pampop9

   Updated: 02 March 2003
   Table Of Contents

NAME

   pampop9 - simulate a multi-lens camera such as the Pop9

SYNOPSIS

   pampop9 pnmfile|- xtiles ytiles xdelta ydelta

DESCRIPTION

   This program is part of Netpbm.

   pampop9 tiles your starting image xtiles by ytiles times. Each
of these
   tiles  is taken from a slightly different  offset  within  the
source, as
   determined by the xdelta and ydelta arguments.

   The	top  line of tiles in the output is taken from the top of
the source
   image, the second starts with the ydelta row of the source im-
age, the next
   with	 the 2*ydelta row, and so on. Similarly, the first column
of tiles in
   the output is taken from the left of	 the  source  image,  the
next starts with
   the	xdelta	column, the next with the 2*xdelta column, and so
on.


EXAMPLES

   With a 100 x 100 source image, then the output image from pam-
pop9 3 3 10 10
   will	 appear to be a three-by-three grid, each tile being 80 x
80 pixels. If
   the origin is taken to be the top-left corner,  then	 the  top
row of tiles
   will	 take  start  at (0, 0) (10, 0) (20, 0) within the source
image, the
   middle row will start at (0, 10) (10, 10) (20,  10),	 and  the
bottom row at
   (0, 20) (10, 20) (20, 20).

HISTORY

   pampop9  was	 new in Netpbm 10.15 (April 2003). It was adapted
slightly from
   pampup9, which was distributed  by  Robert  Tinsley.	 At  that
time, it was
   distributed	via  http://www.thepoacher.net/code/#pampup9.  By
October 2004,
   that URL no longer was valid.

SEE ALSO

   pnmtile

AUTHOR

   Copyright (C) 2003 by Robert Tinsley.  This	software  is  re-
leased under the
   GPL ( http://www.fsf.org/licenses/gpl.txt).
     _________________________________________________________________

Table Of Contents

     * NAME
     * SYNOPSIS
     * DESCRIPTION
     * EXAMPLES
     * SEE ALSO
     * HISTORY
     * AUTHOR

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