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## Torus Parameter Editing

Figure (ped-tor): Torus Parameter Editing Menu

The TOR general class of solids contains only one type of torus, one with circular cross-sections. The defining parameters of the TOR are two radii (r1 and r2), a normal vector (N), and the vertex (V). The scalar r1 is the distance from the vertex to the midpoint of the circular cross section. The scalar r2 is the radius of the circular cross-section. The vector N is used to orient the torus. During solid editing, none of these parameters are labeled on the screen. Figure (ped-tor) depicts a typical torus during parameter editing.

The parameter editing of the TOR consists of scaling the radii, hence the menu contains only two members.