ELLG are three mutually perpendicular vectors (A, B, and C) and the vertex (V). When an ELLG is being edited, only vectors A and B are labeled on the display. Figure (ped-ell) depicts a typical ELLG during parameter editing.

The parameter editing of the ELLG consists of scaling the lengths of the individual vectors A, B, C. One may also scale all theses vectors together of equal length.

The scaling of these vectors is done using the data tablet/mouse in exactly the same manner as in object scaling. The p keyboard command again can be used to produce a vector of desired length.