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# OKHWB color space, Conveter under Copyright (c) 2021 Björn Ottosson, see LICENSE.OK |
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package Graphics::Toolkit::Color::Space::Instance::OKHWB; |
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261811
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use v5.12; |
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use warnings; |
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709
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use Graphics::Toolkit::Color::Space; |
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3134
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sub from_hwb { |
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my ($hwb) = shift; |
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my $v = 1 - $hwb->[2]; |
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my $s = ($v < 0.000000001) ? 0 : (1 - ($hwb->[1] / $v)); |
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return [$hwb->[0], $s, $v]; |
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} |
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sub to_hwb { |
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my ($hsv) = shift; |
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my $w = (1 - $hsv->[1]) * $hsv->[2]; |
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my $b = 1 - $hsv->[2]; |
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return [$hsv->[0], $w, $b]; |
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} |
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Graphics::Toolkit::Color::Space->new( |
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name => 'OKHWB', |
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family => 'HWB', |
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axis => [qw/hue whiteness blackness/], |
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type => [qw/angular linear linear/], |
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range => [360, 1, 1], |
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precision => 5, |
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convert => {OKHSV => [\&from_hwb, \&to_hwb]}, |
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); |