| Allegro CL version 10.1Unrevised from 10.0 to 10.1. 10.0 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) 1998-2017, Franz Inc. Oakland, CA., USA. All rights reserved.

This page was not revised from the 10.0 page.

Created 2017.2.15.

| Allegro CL version 10.1Unrevised from 10.0 to 10.1. 10.0 version |