#! /bin/bash
# This script tests: pnmtosgi sgitopnm
# Also requires: rgb3toppm pamdepth pamtopnm


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}