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List:       kde-commits
Subject:    www/areas/accessibility
From:       Olaf Schmidt <ojschmidt () kde ! org>
Date:       2006-07-24 17:34:54
Message-ID: 1153762494.993947.26871.nullmailer () svn ! kde ! org
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SVN commit 565876 by ojschmidt:

Repair hue function

 M  +18 -16    oxygen.php  


--- trunk/www/areas/accessibility/oxygen.php #565875:565876
@@ -88,33 +88,35 @@
     $min = min ($color ["redL"], $color ["greenL"], $color ["blueL"]);
     $med = $color ["redL"] + $color ["greenL"] + $color ["blueL"] - $max - $min;
 
-    $hue = ($med - $min) / ($max - $min);
-
     if ($max == $min) {
        $color ["hue"] = "-";
        $color ["saturation"] = 0;
     }
     else {
+      $hue = ($med - $min) / ($max - $min);
+      if ($med == $color ["redL"]) {
+        $factor = 0.2126 * $hue;
+        $hue = -$hue;
+      } elseif ($med == $color ["greenL"]) {
+        $factor = 0.7152 * $hue;
+      } else {
+        $factor = 0.0722 * $hue;
+      }
+
       if ($max == $color ["redL"]) {
-        $factor = 0.2126;
+        if ($hue < 0)  $hue += 6;
+        $factor += 0.2126;
       } elseif ($max == $color ["greenL"]) {
-        $color ["hue"] += $hue + 1/3;
-        $factor = 0.7152;
+        $hue += 2;
+        $factor += 0.7152;
       } else {
-        $color ["hue"] += 2/3;
-        $factor = 0.0722;
+        $hue += 4;
+        $factor += 0.0722;
       }
 
-      if ($med == $color ["redL"]) {
-        $factor += 0.2126 * $hue;
-      } elseif ($med == $color ["greenL"]) {
-        $factor += 0.7152 * $hue;
-      } else {
-        $factor += 0.0722 * $hue;
-      }
+      $color ["hue"] = $hue/6;
+      $color ["saturation"] = max (($max-$min)*$factor/$color ["luminosity"], \
($max-$min)*($factor-1)/($color ["luminosity"]-1));  }
-
-    $color ["saturation"] = max (($max-$min)*$factor/$color ["luminosity"], \
($max-$min)*($factor-1)/($color ["luminosity"]-1));  }
 
 function printTableLine (const $colors, const $color, const $name, const $tablename) \
{


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