#!/usr/bin/perl
#
#

$mypi = 3.14159;

######################################################
#  plot the "loose coupling" example with kc = k
  
  my($output_file, $term_options);

  # get the arguments
  $output_file = "loose_a.ps";
  $term_options = "postscript color enhanced 'Helvetica,18' ";

  $cmdfile = "gnuplot.in";
  
  open (CMDFILE, ">$cmdfile") || die("can't open $cmdfile for writing");
  printf CMDFILE "set output '$output_file' \n";
  printf CMDFILE "set term $term_options \n";

  # revert to some oldish default colors
  printf CMDFILE "set style line 1 lt rgb 'red' lw 3  \n";
  printf CMDFILE "set style line 2 lt rgb 'sea-green' lw 3  \n";
  printf CMDFILE "set style line 3 lt rgb 'blue' lw 3  \n";
  printf CMDFILE "set style line 4 lt rgb 'cyan' lw 3  \n";
  printf CMDFILE "set style line 5 lt rgb 'violet' lw 3  \n";


  printf CMDFILE "set grid \n";
  printf CMDFILE "set key top right \n";
  printf CMDFILE "set xzeroaxis  lw 3.5 \n";
  printf CMDFILE "set yzeroaxis  lw 3.5 \n";
  printf CMDFILE "set ylabel 'Position (m)  '  \n";
  printf CMDFILE "set xlabel 'Time (s) ' \n";
  printf CMDFILE "set title 'Motion of 2-block, 3-spring system: kc = k ' \n";

  $cmd = "plot [-1:15][-0.15:0.15] 'calc_loose_a.out' using 2:4 ";
  $cmd .= "        with lines ls 1 lw 4 t '' ";
  $cmd .= " , ";
  $cmd .= "                         'calc_loose_a.out' using 2:6 ";
  $cmd .= "        with lines ls 3 lw 3 t '' ";

  printf CMDFILE "$cmd \n";


  printf CMDFILE "set output \n";
  printf CMDFILE "quit \n";
  close(CMDFILE) ;
  
  $retval = `gnuplot < $cmdfile`;
  printf "retval is ..%s..\n", $retval;
  
  if ($term_options =~ /postscript/) {
    $psfile = $output_file;
    $giffile = $psfile;
    $giffile =~ s/.ps/.png/;
    $cmd = "convert -rotate 90 $psfile $giffile";
    printf "cmd is ..$cmd.. \n";
    $ret = `$cmd`;
  }




######################################################
#  plot the "loose coupling" example with kc = 0.1*k
  
  my($output_file, $term_options);

  # get the arguments
  $output_file = "loose_b.ps";
  $term_options = "postscript color enhanced 'Helvetica,18' ";

  $cmdfile = "gnuplot.in";
  
  open (CMDFILE, ">$cmdfile") || die("can't open $cmdfile for writing");
  printf CMDFILE "set output '$output_file' \n";
  printf CMDFILE "set term $term_options \n";

  # revert to some oldish default colors
  printf CMDFILE "set style line 1 lt rgb 'red' lw 3  \n";
  printf CMDFILE "set style line 2 lt rgb 'sea-green' lw 3  \n";
  printf CMDFILE "set style line 3 lt rgb 'blue' lw 3  \n";
  printf CMDFILE "set style line 4 lt rgb 'cyan' lw 3  \n";
  printf CMDFILE "set style line 5 lt rgb 'violet' lw 3  \n";


  printf CMDFILE "set grid \n";
  printf CMDFILE "set key top right \n";
  printf CMDFILE "set xzeroaxis  lw 3.5 \n";
  printf CMDFILE "set yzeroaxis  lw 3.5 \n";
  printf CMDFILE "set ylabel 'Position (m)  '  \n";
  printf CMDFILE "set xlabel 'Time (s) ' \n";
  printf CMDFILE "set title 'Motion of 2-block, 3-spring system: kc = 0.1*k ' \n";

  $cmd = "plot [-1:15][-0.15:0.15] 'calc_loose_b.out' using 2:4 ";
  $cmd .= "        with lines ls 1 lw 4 t '' ";
  $cmd .= " , ";
  $cmd .= "                         'calc_loose_b.out' using 2:6 ";
  $cmd .= "        with lines ls 3 lw 3 t '' ";

  printf CMDFILE "$cmd \n";


  printf CMDFILE "set output \n";
  printf CMDFILE "quit \n";
  close(CMDFILE) ;
  
  $retval = `gnuplot < $cmdfile`;
  printf "retval is ..%s..\n", $retval;
  
  if ($term_options =~ /postscript/) {
    $psfile = $output_file;
    $giffile = $psfile;
    $giffile =~ s/.ps/.png/;
    $cmd = "convert -rotate 90 $psfile $giffile";
    printf "cmd is ..$cmd.. \n";
    $ret = `$cmd`;
  }




######################################################
#  plot the "loose coupling" example with kc = 0.1*k
#       extend to longer time
  
  my($output_file, $term_options);

  # get the arguments
  $output_file = "loose_b2.ps";
  $term_options = "postscript color enhanced 'Helvetica,18' ";

  $cmdfile = "gnuplot.in";
  
  open (CMDFILE, ">$cmdfile") || die("can't open $cmdfile for writing");
  printf CMDFILE "set output '$output_file' \n";
  printf CMDFILE "set term $term_options \n";

  # revert to some oldish default colors
  printf CMDFILE "set style line 1 lt rgb 'red' lw 3  \n";
  printf CMDFILE "set style line 2 lt rgb 'sea-green' lw 3  \n";
  printf CMDFILE "set style line 3 lt rgb 'blue' lw 3  \n";
  printf CMDFILE "set style line 4 lt rgb 'cyan' lw 3  \n";
  printf CMDFILE "set style line 5 lt rgb 'violet' lw 3  \n";


  printf CMDFILE "set grid \n";
  printf CMDFILE "set key top right \n";
  printf CMDFILE "set xzeroaxis  lw 3.5 \n";
  printf CMDFILE "set yzeroaxis  lw 3.5 \n";
  printf CMDFILE "set ylabel 'Position (m)  '  \n";
  printf CMDFILE "set xlabel 'Time (s) ' \n";
  printf CMDFILE "set title 'Motion of 2-block, 3-spring system: kc = 0.1*k ' \n";

  $cmd = "plot [-1:80][-0.15:0.15] 'calc_loose_b.out' using 2:4 ";
  $cmd .= "        with lines ls 1 lw 4 t '' ";
  $cmd .= " , ";
  $cmd .= "                         'calc_loose_b.out' using 2:6 ";
  $cmd .= "        with lines ls 3 lw 3 t '' ";

  printf CMDFILE "$cmd \n";


  printf CMDFILE "set output \n";
  printf CMDFILE "quit \n";
  close(CMDFILE) ;
  
  $retval = `gnuplot < $cmdfile`;
  printf "retval is ..%s..\n", $retval;
  
  if ($term_options =~ /postscript/) {
    $psfile = $output_file;
    $giffile = $psfile;
    $giffile =~ s/.ps/.png/;
    $cmd = "convert -rotate 90 $psfile $giffile";
    printf "cmd is ..$cmd.. \n";
    $ret = `$cmd`;
  }




######################################################
#  plot the "loose coupling" example with kc = 0.02*k
  
  my($output_file, $term_options);

  # get the arguments
  $output_file = "loose_c.ps";
  $term_options = "postscript color enhanced 'Helvetica,18' ";

  $cmdfile = "gnuplot.in";
  
  open (CMDFILE, ">$cmdfile") || die("can't open $cmdfile for writing");
  printf CMDFILE "set output '$output_file' \n";
  printf CMDFILE "set term $term_options \n";

  # revert to some oldish default colors
  printf CMDFILE "set style line 1 lt rgb 'red' lw 3  \n";
  printf CMDFILE "set style line 2 lt rgb 'sea-green' lw 3  \n";
  printf CMDFILE "set style line 3 lt rgb 'blue' lw 3  \n";
  printf CMDFILE "set style line 4 lt rgb 'cyan' lw 3  \n";
  printf CMDFILE "set style line 5 lt rgb 'violet' lw 3  \n";


  printf CMDFILE "set grid \n";
  printf CMDFILE "set key top right \n";
  printf CMDFILE "set xzeroaxis  lw 3.5 \n";
  printf CMDFILE "set yzeroaxis  lw 3.5 \n";
  printf CMDFILE "set ylabel 'Position (m)  '  \n";
  printf CMDFILE "set xlabel 'Time (s) ' \n";
  printf CMDFILE "set title 'Motion of 2-block, 3-spring system: kc = 0.02*k ' \n";

  $cmd = "plot [-1:15][-0.15:0.15] 'calc_loose_c.out' using 2:4 ";
  $cmd .= "        with lines ls 1 lw 4 t '' ";
  $cmd .= " , ";
  $cmd .= "                         'calc_loose_c.out' using 2:6 ";
  $cmd .= "        with lines ls 3 lw 3 t '' ";

  printf CMDFILE "$cmd \n";


  printf CMDFILE "set output \n";
  printf CMDFILE "quit \n";
  close(CMDFILE) ;
  
  $retval = `gnuplot < $cmdfile`;
  printf "retval is ..%s..\n", $retval;
  
  if ($term_options =~ /postscript/) {
    $psfile = $output_file;
    $giffile = $psfile;
    $giffile =~ s/.ps/.png/;
    $cmd = "convert -rotate 90 $psfile $giffile";
    printf "cmd is ..$cmd.. \n";
    $ret = `$cmd`;
  }




######################################################
#  plot the "loose coupling" example with kc = 0.02*k
#       extend to longer time
  
  my($output_file, $term_options);

  # get the arguments
  $output_file = "loose_c2.ps";
  $term_options = "postscript color enhanced 'Helvetica,18' ";

  $cmdfile = "gnuplot.in";
  
  open (CMDFILE, ">$cmdfile") || die("can't open $cmdfile for writing");
  printf CMDFILE "set output '$output_file' \n";
  printf CMDFILE "set term $term_options \n";

  # revert to some oldish default colors
  printf CMDFILE "set style line 1 lt rgb 'red' lw 3  \n";
  printf CMDFILE "set style line 2 lt rgb 'sea-green' lw 3  \n";
  printf CMDFILE "set style line 3 lt rgb 'blue' lw 3  \n";
  printf CMDFILE "set style line 4 lt rgb 'cyan' lw 3  \n";
  printf CMDFILE "set style line 5 lt rgb 'violet' lw 3  \n";


  printf CMDFILE "set grid \n";
  printf CMDFILE "set key top right \n";
  printf CMDFILE "set xzeroaxis  lw 3.5 \n";
  printf CMDFILE "set yzeroaxis  lw 3.5 \n";
  printf CMDFILE "set ylabel 'Position (m)  '  \n";
  printf CMDFILE "set xlabel 'Time (s) ' \n";
  printf CMDFILE "set title 'Motion of 2-block, 3-spring system: kc = 0.02*k ' \n";

  $cmd = "plot [-1:80][-0.15:0.15] 'calc_loose_c.out' using 2:4 ";
  $cmd .= "        with lines ls 1 lw 4 t '' ";
  $cmd .= " , ";
  $cmd .= "                         'calc_loose_c.out' using 2:6 ";
  $cmd .= "        with lines ls 3 lw 3 t '' ";

  printf CMDFILE "$cmd \n";


  printf CMDFILE "set output \n";
  printf CMDFILE "quit \n";
  close(CMDFILE) ;
  
  $retval = `gnuplot < $cmdfile`;
  printf "retval is ..%s..\n", $retval;
  
  if ($term_options =~ /postscript/) {
    $psfile = $output_file;
    $giffile = $psfile;
    $giffile =~ s/.ps/.png/;
    $cmd = "convert -rotate 90 $psfile $giffile";
    printf "cmd is ..$cmd.. \n";
    $ret = `$cmd`;
  }



######################################################
#  plot the "loose coupling" example with kc = 0.02*k
#       extend to much longer time
  
  my($output_file, $term_options);

  # get the arguments
  $output_file = "loose_c3.ps";
  $term_options = "postscript color enhanced 'Helvetica,18' ";

  $cmdfile = "gnuplot.in";
  
  open (CMDFILE, ">$cmdfile") || die("can't open $cmdfile for writing");
  printf CMDFILE "set output '$output_file' \n";
  printf CMDFILE "set term $term_options \n";

  # revert to some oldish default colors
  printf CMDFILE "set style line 1 lt rgb 'red' lw 3  \n";
  printf CMDFILE "set style line 2 lt rgb 'sea-green' lw 3  \n";
  printf CMDFILE "set style line 3 lt rgb 'blue' lw 3  \n";
  printf CMDFILE "set style line 4 lt rgb 'cyan' lw 3  \n";
  printf CMDFILE "set style line 5 lt rgb 'violet' lw 3  \n";


  printf CMDFILE "set grid \n";
  printf CMDFILE "set key top right \n";
  printf CMDFILE "set xzeroaxis  lw 3.5 \n";
  printf CMDFILE "set yzeroaxis  lw 3.5 \n";
  printf CMDFILE "set ylabel 'Position (m)  '  \n";
  printf CMDFILE "set xlabel 'Time (s) ' \n";
  printf CMDFILE "set title 'Motion of 2-block, 3-spring system: kc = 0.02*k ' \n";

  $cmd = "plot [-1:350][-0.15:0.15] 'calc_loose_c.out' using 2:4 ";
  $cmd .= "        with lines ls 1 lw 4 t '' ";
  $cmd .= " , ";
  $cmd .= "                         'calc_loose_c.out' using 2:6 ";
  $cmd .= "        with lines ls 3 lw 3 t '' ";

  printf CMDFILE "$cmd \n";


  printf CMDFILE "set output \n";
  printf CMDFILE "quit \n";
  close(CMDFILE) ;
  
  $retval = `gnuplot < $cmdfile`;
  printf "retval is ..%s..\n", $retval;
  
  if ($term_options =~ /postscript/) {
    $psfile = $output_file;
    $giffile = $psfile;
    $giffile =~ s/.ps/.png/;
    $cmd = "convert -rotate 90 $psfile $giffile";
    printf "cmd is ..$cmd.. \n";
    $ret = `$cmd`;
  }







exit 0;
