fill-ellipse-sector

Generic Function

Package: common-graphics

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.) The ellipse is rotated so that the semi-major-axis makes angle semi-major-axis-angle with the x-axis passing through the center. Angles are measured clockwise. 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. Again, angles are measured clockwise.

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

Note: incompatible change in release 6.0: in releases prior to 6.0, when a frame-with-single-child instance was passed to this operator, the operator was actually applied to the child (the result of applying frame-child to the frame-with-single-child instance). In release 6.0, this redirection no longer occurs. If you intend this operator to apply to the frame-child, pass that to this operator rather than the parent. This is a non-backward-compatible-change. See the release notes for more information.

Common Graphics and IDE documentation is described in About Common Graphics and IDE documentation in cgide.htm.

The documentation is described in introduction.htm and the index is in index.htm.

Copyright (c) 1998-2000, Franz Inc. Berkeley, CA., USA. All rights reserved.

Created 2000.10.5.