#! /bin/bash

# This script tests: pnmtosgi sgitopnm

# Also requires: rgb3toppm

a_sgi=${tmpdir}/a.sgi

a_red=${tmpdir}/a.red

a_grn=${tmpdir}/a.grn

a_blu=${tmpdir}/a.blu

# Test 1.  Should produce 1926073387 101484 twice

pnmtosgi -rle testimg.ppm | tee ${a_sgi} | sgitopnm  | cksum

sgitopnm -channel=0  ${a_sgi} > ${a_red}

sgitopnm -channel=1  ${a_sgi} > ${a_grn}

sgitopnm -channel=2  ${a_sgi} > ${a_blu}

rgb3toppm ${a_red} ${a_grn} ${a_blu} | cksum

rm ${a_sgi} ${a_red} ${a_grn} ${a_blu}

b_sgi=${tmpdir}/b.sgi

b_red=${tmpdir}/b.red

b_grn=${tmpdir}/b.grn

b_blu=${tmpdir}/b.blu

# Test 2.  Should produce 1926073387 101484 twice

pnmtosgi -verbatim testimg.ppm | tee ${b_sgi} | sgitopnm  | cksum

sgitopnm -channel=0  ${b_sgi} > ${b_red}

sgitopnm -channel=1  ${b_sgi} > ${b_grn}

sgitopnm -channel=2  ${b_sgi} > ${b_blu}

rgb3toppm ${b_red} ${b_grn} ${b_blu} | cksum

rm ${b_sgi} ${b_red} ${b_grn} ${b_blu}

# Test 3.  Should produce 2425386270 41 twice

pnmtosgi testgrid.pbm | sgitopnm | cksum             # Defaults to -rle

pnmtosgi -verbatim testgrid.pbm | sgitopnm | cksum

testgrid_pgm=${tmpdir}/testgrid.pgm

# Test 4. Should produce 2394972481 463 twice

pamdepth 65535 testgrid.pbm | pamtopnm | tee ${testgrid_pgm} | \

  pnmtosgi -rle | sgitopnm | cksum

pnmtosgi -verbatim ${testgrid_pgm} | sgitopnm | cksum

rm ${testgrid_pgm}