#!/usr/local/bin/perl
# usage
# extractDOF.pl <filename> <bonename> [1|2|3]
#   where [1|2|3] is the DOF
# e.g.
# extractDOF.pl abc.Demo03.AMC lfoot 2
#
# get command line argument

$AMC = $ARGV[0];
$JOINT = $ARGV[1];
$DOF = $ARGV[2];

# reality check
# print "AMC file: \"" . $AMC . "\"\n";

# open BVH file
open (AMC,$AMC);

if ($DOF == 1) {
  while ($_ = <AMC>) {
#    if (/^(\d+)/) { print "$1 " ;}
    if (/^$JOINT\s*(-?\d+(\.\d+|\b))/) { print $1 . "\n"; }
  }
}

if ($DOF == 2) {
  while ($_ = <AMC>) {
#    if (/^(\d+)/) { print "$1 " ;}
    if (/^$JOINT\s+(-?\d+(\.\d+|\b))\s+(-?\d+(\.\d+|\b))/) { print $3 . "\n"; }
  }
}

if ($DOF == 3) {
  while ($_ = <AMC>) {
#    if (/^(\d+)/) { print "$1 " ;}
    if (/^$JOINT\s+(-?\d+(\.\d+|\b))\s+(-?\d+(\.\d+|\b))\s+(-?\d+(\.\d+|\b))/) { print $5 . "\n"; }
  }
}