#! /bin/sh
# This script tests: pnmpad pnmmargin
# Also requires: pamcat pamcut pamenlarge pbmmake pnmmargin ppmmake ppmpat

tmpdir=${tmpdir:-/tmp}
padded_pbm=${tmpdir}/padded.pbm
argyle_ppm=${tmpdir}/argyle.ppm
padded_ppm=${tmpdir}/padded.ppm

spacer_pnm=${tmpdir}/spacer.pnm

# define function
addmargin () {

# This function takes 3 positional parameters:
#   $1: color black white or gofigure
#   $2: color string (ignore if black white or gofigure)
#   $3: margin
#   $4: filename

    case $1 in
        -color) ppmmake $2 $3 $3 > ${spacer_pnm}; infile=$4 ;;
        -black) pbmmake -black $2 $2 > ${spacer_pnm}; infile=$3 ;;
        -white) pbmmake -white $2 $2 > ${spacer_pnm}; infile=$3 ;;
        *) pamcut -t 0 -l 0 -w 1 -h 1 $2 | pamenlarge $1 > ${spacer_pnm}; infile=$2 ;;
    esac
    pamcat -lr ${spacer_pnm} ${infile} ${spacer_pnm} |\
        pamcat -tb ${spacer_pnm} - ${spacer_pnm}
    rm ${spacer_pnm}
}

echo "Test 1.  Should print match three times"

pnmmargin -black 5 maze.pbm > ${padded_pbm} 
pnmmargin -black 1 maze.pbm | pnmpad -black -t 4 -b 4 -l 4 -r 4 |\
    cmp -s ${padded_pbm} - && echo "match" || echo "no match"
pnmmargin 1 maze.pbm | pnmpad -black -t 4 -b 4 -l 4 -r 4 |\
    cmp -s ${padded_pbm} - && echo "match" || echo "no match"
pnmmargin -black 1 maze.pbm | pnmpad -extend-edge -t 4 -b 4 -l 4 -r 4 |\
    cmp -s ${padded_pbm} - && echo "match" || echo "no match"


echo "Test 2.  Should print match four times"

addmargin -black 5 maze.pbm |\
    cmp -s ${padded_pbm} - && echo "match" || echo "no match"
addmargin -black 1 maze.pbm | pnmpad -black -t 4 -b 4 -l 4 -r 4 |\
    cmp -s ${padded_pbm} - && echo "match" || echo "no match"
addmargin 1 maze.pbm | pnmpad -black -t 4 -b 4 -l 4 -r 4 |\
    cmp -s ${padded_pbm} - && echo "match" || echo "no match"
addmargin -black 1 maze.pbm | pnmpad -extend-edge -t 4 -b 4 -l 4 -r 4 |\
    cmp -s ${padded_pbm} - && echo "match" || echo "no match"

rm ${padded_pbm}

echo "Test 3.  Should print match five times"

ppmpat -argyle1 -color=rgb:20/30/ff,rgb:70/80/ff 30 20 > ${argyle_ppm}

addmargin 3 ${argyle_ppm} > ${padded_ppm}

addmargin -color rgb:20/30/ff 1 ${argyle_ppm} |\
  pnmpad -color=rgb:20/30/ff -t 2 -b 2 -r 2 -l 2 |\
    cmp -s ${padded_ppm} - && echo "match" || echo "no match"
addmargin -color rgb:20/30/ff 1 ${argyle_ppm} |\
  pnmpad -color=rgb:20/30/ff -t 2 -b 2 -r 2 -l 2 |\
    cmp -s ${padded_ppm} - && echo "match" || echo "no match"
addmargin 1 ${argyle_ppm} |\
  pnmpad -extend-edge -t 2 -b 2 -r 2 -l 2 |\
    cmp -s ${padded_ppm} - && echo "match" || echo "no match"

pnmpad -color rgb:20/30/ff -t 3 -b 3 -r 3 -l 3 ${argyle_ppm} |\
    cmp -s ${padded_ppm} - && echo "match" || echo "no match"

pnmpad -detect-background -t 3 -b 3 -r 3 -l 3 ${argyle_ppm} |\
    cmp -s ${padded_ppm} - && echo "match" || echo "no match"


rm ${argyle_ppm} ${padded_ppm}