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GETCX3D(1)		    General Commands Manual		    GETCX3D(1)

NAME
       getcx3d - display an RLE(5) image on the	Chromatics

SYNOPSIS
       getcx3d [ -O ] [	-B ] [ -d ] [ -t ] [ -p	x y ] [	-l ] [ infile

DESCRIPTION
       This  program  displays an RLE(5) image on a Chromatics CX 1536 (raster
       dimensions 1536x1152x24)	running	CX3D.

       Getcx3d will display black and white and	full  color  images,  ignoring
       the  alpha  channel  if	present.   All	three background styles	of the
       RLE(5) format are supported: (0)	write every pixel, (1)	do  not	 write
       background pixels (overlay) and (2) clear to background;	see the	-O and
       -B options.  You	may position an	image at some place other than (0,  0)
       on  the	screen;	 see the -p option.  The -d and	-t options magnify the
       image; see below.  The bounding box of the image	is the	only  part  of
       the  image  that	 is ever displayed (i.e. clear to background will only
       clear the area within the bounding box, not the	entire	screen.)   The
       color  maps within the CX are not changed.  Colors are passed through a
       gamma correction	map (gamma_value = 2.5 in round(255 * ((x / 255) ^  (1
       /  gamma_value))),  judged best for the monitor connected to the	CX) on
       the host	before they are	sent to	the CX.	 Use -l	to pass	colors through
       a  linear  map.	 Finally, any color maps specified by the RLE file are
       ignored.	 This is a bug.

OPTIONS
       -O     Force overlay background style.  Ignoring	the  background	 style
	      indicated	 in  the RLE file this option will overlay the RLE im-
	      age, causing the previous	image on the CX	to show	through	pixels
	      of background color of the present image.

       -B     Force  clear to background style.	 Ignoring the background style
	      indicated	in the RLE file	this option will  clear	 the  bounding
	      box area of the RLE file before displaying the image.

       -d     Double  the image	size.  Display four pixels for every one pixel
	      of the RLE file.

       -t     Triple the image size.  Display nine pixels for every one	 pixel
	      of the RLE file.

       -p x y Reposition the image.  Place the left corner of the image	(0, 0)
	      at some place other than the left	corner of the CX.   Note  that
	      the  left	 corner	of the image is	(0, 0),	which may be different
	      from the left corner of the bounding  box	 of  the  image.   The
	      bounding	box  is	 the  only area	of the image that is ever dis-
	      played.

       -l     Use a linear map.	 By default all	colors are  passed  through  a
	      gamma correction map on the host before they are sent to the CX.
	      This option causes no mapping to take place.

       infile Name of file to display.	If not specified or if -, an  RLE  en-
	      coded image is read from the standard input.

	      Any  number  of  images  may be displayed	with one invocation of
	      getcx3d.

FILES
       /dev/dr0

SEE ALSO
       urt(1), RLE(5).

AUTHOR
       W. Thomas McCollough, Jr., University of	Utah

BUGS
       Color maps are not loaded.

       If interrupted with a catchable signal, getcx3d will close the CX  gen-
       tly,  allowing future access without rebooting.	If getcx3d is stopped,
       however,	and then (before it is continued) killed with any signal, then
       the CX may be left in a bad state.

4th Berkeley Distribution	 June 24, 1986			    GETCX3D(1)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | FILES | SEE ALSO | AUTHOR | BUGS

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