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Table Of Contents
538 | Chapter 19 Creating and Editing Surfaces
Creating Motion-Based Surfaces
Some surfaces are created by moving wires through space. These motion-
based surfaces are revolved, extruded, and swept.
Revolved Surfaces
A revolved surface uses two wires: one establishes the constant shape of the
surface, and the other is the axis about which to spin the shape. The revolved
surface is created by the motion of a wire shape through space.
To revolve a surface
1 Use
AMREVOLVESF to revolve a spline curve about an axis, responding to the
prompts.
Desktop Menu Surface Create Surface Revolve
Select path curves to revolve: Select spline (1)
Select path curves to revolve: Press
ENTER
Specify axis start point or [Wire]: Enter w
Select wire to define axis: Select line (2)
Enter start angle <0>: Press
ENTER
Enter included angle (+=ccw, -=cw) <Full circle>: Press ENTER
The curve revolves about the vertical line.
2 Use the Zoom Extents option of
ZOOM to redisplay all the wireframes and
select the object for the next exercise.
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