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package RGB;
use strict;
sub new
{
my ($class, $input) = @_;
my $self = {};
$self->{RGB} = [];
bless($self);
$self->init($input);
return $self;
}
sub init
{
my ($self, $input) = @_;
if ($input =~ /^\#/)
{ $self->hex($input); }
else
{ $self->rgb($input); }
}
sub hex
{
my ($self, $hex) = @_;
if ($hex)
{
$self->{RGB} = hex_to_rgb($hex);
}
return rgb_to_hex($self->{RGB});
}
sub rgb
{
my ($self, $rgb) = @_;
if (ref($rgb) eq "ARRAY")
{
$self->{RGB} = $rgb;
}
return $self->{RGB};
}
sub hex_to_rgb
{
my ($hex) = @_;
$hex =~ s/^\#//;
my ($r, $g, $b);
if (length($hex) == 6)
{
$r = hex(substr($hex, 0, 2));
$g = hex(substr($hex, 2, 2));
$b = hex(substr($hex, 4, 2));
}
elsif (length($hex) == 3)
{
$r = hex(substr($hex, 0, 1) x 2);
$g = hex(substr($hex, 1, 1) x 2);
$b = hex(substr($hex, 2, 1) x 2);
}
return [$r, $g, $b];
}
sub rgb_to_hex
{
my ($rgb) = @_;
for (my $i = 0; $i < 3; $i++)
{
$rgb->[$i] = 255 if $rgb->[$i] > 255;
$rgb->[$i] = 0 if $rgb->[$i] < 0;
}
return sprintf ("#%02X%02X%02X", @{$rgb});
}
sub display_rgb
{
my ($self) = @_;
my $out = join ", ", map {int $_} @{ $self->{RGB} };
$out = "rgb(".$out.")";
return $out;
}
sub display_hex
{
my ($self) = @_;
return $self->hex();
}
sub add
{
my ($self, $fuzz) = @_;
$fuzz = parse_fuzz($fuzz);
for (my $i = 0; $i < 3; $i++)
{ $self->{RGB}->[$i] += $fuzz->[$i]; }
}
sub mollify
{
my ($self, $fuzz) = @_;
$fuzz = parse_fuzz($fuzz);
for (my $i = 0; $i < 3; $i++)
{
my $offset = int( rand($fuzz->[$i] + 1) );
$self->{RGB}->[$i] += $offset;
}
}
sub perturb
{
my ($self, $fuzz) = @_;
$fuzz = parse_fuzz($fuzz);
for (my $i = 0; $i < 3; $i++)
{
my $offset = int( rand($fuzz->[$i] + 1) - ( $fuzz->[$i] / 2 ) );
$self->{RGB}->[$i] += $offset;
}
}
sub parse_fuzz
{
my ($fuzz) = @_;
if (ref($fuzz) eq "RGB")
{ $fuzz = $fuzz->rgb(); }
elsif (ref($fuzz) eq "ARRAY")
{ }
else
{ $fuzz = [$fuzz, $fuzz, $fuzz]; }
return $fuzz;
}
sub clip
{
my ($self) = @_;
for (my $i = 0; $i < 3; $i++)
{
$self->{RGB}->[$i] = 255 if $self->{RGB}->[$i] > 255;
$self->{RGB}->[$i] = 0 if $self->{RGB}->[$i] < 0;
}
}
sub rgb_map
{
my ($self, $func, $a, $b) = @_;
my ($ra) = $a->rgb();
my ($rb) = $b->rgb();
my (@rgb) = map { &{$func}($ra->[$_], $rb->[$_]) } 0,1,2;
return RGB->new(\@rgb);
}
1;
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