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Go to Draw > Wire Grid > Paraboloid in the main menu to display the Draw dialog box for the Paraboloid. There are three pages: Paraboloid, Attributes and Materials.

The Paraboloid page

In the Paraboloid page the geometrical parameters for the Paraboloid can be set, Fig. 1. There is a combo-box with two options: Curved segments and Straight segments. Choose Curved segments for an exact representation of the paraboloid curvature. The Straight segments option is an approximation using linear wires.

The Paraboloid is defined by giving the Vertex coordinates, Focal Distance, Aperture Radius and orientation angles, Theta and Phi. A paraboloid is a curved surface which is defined uniquely by these parameters, as shown in Fig. 2.

Once the geometrical parameters in the Paraboloid page have been set, the Attributes page can be chosen, where the number of facets of the Paraboloid can be entered. Refer to Wire Grid Attributes > to see other parameters that can be set in the Attributes page. Refer to Wire Materials > to see the parameters that can be set in the Materials page.

Fig. 1: Paraboloid page of the Draw dialog box.
Fig. 2: A Paraboloid drawn using the input data of Fig. 1.
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