Curve By Plane

This type of curve is the result of an intersection between a surface and a plane. The plane can be any of the four plane types described in The Plane Function.

When modifying an existing curve of this type, the following form is used

Figure 2:40. Pop-up menu for modification of plane curve.

By Select Surface you can change the surface the curve is based upon. The button Modify Plane equivalently lets you modify the plane used to create the curve. The Select Type button is used to change the type of the curve to any of the curve types described in this section. By use of the button Modify Box, the extension of the curve may be changed. Finally, Ok quits the Modify function and recreates the curve.