Add ColorHSL and ColorYUV.

1 files changed, 110 insertions, 0 deletions

diff --git a/dmagick/ColorHSL.d b/dmagick/ColorHSL.d
new file mode 100644
index 0000000..cedbd99
--- /dev/null
+++ b/dmagick/ColorHSL.d
@@ -0,0 +1,110 @@
+/**
+ * Copyright: Mike Wey 2011
+ * License:   zlib (See accompanying LICENSE file)
+ * Authors:   Mike Wey
+ */
+
+module dmagick.ColorHSL;
+
+import dmagick.Color;
+
+import dmagick.c.gem;
+import dmagick.c.magickType;
+import dmagick.c.quantum;
+
+/**
+ * The HSL color model describes a color by using the three color components
+ * hue (H), saturation (S) and luminance (L). This color format is very
+ * popular for designing and editing (e.g. within graphics design tools)
+ * because it gives the user a good impression about the resulting color
+ * for a certain color value: Hue defines the pure color tone out of the
+ * color spectrum, saturation defines the mixture of the color tone with
+ * gray and finally luminance defines the lightness of the resulting color.
+ */
+class ColorHSL : Color
+{
+	this()
+	{
+		super();
+	}
+
+	/**
+	 * Create a Color from the specified doubles.
+	 */
+	this(double hue, double saturation, double luminance, double opacity = 0)
+	{
+		Quantum red, green, blue;
+
+		 ConvertHSLToRGB(hue, saturation, luminance, &red, &green, &blue);
+
+		super(red, green, blue, scaleDoubleToQuantum(opacity));
+	}
+
+	/**
+	 * Create a Color from a X11 color specification string
+	 */
+	this(string color)
+	{
+		super(color);
+	}
+
+	/**
+	 * The value for hue as a an angle between 0 and 360 degrees.
+	 */
+	void hue(double hue)
+	{
+		double oldHue, saturation, luminance;
+
+		ConvertRGBToHSL(pixelPacket.red, pixelPacket.green, pixelPacket.blue, &oldHue, &saturation, &luminance);
+		ConvertHSLToRGB(hue, saturation, luminance, &(pixelPacket.red), &(pixelPacket.green), &(pixelPacket.blue));
+	}
+	///ditto
+	double hue()
+	{
+		double hue, saturation, luminance;
+
+		ConvertRGBToHSL(pixelPacket.red, pixelPacket.green, pixelPacket.blue, &hue, &saturation, &luminance);
+
+		return hue;
+	}
+
+	/**
+	 * The value the saturation as a double in the range [0.0 .. 1.0]
+	 */
+	void saturation(double saturation)
+	{
+		double hue, oldSaturation, luminance;
+
+		ConvertRGBToHSL(pixelPacket.red, pixelPacket.green, pixelPacket.blue, &hue, &oldSaturation, &luminance);
+		ConvertHSLToRGB(hue, saturation, luminance, &(pixelPacket.red), &(pixelPacket.green), &(pixelPacket.blue));
+	}
+	///ditto
+	double saturation()
+	{
+		double hue, saturation, luminance;
+
+		ConvertRGBToHSL(pixelPacket.red, pixelPacket.green, pixelPacket.blue, &hue, &saturation, &luminance);
+
+		return saturation;
+	}
+
+	/**
+	 * The value for the luminance as a double in the range [0.0 .. 1.0]
+	 */
+	void luminance(double luminance)
+	{
+		double hue, saturation, oldLuminance;
+
+		ConvertRGBToHSL(pixelPacket.red, pixelPacket.green, pixelPacket.blue, &hue, &saturation, &oldLuminance);
+		ConvertHSLToRGB(hue, saturation, luminance, &(pixelPacket.red), &(pixelPacket.green), &(pixelPacket.blue));
+	}
+	///ditto
+	double luminance()
+	{
+		double hue, saturation, luminance;
+
+		ConvertRGBToHSL(pixelPacket.red, pixelPacket.green, pixelPacket.blue, &hue, &saturation, &luminance);
+
+		return luminance;
+	}
+}