#! /bin/bash
# This script tests: pamcrater pamshadedrelief
# Also requires: pamstack pamvalidate pamcut pamflip


# We use the undocumented --test and --radius options of pamcrater.
# pamcrater --test --radius=N
# The above draws a single crater of radius N.
# The resulting image should be symmetric.

tmpdir=${tmpdir:-/tmp}

test_pam=${tmpdir}/test.pam
testshaded_pam=${tmpdir}/testshaded_pam
test10_pam=${tmpdir}/test10.pam
test50_pam=${tmpdir}/test50.pam
test100_pam=${tmpdir}/test100.pam
test150_pam=${tmpdir}/test150.pam

# Test 1.  Should print 4 three times

pamcrater --test --radius=10 > $test10_pam
pamcrater --test --radius=50 > $test50_pam
pamcrater --test --radius=100 > $test100_pam
pamcrater --test --radius=150 > $test150_pam

pamstack ${test10_pam} ${test50_pam} ${test100_pam} ${test150_pam} |
  pamvalidate > ${test_pam}

for i in 1 10 70
  do
  ( pamcut -top=$((128 + $i)) -height=1 ${test_pam} | cksum &&
    pamcut -top=$((128 - $i)) -height=1 ${test_pam} | cksum &&
    pamcut -left=$((128 + $i)) -width=1 ${test_pam} | pamflip -xy | cksum &&
    pamcut -left=$((128 - $i)) -width=1 ${test_pam} | pamflip -xy | cksum
  ) | uniq -c | awk '{print $1}'
  done

rm ${test_pam} ${test10_pam} ${test50_pam}

# Test 2.  Should print 2 three times

pamshadedrelief ${test100_pam} > ${testshaded_pam}

( pamcut -top=$((128 + 12)) -height=1  ${testshaded_pam} | cksum &&
  pamcut -top=$((128 - 12)) -height=1  ${testshaded_pam} | cksum &&
  pamcut -top=$((128 + 31)) -height=1  ${testshaded_pam} | cksum &&
  pamcut -top=$((128 - 31)) -height=1  ${testshaded_pam} | cksum &&
  pamcut -top=$((128 + 99)) -height=1  ${testshaded_pam} | cksum &&
  pamcut -top=$((128 - 99)) -height=1  ${testshaded_pam} | cksum
) | uniq -c | awk '{print $1}'

rm ${testshaded_pam} ${test100_pam}