#! /bin/bash
# This script tests: pamslice
# Also requires: pnmtopnm

# Slice rows, one by one, out of testgrid.pbm.
# Add header and reconstruct pbm image.
# Note that in pamslice output 0 is white and 1 is black: opposite of PBM
# Should print 2425386270 41

(echo "P1"
 echo "14 16"
 seq 0 15 | while read i; 
     do
     ${PBM_TESTPREFIX}pamslice -row=$i testgrid.pbm  | \
      awk '{print $2}' | sed 'y/01/10/'; 
     done ) |  ${PBM_BINPREFIX}pnmtopnm | cksum

# Slice rows, one by one, out of testimg.ppm.
# Add header and reconstruct pbm image.
# Should print 1926073387 101484

(echo "P3"
 echo "227 149"
 echo "255"
 seq 0 148 | while read i; 
     do
     ${PBM_TESTPREFIX}pamslice -row=$i testimg.ppm  | awk '{print $2, $3, $4}'; 
     done ) |  ${PBM_BINPREFIX}pnmtopnm | cksum