Revolved objects
Open or closed profile shapes can be revolved about an axis to derive a
vast variety of lathed objects, which can be revolved about a complete circle
or a partial arc. The revolve operation is executed with just two clicks
of the mouse. The axis of revolution can be any of the orthogonal (Cartesian)
axes, or any line drawn anywhere, or a segment from a previously created
object. The source profile can be a shape drawn specifically for the revolve
operation, or any face of a previously created object. These unique variations
of the revolve operation found in form·Z offer tremendous flexibility,
especially when lathed objects need to be created in positions relative
to other objects.
Above left: the same profile is revolved about two different axes producing
two distinctly different objects. Right: two profiles are revolved about
the same axis producing a bottle and its cork. The examples are shown in
wireframe, hidden line, and shaded images.
A circle and arc are revolved about the same axis to first produce a complete
torus (donut) and sphere, and then a partial torus and sphere.
Above left: two faces of a cube are revolved about two of its edges. Right:
a shape drawn on the top surface of a cube is revolved about the top four
edges of the cube.
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