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Color.pm: added xyY2rgb and xyY2hex

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git-svn-id: https://svn.fhem.de/fhem/trunk@18476 2b470e98-0d58-463d-a4d8-8e2adae1ed80
This commit is contained in:
justme-1968 2019-02-01 12:35:40 +00:00
parent f5b39699a9
commit 4904e51e65
1 changed files with 66 additions and 0 deletions
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66
fhem/FHEM/Color.pm
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@ -6,7 +6,9 @@ package main;
use strict;
use warnings;
use vars qw(%defs);
use vars qw($FW_ME);
sub Log3($$$);
sub
Color_Initialize()
@ -361,6 +363,70 @@ ct2rgb($)
}
# COLOR SPACE: xyY & RGB(dec)
# xyY > h=float(0, 1), s=float(0, 1), v=float(0, 1)
# RGB > r=float(0, 1), g=float(0, 1), b=float(0, 1)
#
sub
xyY2rgb($$$)
{
# calculation from http://www.brucelindbloom.com/index.html
my ($x,$y,$Y) = @_;
#Log 3, "xyY:". $x . " " . $y ." ". $Y;
my $r = 0;
my $g = 0;
my $b = 0;
if( $y > 0 ) {
my $X = $x * $Y / $y;
my $Z = (1 - $x - $y)*$Y / $y;
if( $X > 1
|| $Y > 1
|| $Z > 1 ) {
my $f = maxNum($X,$Y,$Z);
$X /= $f;
$Y /= $f;
$Z /= $f;
}
#Log 3, "XYZ: ". $X . " " . $Y ." ". $Y;
$r = 0.7982 * $X + 0.3389 * $Y - 0.1371 * $Z;
$g = -0.5918 * $X + 1.5512 * $Y + 0.0406 * $Z;
$b = 0.0008 * $X + 0.0239 * $Y + 0.9753 * $Z;
if( $r > 1
|| $g > 1
|| $b > 1 ) {
my $f = main::maxNum($r,$g,$b);
$r /= $f;
$g /= $f;
$b /= $f;
}
#Log 3, "rgb: ". $r . " " . $g ." ". $b;
#$r *= 255;
#$g *= 255;
#$b *= 255;
}
return( $r, $g, $b );
}
# COLOR SPACE: xyY & RGB(hex)
# xyY > h=float(0, 1), s=float(0, 1), v=float(0, 1)
# RGB > r=hex(00, FF), g=hex(00, FF), b=hex(00, FF)
sub
xyY2hex($$$) {
my ($x,$y,$Y) = @_;
my ($r,$g,$b) = Color::xyY2rgb( $x, $y, $Y );
return Color::rgb2hex( $r*255, $g*255, $b*255 );
}
sub
devStateIcon($$@)
{