| Allegro CL version 8.1Object described on page has changed in 8.1. 8.0 version |

**Arguments: ***
stream center semi-major-axis
semi-minor-axis
semi-major-axis-angle start-angle
length-angle
*

Erases an ellipse arc from *stream*. The ellipse is
defined by the center (a position) and the two half-axes, lengths from
the center to the farthest point on the edge and to the nearest point
on the edge, called the semi-major-axis and the
semi-minor-axis. (Technically, the major axis should be longer than
the minor axis but the two arguments need not have that relationship.)
Because the Windows ellipse drawer can only draw ellipses that are
vertically or horizontally oriented, the
*semi-major-axis-angle* argument must be a multiple
of 90. Other values will signal an error. The argument specifies the
angle between the semi-major-axis and a line parallel to the x-axis
passing through the *center*. Angles are measured
clockwise. The portion of the ellipse drawn is the arc starting at
start-angle (0 is the x axis when the center is the origin) through
the length-angle.

*center* should be a position (see **make-position**).
*stream* should be a `cg-stream`

.

Contrast with **draw-ellipse-arc**,
which draws the ellipse on stream.

Copyright (c) 1998-2009, Franz Inc. Oakland, CA., USA. All rights reserved.

Documentation for Allegro CL version 8.1. The object described on this page has been modified in the 8.1 release; see the Release Notes.

Created 2007.4.30.

| Allegro CL version 8.1Object described on page has changed in 8.1. 8.0 version |