| Allegro CL version 8.2 Unrevised from 8.1 to 8.2. 8.1 version |
Arguments: stream
Begins collecting subsequent line-drawing function calls on
stream into a "path". Must be followed by a call
to end-drawing-path at some point,
which actually draws the entire path. stream
should be a cg-stream
.
A path is useful for filling a collection of lines and curves as a unit.
To ensure that end-drawing-path is always called for each call to begin-drawing-path, it is convenient to use with-drawing-path instead of separate calls to begin-drawing-path and end-drawing-path. See also: line-end, with-line-end, line-join, with-line-join, end-drawing-path, and with-drawing-path.
Drawing paths are not implemented on GTK. If you need to draw a connected series of lines with the proper line-join effect, you may need to call draw-polyline instead of multiple calls to draw-line, though the line-join setting may have no effect on some machines in any case.
Copyright (c) 1998-2016, Franz Inc. Oakland, CA., USA. All rights reserved.
This page was not revised from the 8.1 page.
Created 2010.1.21.
| Allegro CL version 8.2 Unrevised from 8.1 to 8.2. 8.1 version |