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

**Arguments: ***
stream center smaj-axis
smin-axis smaj-axis-angle
start-angle length-angle
*

Draws the specified filled ellipse sector on
*stream*. An ellipse-sector is an ellipse-arc with
the endpoints of the arc connected to the center of the ellipse, like
a piece of an elliptical pie.

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*. The portion of the
ellipse drawn is the sector starting at
*start-angle* (0 is the x axis when the center is
the origin) through the *length-angle*.

Angles are measured in degrees clockwise from the 3 o'clock position
(that is, along or parallel to the x axis). The endpoint coordinates
may be determined by calling **ellipse-start-and-end**.

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

.

Contrast with **erase-contents-ellipse-sector** which
erases the filled ellipse from stream.

Copyright (c) 1998-2022, Franz Inc. Lafayette, CA., USA. All rights reserved.

This page was not revised from the 10.0 page.

Created 2019.8.20.

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