From 97902f4d7de3482cf110950544cc4a186dd84b11 Mon Sep 17 00:00:00 2001
From: Kore Nordmann <github@kore-nordmann.de>
Date: Wed, 2 Aug 2006 14:07:19 +0000
Subject: - Added basic 3d renderer   # Several unresolved rendering issues -
 Fixed filled line charts in 2d renderer

---
 src/structs/color.php | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

(limited to 'src/structs')

diff --git a/src/structs/color.php b/src/structs/color.php
index a65dc31..99d9fde 100644
--- a/src/structs/color.php
+++ b/src/structs/color.php
@@ -203,10 +203,26 @@ class ezcGraphColor
     }
 
     /**
-     * Darkens the color
+     * Returns a copy of the current color made more transparent by the given
+     * factor
+     * 
+     * @param mixed $value  Percent to make color mor transparent
+     * @return ezcGraphColor New color
+     */
+    public function transparent( $value )
+    {
+        $color = clone $this;
+
+        $color->alpha = 255 - (int) round( ( 255 - $this->alpha ) * ( 1 - $value ) );
+
+        return $color;
+    }
+
+    /**
+     * Returns a copy of the current color darkened by the given factor
      * 
      * @param float $value Percent to darken the color
-     * @return void
+     * @return ezcGraphColor New color
      */
     public function darken( $value )
     {
-- 
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