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# /=====================================================================\ #
# | LaTeXML::Common::Color::Derived | #
# | A representation of colors in color models derived from core | #
# |=====================================================================| #
# | Part of LaTeXML: | #
# | Public domain software, produced as part of work done by the | #
# | United States Government & not subject to copyright in the US. | #
# |---------------------------------------------------------------------| #
# | Bruce Miller <bruce.miller@nist.gov> #_# | #
# | http://dlmf.nist.gov/LaTeXML/ (o o) | #
# \=========================================================ooo==U==ooo=/ #
package LaTeXML::Common::Color::Derived;
use strict;
use warnings;
use LaTeXML::Common::Color;
use base qw(LaTeXML::Common::Color);
use LaTeXML::Global;
use LaTeXML::Common::Error;
# Convert this derived color to one of the Core colors
# Subclasses of this color need to set the variable:
# derived_color_model_<name> => [$coremodel, &convertto($self), &convertfrom($core) ]
# $coremodel is the core model class name associated with this color model
# &convertto($self) converts an instance of the derived model to the core color
# &convertfrom($core) converts an instance od the core model to the derived color
sub toCore {
my ($self) = @_;
my $model = $$self[0];
if (my $data = $STATE->lookupValue('derived_color_model_' . $model)) {
my $convertto = $$data[1];
return &{$convertto}($self); }
else {
Error('unexpected', $self->model, undef, "Color is not in valid model '$model'");
return Black; } }
sub rgb { my ($self) = @_; return $self->convert('rgb'); }
sub cmy { my ($self) = @_; return $self->convert('cmy'); }
sub cmyk { my ($self) = @_; return $self->convert('cmyk'); }
sub hsb { my ($self) = @_; return $self->convert('hsb'); }
sub gray { my ($self) = @_; return $self->convert('gray'); }
#======================================================================
1;
__END__
=head1 NAME
C<LaTeXML::Common::Color::Derived> - represents colors in derived color models
=head1 SYNOPSIS
C<LaTeXML::Common::Color::Derived> represents colors in derived color models.
These are used to support various color models defined and definable via
the C<xcolor> package, such as colors where the components are in different ranges.
It extends L<LaTeXML::Common::Color>.
=head1 AUTHOR
Bruce Miller <bruce.miller@nist.gov>
=head1 COPYRIGHT
Public domain software, produced as part of work done by the
United States Government & not subject to copyright in the US.
=cut
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