9

276 Chapter 5: Creating Geometry
Closed pie slice arcs
Reverse—When on, t he direction of the arc spl ine
is reversed , and the first vertex is placed at the
opposite end of an open arc. As long as the shape
remains an original shape (and not an editable
spline), you can switch its direct ion by toggling
Reverse. Once the arc is converted to an editable
spline, you can use Reverse at the Spline sub-object
level to reverse direction.
Donut S pline
Create panel > Shapes > Splines > Object Type rollout
>Donut
Create menu > Shapes > Donut
Use D onut to create closed shapes from two
concentric circles. Each circle is made of four
vertices.
Example of donut
Procedure
To create a donut:
1.
GototheCreatepanelandchoose
Shapes.
2. Click D onut.
3. Chooseacreationmethod.
4. Drag and release the mouse button to define
the first donut circle.
5. Move the mouse and then click to define the
radius of the second concentric donut circle.
Thesecondcirclecanbelargerorsmallerthan
the first.
Interfa ce
Rendering and Interpolation rollouts
All spline-based shapes share these parameters.
See Splines (page 1–266) for explanations of these
parameters.
Creation Method rollout
The Donut shape uses the standard creation
methodsofCenterorEdge. Mostspline-based
shapes share the same Creation Method
parameters. See Splines (page 1–266) for an
explanation of these parameters.
Parameters rollout
Once you have created a donut, you can make
changes using the following parameters:
Radius 1—Sets the radius of the first circle.
Radius 2—Sets the r adius of the second circle.