2010

Table Of Contents
A circle is a curve that loops back on itself. The CVs work the same way
as for any other curve. The more CVs you create for a curve or surface,
the more detail you can give its shape.
The drawback to using many CVs is that youll have a harder time making
smooth shape changes to broad regions. Also, more CVs means slower
processing time as you work with the curve. Its best to make curves with
as few CVs as necessary. With experience, youll learn how many CVs to
use in a situation.
3 Create another circle, this time with these options:
Radius: 2
Number of Sections: 24
This creates a smaller circle inside the first circle as shown below.
4 Change the scene view so you can see the circles from the top view.
5 Right-click the inner circle and select Control Vertex from the marking
menu. Repeat for the outer circle.
6 Turn on Snap to Points (below the menu bar).
7 As shown in the following figure, move CVs from the outer circle to the
corresponding inner circle positions. As you drag a CV near its destination,
the Snap to Points mode causes the CV to jump to the exact CV position.
Creating profile curves for a surface | 173