8

Ellipse Spline 269
Once you hav e created a circle, you can make
changes using the followi ng parameter:
Radius—Specifies the radius of the circle.
Ellipse Spline
Create panel > Shapes > Splines > Object Type rollout
> Ellipse
Create menu > Shapes > Ellipse
Use Ellipse to create elliptical and circular splines.
Examples of ellipses
Procedure
To create a n ellipse:
1.
GototheCreatepanelandchoose
Shapes.
2. Click Ellipse.
3. Chooseacreationmethod.
4. Drag in a viewport to draw the ellipse.
Optionally, press CTRL while dragging to
constrain the spline to a circle.
Inter face
Rendering and Interpolation rollouts
All spline-based shapes share these parameters.
See
Splines (page 1–261) for explanations of these
parameters.
Creation Meth od rollout
The Ellipse shape uses the standard creation
methodsofCenterorEdge. Mostspline-based
shapes share the same Creation Metho d
parameters. See
Splines (page 1–261) for an
explanation of these parameters.
Parameters rollout
Once you have created an Ellipse, you can make
changes using the following parameters:
Lengt h—Specifies the size of t he Ellipse along the
local Y axis.
Width—Specifies the size of the Ellipse local X axis.
Arc Spline
Create panel > Shapes > Splines > Object Type rollout
>Arc
Create menu > Shapes > Arc
Use Arc to create open and closed circular arcs
made of four vertices.
Procedures
To create an arc using the end-end-middle method:
1.
Go to the Create panel and choose
Shapes.
2. Click Arc.
3. ChoosetheEnd-End-Middlecreationmethod.
4. Drag in a viewport to set the two ends of the arc.
5. Releasethemousebutton,thenmovethe
mouse and click to specify a third point on an
arc between the two endpoints.