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  • Committer: Bazaar Package Importer
  • Author(s): Ari Pollak
  • Date: 2009-08-14 09:57:17 UTC
  • mto: (1.1.21 upstream) (0.1.5 squeeze)
  • mto: This revision was merged to the branch mainline in revision 48.
  • Revision ID: james.westby@ubuntu.com-20090814095717-37dh2xqy5t0rurpk
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devel-docs/libgimpcolor/html/libgimpcolor-GimpColorSpace.html
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<title>GimpColorSpace</title>
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<meta name="generator" content="DocBook XSL Stylesheets V1.73.2">
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<link rel="start" href="index.html" title="GIMP Color Library Reference Manual">
 
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<meta name="generator" content="DocBook XSL Stylesheets V1.75.2">
 
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<link rel="home" href="index.html" title="GIMP Color Library Reference Manual">
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<link rel="up" href="libgimpcolor.html" title="Part I. GIMP Color Library">
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<link rel="prev" href="libgimpcolor-GimpCMYK.html" title="GimpCMYK">
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<meta name="generator" content="GTK-Doc V1.11 (XML mode)">
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<link rel="stylesheet" href="style.css" type="text/css">
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<link rel="part" href="libgimpcolor.html" title="Part I. GIMP Color Library">
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<link rel="index" href="libgimpcolor-index.html" title="Index">
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<th width="100%" align="center">GIMP Color Library Reference Manual</th>
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<td><a accesskey="n" href="libgimpcolor-GimpColorManaged.html"><img src="right.png" width="24" height="24" border="0" alt="Next"></a></td>
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</tr>
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<tr><td colspan="5" class="shortcuts"><nobr><a href="#libgimpcolor-GimpColorSpace.synopsis" class="shortcut">Top</a>
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                   | 
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                  <a href="#libgimpcolor-GimpColorSpace.description" class="shortcut">Description</a></nobr></td></tr>
 
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<tr><td colspan="5" class="shortcuts">
 
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<a href="#libgimpcolor-GimpColorSpace.synopsis" class="shortcut">Top</a>
 
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                 | 
 
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                <a href="#libgimpcolor-GimpColorSpace.description" class="shortcut">Description</a>
 
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</td></tr>
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</table>
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<div class="refentry" lang="en">
 
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<div class="refentry" title="GimpColorSpace">
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<a name="libgimpcolor-GimpColorSpace"></a><div class="titlepage"></div>
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<td valign="top" align="right"></td>
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<div class="refsynopsisdiv">
 
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<div class="refsynopsisdiv" title="Synopsis">
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<a name="libgimpcolor-GimpColorSpace.synopsis"></a><h2>Synopsis</h2>
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<pre class="synopsis">
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void                <a class="link" href="libgimpcolor-GimpColorSpace.html#gimp-rgb-to-hsv" title="gimp_rgb_to_hsv ()">gimp_rgb_to_hsv</a>                     (const <a class="link" href="libgimpcolor-GimpRGB.html#GimpRGB" title="GimpRGB">GimpRGB</a> *rgb,
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>gdouble</a> value);
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</pre>
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</div>
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<div class="refsect1" lang="en">
 
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<div class="refsect1" title="Description">
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<a name="libgimpcolor-GimpColorSpace.description"></a><h2>Description</h2>
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<p>
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When programming pixel data manipulation functions you will often use
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different color spaces.
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</p>
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</div>
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<div class="refsect1" lang="en">
 
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<div class="refsect1" title="Details">
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<a name="libgimpcolor-GimpColorSpace.details"></a><h2>Details</h2>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_rgb_to_hsv ()">
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<a name="gimp-rgb-to-hsv"></a><h3>gimp_rgb_to_hsv ()</h3>
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<pre class="programlisting">void                gimp_rgb_to_hsv                     (const <a class="link" href="libgimpcolor-GimpRGB.html#GimpRGB" title="GimpRGB">GimpRGB</a> *rgb,
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                                                         <a class="link" href="libgimpcolor-GimpHSV.html#GimpHSV" title="GimpHSV">GimpHSV</a> *hsv);</pre>
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Does a conversion from RGB to HSV (Hue, Saturation,
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Value) colorspace.</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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</table></div>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_rgb_to_hsl ()">
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<a name="gimp-rgb-to-hsl"></a><h3>gimp_rgb_to_hsl ()</h3>
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<pre class="programlisting">void                gimp_rgb_to_hsl                     (const <a class="link" href="libgimpcolor-GimpRGB.html#GimpRGB" title="GimpRGB">GimpRGB</a> *rgb,
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                                                         <a class="link" href="libgimpcolor-GimpHSV.html#GimpHSL" title="GimpHSL">GimpHSL</a> *hsl);</pre>
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Convert an RGB color value to a HSL (Hue, Saturation, Lightness)
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color value.</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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</table></div>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_rgb_to_cmyk ()">
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<a name="gimp-rgb-to-cmyk"></a><h3>gimp_rgb_to_cmyk ()</h3>
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<pre class="programlisting">void                gimp_rgb_to_cmyk                    (const <a class="link" href="libgimpcolor-GimpRGB.html#GimpRGB" title="GimpRGB">GimpRGB</a> *rgb,
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                                                         <a
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parameter. A <em class="parameter"><code>pullout</code></em> value of 0 makes this a conversion to CMY.
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A value of 1 causes the maximum amount of black to be pulled out.</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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</table></div>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_hsv_to_rgb ()">
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<a name="gimp-hsv-to-rgb"></a><h3>gimp_hsv_to_rgb ()</h3>
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<pre class="programlisting">void                gimp_hsv_to_rgb                     (const <a class="link" href="libgimpcolor-GimpHSV.html#GimpHSV" title="GimpHSV">GimpHSV</a> *hsv,
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                                                         <a class="link" href="libgimpcolor-GimpRGB.html#GimpRGB" title="GimpRGB">GimpRGB</a> *rgb);</pre>
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<p>
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Converts a color value from HSV to RGB colorspace</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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</table></div>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_hsl_to_rgb ()">
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<a name="gimp-hsl-to-rgb"></a><h3>gimp_hsl_to_rgb ()</h3>
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<pre class="programlisting">void                gimp_hsl_to_rgb                     (const <a class="link" href="libgimpcolor-GimpHSV.html#GimpHSL" title="GimpHSL">GimpHSL</a> *hsl,
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                                                         <a class="link" href="libgimpcolor-GimpRGB.html#GimpRGB" title="GimpRGB">GimpRGB</a> *rgb);</pre>
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<p>
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Convert a HSL color value to an RGB color value.</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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</table></div>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_cmyk_to_rgb ()">
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<a name="gimp-cmyk-to-rgb"></a><h3>gimp_cmyk_to_rgb ()</h3>
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<pre class="programlisting">void                gimp_cmyk_to_rgb                    (const <a class="link" href="libgimpcolor-GimpCMYK.html#GimpCMYK" title="GimpCMYK">GimpCMYK</a> *cmyk,
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                                                         <a class="link" href="libgimpcolor-GimpRGB.html#GimpRGB" title="GimpRGB">GimpRGB</a> *rgb);</pre>
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Does a simple transformation from the CMYK colorspace to the RGB
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colorspace, without taking color profiles into account.</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_rgb_to_hwb ()">
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<a name="gimp-rgb-to-hwb"></a><h3>gimp_rgb_to_hwb ()</h3>
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<pre class="programlisting">void                gimp_rgb_to_hwb                     (const <a class="link" href="libgimpcolor-GimpRGB.html#GimpRGB" title="GimpRGB">GimpRGB</a> *rgb,
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                                                         <a
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range [0, 1] and H is returned in the range [0, 6]. If W == 1 - B, H is
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undefined.</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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</table></div>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_hwb_to_rgb ()">
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<a name="gimp-hwb-to-rgb"></a><h3>gimp_hwb_to_rgb ()</h3>
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<pre class="programlisting">void                gimp_hwb_to_rgb                     (<a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gdouble"
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H is defined in the range [0, 6] or UNDEFINED, B and W are both in the
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range [0, 1]. The returned RGB values are all in the range [0, 1].</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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</table></div>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_rgb_to_hsv_int ()">
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<a name="gimp-rgb-to-hsv-int"></a><h3>gimp_rgb_to_hsv_int ()</h3>
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<pre class="programlisting">void                gimp_rgb_to_hsv_int                 (<a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"
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corresponding, with the returned values in the following
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ranges: H [0, 359], S [0, 255], V [0, 255].</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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</table></div>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_hsv_to_rgb_int ()">
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<a name="gimp-hsv-to-rgb-int"></a><h3>gimp_hsv_to_rgb_int ()</h3>
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<pre class="programlisting">void                gimp_hsv_to_rgb_int                 (<a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"
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The function changes the arguments to point to the RGB value
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corresponding, with the returned values all in the range [0, 255].</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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</table></div>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_rgb_to_hsl_int ()">
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<a name="gimp-rgb-to-hsl-int"></a><h3>gimp_rgb_to_hsl_int ()</h3>
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<pre class="programlisting">void                gimp_rgb_to_hsl_int                 (<a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"
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value with the values pointed to in the following ranges:  H [0, 360],
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L [0, 255], S [0, 255].</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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</table></div>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_rgb_to_cmyk_int ()">
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<a name="gimp-rgb-to-cmyk-int"></a><h3>gimp_rgb_to_cmyk_int ()</h3>
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<pre class="programlisting">void                gimp_rgb_to_cmyk_int                (<a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"
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parameter. A <em class="parameter"><code>pullout</code></em> value of 0 makes this a conversion to CMY.
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A value of 100 causes the maximum amount of black to be pulled out.</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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</table></div>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_cmyk_to_rgb_int ()">
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<a name="gimp-cmyk-to-rgb-int"></a><h3>gimp_cmyk_to_rgb_int ()</h3>
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<pre class="programlisting">void                gimp_cmyk_to_rgb_int                (<a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"
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Does a naive conversion from CMYK to RGB colorspace. A simple
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formula that doesn't take any color-profiles into account is used.</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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</table></div>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_rgb_to_l_int ()">
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<a name="gimp-rgb-to-l-int"></a><h3>gimp_rgb_to_l_int ()</h3>
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<pre class="programlisting"><a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"
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Calculates the lightness value of an RGB triplet with the formula
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L = (max(R, G, B) + min (R, G, B)) / 2</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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</table></div>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_hsl_to_rgb_int ()">
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<a name="gimp-hsl-to-rgb-int"></a><h3>gimp_hsl_to_rgb_int ()</h3>
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<pre class="programlisting">void                gimp_hsl_to_rgb_int                 (<a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"
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The function changes the arguments to point to the RGB value
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corresponding, with the returned values all in the range [0, 255].</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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</table></div>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_rgb_to_hsv4 ()">
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<a name="gimp-rgb-to-hsv4"></a><h3>gimp_rgb_to_hsv4 ()</h3>
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<pre class="programlisting">void                gimp_rgb_to_hsv4                    (const <a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guchar"
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<p>
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</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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</table></div>
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</div>
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<hr>
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<div class="refsect2" lang="en">
 
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<div class="refsect2" title="gimp_hsv_to_rgb4 ()">
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<a name="gimp-hsv-to-rgb4"></a><h3>gimp_hsv_to_rgb4 ()</h3>
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<pre class="programlisting">void                gimp_hsv_to_rgb4                    (<a
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href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guchar"
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<p>
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</p>
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<p>
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</p>
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<div class="variablelist"><table border="0">
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<col align="left" valign="top">
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