.TH XDL 1 "21 Aug 1992"
.SH NAME
xdl \- display DL animations in an X window.
.SH SYNOPSIS
.B xdl
.RI [ \-h ]
.RI [ \-z ]
.RI [ \-r\ frames/second ]
.RI [ file ]
.SH DESCRIPTION
.I Xdl
reads a file in DL format and displays the animation in that file 
in an X window.
The DL file is read from either the standard input or the
specified
.IR file .
The program can be run on monochrome (1 bit per pixel), colormapped
(8 bits per pixel) and full color (24 bits per pixel) systems. On 
monochrome systems the images is halftoned with the Floyd-Steinberg 
algorithm.
.SH OPTIONS
.TP
.B \-h
Write some help about how the program should be started.
.TP
.B \-z
If the animation is in medium format (160 x 100) it will be zoomed
up to large format (320 x 200). If run on a color display the zoom
operation is simple nearest neighbour, on a monochrome display some
smoothing will be performed. If the animation is in large format
this switch will be ignored.
.TP
.B \-r frames/second
Determines the rate of the animation, ie how many frames per second
that should be displayed. The minimum is 2 and the default is 25. The
given rate is a maximum.
.SH EXAMPLES
Display the animation foo.dl at 25 frames per second.
.IP 
xdl foo.dl
.PP 
Display the animation fie.dl, zoomed to large format, at 12 frames
per second.
.IP 
xdl -z -r 12 fie.dl
.SH BUGS
.PP
There should be smoothing when zooming in color also.
.PP
The program talks too much, a -quiet flag should be added.
.PP
The code is unreadable.
.PP
.SH AUTHOR
Jonas Yngvesson <jonas-y@isy.liu.se>
.PP
The program is derived from dltogl by George Phillips <phillips@cs.ubc.ca>
.PP
The suggestion (and code) to allow the user to set the animation
rate came from Per Beremark <per.beremark@telelogic.se>