File Coverage

blib/lib/SlideMap.pm

Criterion	Covered	Total	%
statement	180	341	52.7
branch	56	122	45.9
condition	15	48	31.2
subroutine	25	37	67.5
pod	0	35	0.0
total	276	583	47.3

####################################################################
# Copyright @ 2002 Joseph A. White and The Institute for Genomic
#	Research (TIGR)
# All rights reserved.
####################################################################
package SlideMap;

require 5.005_02;
use strict;
#use warnings;
use vars qw(@ISA @EXPORT %EXPORT_TAGS @EXPORT_OK $VERSION);

require Exporter;

@ISA = qw(Exporter);

# Items to export into callers namespace by default. Note: do not export
# names by default without a very good reason. Use EXPORT_OK instead.
# Do not simply export all your public functions/methods/constants.

# This allows declaration	use SlideMap ':all';
# If you do not need this, moving things directly into @EXPORT or @EXPORT_OK
# will save memory.
%EXPORT_TAGS = ( 'all' => [ qw() ] );

@EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } );

@EXPORT = qw();

$VERSION = '1.4';


# Preloaded methods go here.

package SlideMap;
my %defaults;
{
	## set default values in case user neglects to do so; use old CT-72 format
	%defaults = (machine => 'IAS', x_pin => 2, y_pin => 6, x_spacing => 24,
				y_spacing => 25, x_repeat => 1, y_repeat => 1, x_pitch => 0,
				y_pitch => 0, num_spots => 0);
}

package SlideMap;
sub new {
	my $class = shift;
	my %args = (%defaults, @_);

	my $self = bless {
		# print head dimensions
		_x_pin => int($args{x_pin}),
		_y_pin => int($args{y_pin}),
		# block dimensions (in spots)
		_xspacing => int($args{x_spacing}),
		_yspacing => int($args{y_spacing}),
		# for future use; define the spacing in micrometers
		_x_pitch => int($args{x_pitch}),
		_y_pitch => int($args{y_pitch}),
		# microtitre plate dimensions (in wells)
		_max_plate_row => 0,
		_max_plate_col => 0,
		# no. of dips in x (row) dimension
		_max_xpass => 0,
		# no. of dips in y (col) dimension
		_max_ypass => 0,
		# total # of dips per plate
		_pass_plate => 0,
		# number of wells per plate
		_num_wells => 0,
		# total number of spots on slide; default 0
		_num_spots => int($args{num_spots}),,
		# absolute array dimensions
		_max_row => 0,
		_max_col => 0,
		# total number of plates to fill array
		_num_plates => 0,
		# print order (labels for plates)
		_plates => [],
		# 1 => 96-well, 2=> 384-well
		_format => 1,
		# 0 => normal mode, 1 => repeat mode; for MD/MD3
		_repeat => 0,
		# number repeated blocks; 1 => none, 2 => 2 reps, etc.
		_x_repeat => int($args{x_repeat}),
		_y_repeat => int($args{y_repeat}),
		# 0 => top->bottom printing, 1 => left->right printing
		_print_dir => 0,
		# 0 => (1,1)->B1 (IAS 12-pen mode), 1 => (1,1)->A1
		_nocomplement => 0,
		_machine => $args{machine},
		# the slide map (row,col,plate,well)
		_map => [],
		# for Lucidia printer
		_paramA => 0,
		_paramB => 0,
		_convert_well => {},
		_convert_spot => {},
		_test => $args{test}

	}, $class;

	if($args{machine} eq 'MD3') {
		$self->{_format} = 2;
		$self->{_print_dir} = 1;
		$self->{_x_repeat} = 2;
		$self->{_x_repeat} = 1;
		$self->{_xspacing} = 32;
		$self->{_x_pin} = 1;
		$self->{_y_pin} = 12;
		$self->{_nocomplement} = 1;
		if($self->{_yspacing} > 12) { $self->{_yspacing} = 12; }
	} elsif($args{machine} eq 'Lucidia') {
		$self->{_format} = 2;
		$self->{_print_dir} = 1;
		$self->{_x_pin} = 2;
		$self->{_y_pin} = 12;
	} elsif($args{machine} eq 'Stanford') {
		$self->{_format} = 2;
		$self->{_print_dir} = 0;
		$self->{_x_pin} = 4;
		$self->{_y_pin} = 4;
		$self->{_nocomplement} = 0;
	} elsif($args{machine} eq 'MD') {
		$self->{_x_repeat} = 2;
		$self->{_x_repeat} = 1;
		$self->{_yspacing} = 16;
		$self->{_x_pin} = 1;
		$self->{_y_pin} = 6;
		$self->{_nocomplement} = 1;
		if($self->{_xspacing} > 16) { $self->{_yspacing} = 16; }
	} elsif($args{machine} eq 'IAS') {
	} else {
		$self->{_format} = 1;
		$self->{_print_dir} = 0;
		$self->{_x_repeat} = 1;
		$self->{_x_repeat} = 1;
		$self->{_nocomplement} = 0;
	}
	&initialize($self);

	return $self;
}

package SlideMap;
sub initialize {

	my $self = shift;
	my $flag = shift || 0;

	if($self->{_xspacing} < 1 || $self->{_xspacing} eq '') {
		die "x_spacing value not set\n"; }
	if($self->{_yspacing} < 1 || $self->{_yspacing} eq '') {
		die "y_spacing value not set\n"; }
	if($self->{_x_repeat} < 1 || $self->{_x_repeat} > 4) {
		die "x_repeat must be an integer between 1 and 4.\n"; }
	if($self->{_y_repeat} < 1 || $self->{_y_repeat} > 4) {
		die "x_repeat must be an integer between 1 and 4.\n"; }

	if($self->{_format} == 2) {
		$self->{_max_plate_row} = 16;
		$self->{_max_plate_col} = 24;
		$self->{_max_xpass} = 16 / $self->{_x_pin};
		$self->{_max_ypass} = 24 / $self->{_y_pin};
	} else {
		$self->{_max_plate_row} = 8;
		$self->{_max_plate_col} = 12;
		$self->{_max_xpass} = 8 / $self->{_x_pin};
		$self->{_max_ypass} = 12 / $self->{_y_pin};
	}
	if($self->{_x_pin} > $self->{_max_plate_row}) {
		die "x_pin must be an even integer <= plate row dimension\n"; }
	if($self->{_y_pin} > $self->{_max_plate_col}) {
		die "y_pin must be an even integer <= plate column dimension\n"; }
	$self->{_num_wells} = $self->{_max_plate_row}
		* $self->{_max_plate_col};
	$self->{_pass_plate} = $self->{_max_xpass}
		* $self->{_max_ypass};
	$self->{_max_row} = $self->{_yspacing} * $self->{_y_pin}
		* $self->{_y_repeat};
	$self->{_max_col} = $self->{_xspacing} * $self->{_x_pin}
		* $self->{_x_repeat};
	$self->{_num_spots} = $self->{_max_row} * $self->{_max_col};
	$self->{_num_plates} = int(($self->{_num_spots} - 1)/
		($self->{_x_repeat} * $self->{_y_repeat}
		* $self->{_num_wells})) + 1;
#	$self->{_max_pass} = $self->{_num_plates} * $self->{_pass_plate};
	if(! $flag) {
		@{ $self->{_plates} } = ( 1 .. $self->{_num_plates} );
	}
	$self->{_paramA} = $self->{_max_plate_row}/(2 * $self->{_x_pin});
	$self->{_paramB} = 2 * $self->{_x_pin};

	my $code1 = &make_convert_well($self);
	$self->{_convert_well} = eval "sub { $code1 }" or die $!;
	my $code2 = &make_convert_spot($self);
	$self->{_convert_spot} = eval "sub { $code2 }" or die $!;

}

package SlideMap;
sub fill_map {
	my $self = shift;
	for my $i (1 .. $self->{_max_row}) {
		for my $j (1 .. $self->{_max_col}) {
			my $spot = (($i - 1) * $self->{_max_col}) + $j;
			my ($plate, $well) = &convert_spot($self, $i, $j);
			my $current_plate = $self->{_plates}->[$plate - 1];
			$self->{_map}->[$spot] = [ $i, $j, $current_plate,
				$well ];
		}
	}
	return $self->{_map};
}

package SlideMap;
sub diagnostics {
	my($self) = shift;
	print "machine: $self->{_machine}\n";
	print "x_pin: $self->{_x_pin}\ty_pin: $self->{_y_pin}\txspacing:"
		. " $self->{_xspacing}\t";
	print "yspacing: $self->{_yspacing}\n";
	print "x_repeat: $self->{_x_repeat}\ty_repeat: $self->{_y_repeat}\n";
	if($self->{_machine} eq 'Lucidia') {
		print "paramA: $self->{_paramA}\tparamB: $self->{_paramB}\n";
	}
	print "max_xpass: $self->{_max_xpass}\tmax_ypass: "
		. "$self->{_max_ypass}\t";
	print "pass_plate: $self->{_pass_plate}\n";
	print "max_row: $self->{_max_row}\tmax_col: $self->{_max_col}"
		. "\tnum_wells: ";
	print "$self->{_num_wells}: \tnum_spots: $self->{_num_spots}\n";
	print "format: $self->{_format}\tprint_dir: $self->{_print_dir}\n";
	print "nocomplement: $self->{_nocomplement}\trepeat mode: "
		. "$self->{_repeat}\n";
	print "num_plates: $self->{_num_plates}\n";
	print "plate_order: @{ $self->{_plates} }\n";
}

package SlideMap;
sub print_spots {
	my $self = shift;
	my $w = shift || 0;
	for my $y (1 .. $self->{_max_row}) {
			for my $x (1 .. $self->{_max_col}) {
				my $array_row = $y;
				my $array_col = $x;
				my $meta_row = int(($array_row - 1)
						/ $self->{_yspacing})  + 1;
				my $meta_col = int(($array_col - 1)
						/ $self->{_xspacing})  + 1;
				my ($plate_num, $well, $plate_row, $plate_col)
					= &convert_spot($self,$array_row,$array_col);
				my $block = ((($meta_row) - 1) * $self->{_x_pin})
					+ $meta_col;
				if(length($plate_num) == 1) {
					$plate_num = "00" . $plate_num;
				} elsif(length($plate_num) == 2) {
					$plate_num = "0" . $plate_num;
				}
				if($w == 1) {
					if(length($well) == 1) {
						$well = "00" . $well;
					} elsif(length($well) == 2) {
						$well = "0" . $well;
					}
					print "$array_row\t$array_col\t$plate_num\t"
						. "$well\n";
				} else {
					my $rowstr = substr("ABCDEFGHIJKLMNOP",
							$plate_row - 1, 1);
					if(length($plate_col) == 1) {
						$plate_col = "0" . $plate_col;
					}
					print "$array_row\t$array_col\t$plate_num\t"
						. "$rowstr$plate_col\n";
				}
			}
#		}
	}
}

package SlideMap;
sub print_wells {
	my $self = shift;
	my $w = shift || 0;
	foreach my $plate_num (@{ $self->{_plates} }) {
		foreach my $well (1 .. $self->{_num_wells}) {
			my $row = int(($well - 1) / $self->{_max_plate_col}) + 1;
			my $col = int(($well - 1) % $self->{_max_plate_col}) + 1;
			my @data_refs = &convert_well($self,$plate_num,$well);
			foreach my $ref (@data_refs) {
				my ($array_row, $array_col, $meta_row, $meta_col,
					$sub_row, $sub_col) = @$ref;
				my $plate_str;
				if(length($plate_num) == 1) {
   	    	        $plate_str = "00" . $plate_num;
   	        	} elsif(length($plate_num) == 2) {
					$plate_str = "0" . $plate_num;
				} else {
					$plate_str = $plate_num;
				}
				if($w == 1) {
					if(length($well) == 1) {
						$well = "00" . $well;
					} elsif(length($well) == 2) {
						$well = "0" . $well;
					}
					print "$plate_str\t$well\t$array_row\t$array_col\n";
				} else {
					my $rowstr = substr("ABCDEFGHIJKLMNOP", $row - 1, 1);
					my $plate_col;
					if(length($col) == 1) {
						$plate_col = "0" . $col;
					} else {
						$plate_col = $col;
					}
					print "$plate_str\t$rowstr$plate_col\t$array_row\t"
						. "$array_col\n";
				}
			}
		}
	}
}

package SlideMap;
sub convert_well {
	my $self = $_[0];
	my @data = $self->{_convert_well}->(@_);
	return @data;
}

package SlideMap;
sub convert_spot {
	my $self = $_[0];
	my @data = $self->{_convert_spot}->(@_);
	return @data;
}

sub get_meta {
		my($self, $_array_row, $_array_col) = @_;

## get current 'meta' pin coordinates
	my $_meta_row = int(($_array_row - 1) / $self->{_yspacing})  + 1;
	my $_meta_col = int(($_array_col - 1) / $self->{_xspacing})  + 1;

## now find sub-grid coordinates
	my $_sub_row = $_array_row - (($_meta_row - 1) * $self->{_yspacing});
	my $_sub_col = $_array_col - (($_meta_col - 1) * $self->{_xspacing});

	return ($_meta_row,$_meta_col,$_sub_row,$_sub_col);
}

package SlideMap;
sub setFormat {
	my($self,$informat) = @_;
	if($informat == 1 || $informat == 2) {
		$self->{_format} = $informat;
		&initialize($self);
	} else {
		print "Format error: 1 = 96-well, 2 = 384-well\n";
	}
	return $self->{_format};
}

sub setPrintDirection {
	my($self,$dir) = @_;
	if($dir == 0 || $dir == 1) {
		$self->{_print_dir} = $dir;
	} else {
		print "Print Direction error: '0' => top->bottom, "
			. "'1' => left->right\n";
	}
	return $self->{_print_dir};
}
sub setNoComplement {
	my ($self,$nocomp) = @_;
	if($nocomp == 0 || $nocomp == 1) {
		$self->{_nocomplement} = $nocomp;
	} else {
		print "Complement error: '0' => complemented, "
			. "'1' => NOT complemented\n";
	}
	return $self->{_nocomplement};
}
sub setRepeatMode {
	my ($self,$mode) = @_;
	if($mode == 1) {
		$self->{_repeat} = $mode;
		if($self->{_machine} eq 'MD' || $self->{_machine} eq 'MD3') {
			$self->{_x_repeat} = 1;
			$self->{_y_repeat} = 1;
			$self->{_print_dir} = 0;
			if($self->{_machine} eq 'MD3') {
				$self->{_xspacing} = 32;
				$self->{_yspacing} = 12;
			} else {
				$self->{_xspacing} = 16;
				$self->{_yspacing} = 16;
			}
		}
	} elsif($mode == 0) {
		$self->{_repeat} = $mode;
		if($self->{_machine} eq 'MD' || $self->{_machine} eq 'MD3') {
			$self->{_x_repeat} = 2;
			$self->{_y_repeat} = 1;
			if($self->{_machine} eq 'MD3') {
				$self->{_print_dir} = 1;
			} else {
				$self->{_print_dir} = 0;
			}
		}
	} else {
		print "Repeat error: '0' => normal mode, '1' => repeat"
			. "mode\n";
	}
	return $self->{_repeat};
}
sub setRepeats {
	my ($self,$xrep,$yrep) = @_;
	if($xrep > 0 && $xrep < 5) {
		$self->{_x_repeat} = $xrep;
	} else {
		print "Repeat error: '1' => NO repeat, '2','3','4' "
			. "repeats in x dimension\n";
	}
	if($yrep > 0 && $yrep < 5) {
		$self->{_y_repeat} = $yrep;
	} else {
		print "Repeat error: '1' => NO repeat, '2','3','4' "
			. "repeats in y dimension\n";
	}
	return $self->{_x_repeat},$self->{_y_repeat};
}
sub setPlateOrder {
	my $self = shift;
	my $order_string = shift;
	my @tmp = split(/\W+/,$order_string);
	if($order_string eq '') {
		@{ $self->{_plates} } = (1 .. $self->{_num_plates});
	} else {
		@{ $self->{_plates} } = @tmp;
	}
	# re-initialize with flag = 1 so plate_order is not re-set
	&initialize($self,1);
	return $self->{_plates};
}
sub setPrintHead {
	my($self,$x,$y) = @_;
	if($x > 0 && $y > 0) {
		$self->{_x_pin} = int($x);
		$self->{_y_pin} = int($y);
		&initialize($self);
	} else {
		print "Print head dimensions must be non-zero integers.\n";
	}
	return $self->{_x_pin},$self->{_y_pin};
}

sub setBlockDimensions {
	my($self,$xs,$ys) = @_;
	if($xs > 0 && $ys > 0) {
		$self->{_xspacing} = int($xs);
		$self->{_yspacing} = int($ys);
		&initialize($self);
	} else {
		print "Block dimensions must be non-zero integers.\n";
	}
	return;
}

sub setMachine {
	my($self,$machine) = @_;

	$self->{_machine} = $machine;
	if($machine eq 'MD3') {
		$self->{_format} = 2;
		$self->{_print_dir} = 1;
		$self->{_x_repeat} = 2;
		$self->{_y_repeat} = 1;
		$self->{_xspacing} = 32;
		$self->{_x_pin} = 1;
		$self->{_y_pin} = 12;
		$self->{_nocomplement} = 1;
	} elsif($machine eq 'Lucidia') {
		$self->{_format} = 2;
		$self->{_print_dir} = 1;
		$self->{_x_repeat} = 1;
		$self->{_y_repeat} = 1;
		$self->{_nocomplement} = 0;
		$self->{_x_pin} = 2;
		$self->{_y_pin} = 12;
	} elsif($machine eq 'Stanford') {
		$self->{_format} = 2;
		$self->{_print_dir} = 0;
		$self->{_x_pin} = 4;
		$self->{_y_pin} = 4;
		$self->{_x_repeat} = 1;
		$self->{_y_repeat} = 1;
		$self->{_nocomplement} = 0;
	} elsif($machine eq 'MD') {
		$self->{_format} = 1;
		$self->{_print_dir} = 1;
		$self->{_x_repeat} = 2;
		$self->{_y_repeat} = 1;
		$self->{_yspacing} = 16;
		$self->{_x_pin} = 1;
		$self->{_y_pin} = 6;
		$self->{_nocomplement} = 1;
	} elsif($machine eq 'IAS') {
		$self->{_format} = 1;
		$self->{_print_dir} = 0;
		$self->{_x_repeat} = 1;
		$self->{_y_repeat} = 1;
		$self->{_nocomplement} = 0;
	} else {
		$self->{_format} = 1;
		$self->{_print_dir} = 0;
		$self->{_x_repeat} = 1;
		$self->{_y_repeat} = 1;
		$self->{_nocomplement} = 0;
	}
	$self->initialize;
}

sub getFormat { return $_[0]->{_format}; }
sub getPrintDirection { return $_[0]->{_print_dir}; }
sub getNoComplement { return $_[0]->{_nocomplement}; }
sub getRepeats { return $_[0]->{_x_repeat}, $_[0]->{_y_repeat}; }
sub getRepeatMode { return $_[0]->{_repeat}; }
sub getPrintHead { return $_[0]->{_x_pin}, $_[0]->{_y_pin}; }
sub getBlockDimensions { return $_[0]->{_xspacing},
		$_[0]->{_yspacing}; }
sub getMachine { return $_[0]->{_machine}; }
sub getPlateOrder { return $_[0]->{_plates}; }
sub getMap { return $_[0]->{_map}; }
sub getArrayDimensions { return $_[0]->{_max_row}, $_[0]->{_max_col}; }
sub getPitch { return $_[0]->{_x_pitch}, $_[0]->{_y_pitch}; }
sub getNumSpots { return $_[0]->{_num_spots}; }
sub showConvertWell { print "\nconvert_well:\n", &make_convert_well($_[0]); }
sub showConvertSpot { print "\nconvert_spot:\n", &make_convert_spot($_[0]); }

sub make_convert_spot {

	my $self = shift;
	my $code = '
	my($self, $_array_row, $_array_col) = @_;
	';

## A.	get current 'meta' pin coordinates

	$code .= '
	my $_meta_row = int(($_array_row - 1) / $self->{_yspacing})  + 1;
	my $_meta_col = int(($_array_col - 1) / $self->{_xspacing})  + 1;
	';

## B.	get current pin coordinates

	$code .= '
	my $_curr_ypin = int(($_meta_row - 1) / $self->{_y_repeat})  + 1;
	my $_curr_xpin = int(($_meta_col - 1) / $self->{_x_repeat})  + 1;
	';

## C.	now find sub-grid coordinates

	$code .= '
	my $_spot_row = $_array_row - (($_meta_row - 1) * $self->{_yspacing});
	my $_spot_col = $_array_col - (($_meta_col - 1) * $self->{_xspacing});
	';

	if($self->{_machine} eq 'Stanford') {
		$code .= '
	$_spot_col = ($self->{_xspacing} + 1 - $_spot_col);
		';
	}
	$code .= '
	my $_sub_row = $_spot_row;
	my $_sub_col = $_spot_col;
	';

## D.	calc. cummulative head-pass, i.e. number of times head prints on slide

	if($self->{_print_dir} == 1) {
		## MD3 style printing; left -> right
		$code .= '
	my $_cum_pass = (($_spot_row - 1) * $self->{_xspacing}) + $_spot_col;
		';
	} else {
		## default; IAS style printing; top -> bottom
		$code .= '
	my $_cum_pass = (($_spot_col - 1) * $self->{_yspacing}) + $_spot_row;
		';
	}
## get plate number, equivalent to ordinal
	$code .= '
	my $_plate_num = int(($_cum_pass - 1) / $self->{_pass_plate}) + 1;
	';
## calc. current pass number
	$code .= '
	my $_curr_pass = int(($_cum_pass - 1) % $self->{_pass_plate}) + 1;
	';
## now get x and y pass coordinates

	if($self->{_machine} eq 'Stanford') {
		$code .= '
	my $_x_pass = int(($_curr_pass - 1) / $self->{_max_ypass}) + 1;
	my $_y_pass = int(($_curr_pass - 1) % $self->{_max_ypass}) + 1;
		';
	} else {
		$code .= '
	my $_y_pass = int(($_curr_pass - 1) / $self->{_max_xpass}) + 1;
	my $_x_pass = int(($_curr_pass - 1) % $self->{_max_xpass}) + 1;
		';
	}

## E.	now get plate row and col coordinates

	if($self->{_machine} eq 'Lucidia' && $self->{_nocomplement} == 1) {
		$code .= '
	my $_plate_row = (($_x_pass - 1) % $self->{_paramA})
		* $self->{_paramA} + int(($_x_pass - 1) / $self->{_paramB})
		+ 2 * ($_curr_xpin) - 1;
		';
	} elsif($self->{_machine} eq 'Lucidia') {
		$code .= '
	my $_plate_row = (($_x_pass - 1) % $self->{_paramA})
		* $self->{_paramA} + int(($_x_pass - 1) / $self->{_paramB})
		+ 2 * (1 - $_curr_xpin + $self->{_x_pin}) - 1;
		';
	} elsif($self->{_nocomplement} == 1) {
		$code .= '
	my $_plate_row = (($_x_pass - 1) * $self->{_x_pin}) + $_curr_xpin;
		';
	} else {
		$code .= '
	my $_plate_row = (($_x_pass - 1) * $self->{_x_pin})
		+ (1 - $_curr_xpin + $self->{_x_pin});
		';
	}
	$code .= '
	my $_plate_col = (($_y_pass - 1) * $self->{_y_pin}) + $_curr_ypin;
	';

## F.	convert row, col coordinates to well number
	$code .= '
	my $_well = (($_plate_row - 1) * $self->{_max_plate_col}) + $_plate_col;
	return ($_plate_num, $_well, $_plate_row, $_plate_col);
	';

	return $code;
}


sub make_convert_well {

	my($self) = shift;

	my $code = '
	my($self, $_plate_num, $_well) = @_;
	';

## convert well number to row, col

	$code .= '
	my $_row = int(($_well - 1) / $self->{_max_plate_col}) + 1;
	my $_col = int(($_well - 1) % $self->{_max_plate_col}) + 1;
	';

## get current pin coordinates

	if($self->{_machine} eq 'Lucidia') {
		$code .= '
	my $_curr_xpin = $self->{_x_pin} - (int(($_row - 1)/2) % $self->{_x_pin});
		';
	} elsif($self->{_nocomplement} == 1) {
		$code .= '
	my $_curr_xpin = (($_row - 1) % $self->{_x_pin}) + 1;
		';
	} else {
		$code .= '
	my $_curr_xpin = $self->{_x_pin} - (($_row - 1) % $self->{_x_pin});
		';
	}
	$code .= '
	my $_curr_ypin = (($_col - 1) % $self->{_y_pin}) + 1;
	';

## get pass numbers

	if($self->{_machine} eq 'Lucidia') {
		$code .= '
	my $_xpass = ((($_row - 1) % 2) * $self->{_paramA})
		+ int(($_row - 1) / $self->{_paramB}) + 1;
		';
	} else {
		$code .= '
	my $_xpass = int(($_row - 1) / $self->{_x_pin}) + 1;
		';
	}
	$code .= '
	my $_ypass = int(($_col - 1) / $self->{_y_pin}) + 1;
	';

## get cummulative print-head pass on plate

	if($self->{_machine} eq 'Stanford') {
	$code .= '
	my $_cum_pass = (($_plate_num - 1) * $self->{_pass_plate})
		+ (($_xpass - 1) * $self->{_max_ypass}) + $_ypass;
	';
	} else {
	$code .= '
	my $_cum_pass = (($_plate_num - 1) * $self->{_pass_plate})
		+ (($_ypass - 1) * $self->{_max_xpass}) + $_xpass;
	';
	}

## calc. sub-grid coordinates

	if($self->{_print_dir} == 1) {
		$code .= '
	my $_spot_row = int(($_cum_pass - 1) / $self->{_xspacing}) + 1;
	my $_spot_col = int(($_cum_pass - 1) % $self->{_xspacing}) + 1;
		';
	} else {
		$code .= '
	my $_spot_row = int(($_cum_pass - 1) % $self->{_yspacing}) + 1;
	my $_spot_col = int(($_cum_pass - 1) / $self->{_yspacing}) + 1;
		';
	}
	if($self->{_machine} eq 'Stanford') {
		$code .= '
	$_spot_col = ($self->{_xspacing} + 1 - $_spot_col);
		';
	}
	$code .= '
	my $_sub_row = $_spot_row;
	my $_sub_col = $_spot_col;
	';

## calc. array coordinates
## now handle the repeats and return a list of references to the data

	$code .= '
	my($_array_row,$_array_col,$_meta_row,$_meta_col);
	my @data;
	for my $j (1 .. $self->{_y_repeat}) {
		$_meta_row = $j + ($_curr_ypin - 1) * $self->{_y_repeat};
		$_array_row = $_spot_row + ($_meta_row - 1) * $self->{_yspacing};
		for my $i (1 .. $self->{_x_repeat}) {
			$_meta_col = $i + ($_curr_xpin - 1) * $self->{_x_repeat};
			$_array_col = $_spot_col + ($_meta_col - 1) * $self->{_xspacing};
			push @data, [ $_array_row, $_array_col, $_meta_row, $_meta_col,
				$_sub_row, $_sub_col ];
		}
	}
	return @data;
	';

	return $code;
}

1;
__END__