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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Gwyddion Drawing Library Reference Manual: GwyGLMaterial</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
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                   | 
                  <a href="#GwyGLMaterial.description" class="shortcut">Description</a>
                   | 
                  <a href="#GwyGLMaterial.object-hierarchy" class="shortcut">Object Hierarchy</a>
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<div class="refentry">
<a name="GwyGLMaterial"></a><div class="titlepage"></div>
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<td valign="top">
<h2><span class="refentrytitle"><a name="GwyGLMaterial.top_of_page"></a>GwyGLMaterial</span></h2>
<p>GwyGLMaterial — OpenGL material representation</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<a name="GwyGLMaterial.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">
#include &lt;libdraw/gwydraw.h&gt;

struct              <a class="link" href="GwyGLMaterial.html#GwyGLMaterial-struct" title="struct GwyGLMaterial">GwyGLMaterial</a>;
struct              <a class="link" href="GwyGLMaterial.html#GwyGLMaterialClass" title="struct GwyGLMaterialClass">GwyGLMaterialClass</a>;
#define             <a class="link" href="GwyGLMaterial.html#GWY-GL-MATERIAL-DEFAULT:CAPS" title="GWY_GL_MATERIAL_DEFAULT">GWY_GL_MATERIAL_DEFAULT</a>
#define             <a class="link" href="GwyGLMaterial.html#GWY-GL-MATERIAL-NONE:CAPS" title="GWY_GL_MATERIAL_NONE">GWY_GL_MATERIAL_NONE</a>
const <a class="link" href="libgwydraw-GwyRGBA.html#GwyRGBA" title="GwyRGBA"><span class="returnvalue">GwyRGBA</span></a> *     <a class="link" href="GwyGLMaterial.html#gwy-gl-material-get-ambient" title="gwy_gl_material_get_ambient ()">gwy_gl_material_get_ambient</a>         (<em class="parameter"><code><a class="link" href="GwyGLMaterial.html" title="GwyGLMaterial"><span class="type">GwyGLMaterial</span></a> *gl_material</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="GwyGLMaterial.html#gwy-gl-material-set-ambient" title="gwy_gl_material_set_ambient ()">gwy_gl_material_set_ambient</a>         (<em class="parameter"><code><a class="link" href="GwyGLMaterial.html" title="GwyGLMaterial"><span class="type">GwyGLMaterial</span></a> *gl_material</code></em>,
                                                         <em class="parameter"><code>const <a class="link" href="libgwydraw-GwyRGBA.html#GwyRGBA" title="GwyRGBA"><span class="type">GwyRGBA</span></a> *ambient</code></em>);
const <a class="link" href="libgwydraw-GwyRGBA.html#GwyRGBA" title="GwyRGBA"><span class="returnvalue">GwyRGBA</span></a> *     <a class="link" href="GwyGLMaterial.html#gwy-gl-material-get-diffuse" title="gwy_gl_material_get_diffuse ()">gwy_gl_material_get_diffuse</a>         (<em class="parameter"><code><a class="link" href="GwyGLMaterial.html" title="GwyGLMaterial"><span class="type">GwyGLMaterial</span></a> *gl_material</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="GwyGLMaterial.html#gwy-gl-material-set-diffuse" title="gwy_gl_material_set_diffuse ()">gwy_gl_material_set_diffuse</a>         (<em class="parameter"><code><a class="link" href="GwyGLMaterial.html" title="GwyGLMaterial"><span class="type">GwyGLMaterial</span></a> *gl_material</code></em>,
                                                         <em class="parameter"><code>const <a class="link" href="libgwydraw-GwyRGBA.html#GwyRGBA" title="GwyRGBA"><span class="type">GwyRGBA</span></a> *diffuse</code></em>);
const <a class="link" href="libgwydraw-GwyRGBA.html#GwyRGBA" title="GwyRGBA"><span class="returnvalue">GwyRGBA</span></a> *     <a class="link" href="GwyGLMaterial.html#gwy-gl-material-get-specular" title="gwy_gl_material_get_specular ()">gwy_gl_material_get_specular</a>        (<em class="parameter"><code><a class="link" href="GwyGLMaterial.html" title="GwyGLMaterial"><span class="type">GwyGLMaterial</span></a> *gl_material</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="GwyGLMaterial.html#gwy-gl-material-set-specular" title="gwy_gl_material_set_specular ()">gwy_gl_material_set_specular</a>        (<em class="parameter"><code><a class="link" href="GwyGLMaterial.html" title="GwyGLMaterial"><span class="type">GwyGLMaterial</span></a> *gl_material</code></em>,
                                                         <em class="parameter"><code>const <a class="link" href="libgwydraw-GwyRGBA.html#GwyRGBA" title="GwyRGBA"><span class="type">GwyRGBA</span></a> *specular</code></em>);
const <a class="link" href="libgwydraw-GwyRGBA.html#GwyRGBA" title="GwyRGBA"><span class="returnvalue">GwyRGBA</span></a> *     <a class="link" href="GwyGLMaterial.html#gwy-gl-material-get-emission" title="gwy_gl_material_get_emission ()">gwy_gl_material_get_emission</a>        (<em class="parameter"><code><a class="link" href="GwyGLMaterial.html" title="GwyGLMaterial"><span class="type">GwyGLMaterial</span></a> *gl_material</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="GwyGLMaterial.html#gwy-gl-material-set-emission" title="gwy_gl_material_set_emission ()">gwy_gl_material_set_emission</a>        (<em class="parameter"><code><a class="link" href="GwyGLMaterial.html" title="GwyGLMaterial"><span class="type">GwyGLMaterial</span></a> *gl_material</code></em>,
                                                         <em class="parameter"><code>const <a class="link" href="libgwydraw-GwyRGBA.html#GwyRGBA" title="GwyRGBA"><span class="type">GwyRGBA</span></a> *emission</code></em>);
<a href="http://developer.gnome.org/doc/API/2.0/glib/glib-Basic-Types.html#gdouble"><span class="returnvalue">gdouble</span></a>             <a class="link" href="GwyGLMaterial.html#gwy-gl-material-get-shininess" title="gwy_gl_material_get_shininess ()">gwy_gl_material_get_shininess</a>       (<em class="parameter"><code><a class="link" href="GwyGLMaterial.html" title="GwyGLMaterial"><span class="type">GwyGLMaterial</span></a> *gl_material</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="GwyGLMaterial.html#gwy-gl-material-set-shininess" title="gwy_gl_material_set_shininess ()">gwy_gl_material_set_shininess</a>       (<em class="parameter"><code><a class="link" href="GwyGLMaterial.html" title="GwyGLMaterial"><span class="type">GwyGLMaterial</span></a> *gl_material</code></em>,
                                                         <em class="parameter"><code><a href="http://developer.gnome.org/doc/API/2.0/glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> shininess</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="GwyGLMaterial.html#gwy-gl-material-sample-to-pixbuf" title="gwy_gl_material_sample_to_pixbuf ()">gwy_gl_material_sample_to_pixbuf</a>    (<em class="parameter"><code><a class="link" href="GwyGLMaterial.html" title="GwyGLMaterial"><span class="type">GwyGLMaterial</span></a> *gl_material</code></em>,
                                                         <em class="parameter"><code><a href="http://developer.gnome.org/doc/API/2.0/gdk-pixbuf/gdk-pixbuf-The-GdkPixbuf-Structure.html#GdkPixbuf"><span class="type">GdkPixbuf</span></a> *pixbuf</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="GwyGLMaterial.html#gwy-gl-material-reset" title="gwy_gl_material_reset ()">gwy_gl_material_reset</a>               (<em class="parameter"><code><a class="link" href="GwyGLMaterial.html" title="GwyGLMaterial"><span class="type">GwyGLMaterial</span></a> *gl_material</code></em>);
<a href="../libgwyddion/GwyInventory.html"><span class="returnvalue">GwyInventory</span></a> *      <a class="link" href="GwyGLMaterial.html#gwy-gl-materials" title="gwy_gl_materials ()">gwy_gl_materials</a>                    (<em class="parameter"><code><span class="type">void</span></code></em>);
<a class="link" href="GwyGLMaterial.html" title="GwyGLMaterial"><span class="returnvalue">GwyGLMaterial</span></a> *     <a class="link" href="GwyGLMaterial.html#gwy-gl-materials-get-gl-material" title="gwy_gl_materials_get_gl_material ()">gwy_gl_materials_get_gl_material</a>    (<em class="parameter"><code>const <a href="http://developer.gnome.org/doc/API/2.0/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);
</pre>
</div>
<div class="refsect1">
<a name="GwyGLMaterial.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="synopsis">
  <a href="http://developer.gnome.org/doc/API/2.0/gobject/gobject-The-Base-Object-Type.html#GObject">GObject</a>
   +----<a href="../libgwyddion/GwyResource.html">GwyResource</a>
         +----GwyGLMaterial
</pre>
</div>
<div class="refsect1">
<a name="GwyGLMaterial.description"></a><h2>Description</h2>
<p>
<a class="link" href="GwyGLMaterial.html" title="GwyGLMaterial"><span class="type">GwyGLMaterial</span></a> represents an OpenGL material.  Its properties directly map
to corresponding OpenGL material characteristics, all are in the range
[0,1].
</p>
<p>
Gradient objects can be obtained from <a class="link" href="GwyGLMaterial.html#gwy-gl-materials-get-gl-material" title="gwy_gl_materials_get_gl_material ()"><code class="function">gwy_gl_materials_get_gl_material()</code></a>.
New GL materials can be created with <a href="../libgwyddion/GwyInventory.html#gwy-inventory-new-item"><code class="function">gwy_inventory_new_item()</code></a> on the
<a href="../libgwyddion/GwyInventory.html"><span class="type">GwyInventory</span></a> returned by <a class="link" href="GwyGLMaterial.html#gwy-gl-materials" title="gwy_gl_materials ()"><code class="function">gwy_gl_materials()</code></a>.
</p>
</div>
<div class="refsect1">
<a name="GwyGLMaterial.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="GwyGLMaterial-struct"></a><h3>struct GwyGLMaterial</h3>
<pre class="programlisting">struct GwyGLMaterial;</pre>
<p>
The <a class="link" href="GwyGLMaterial.html" title="GwyGLMaterial"><span class="type">GwyGLMaterial</span></a> struct contains private data only and should be accessed
using the functions below.
</p>
</div>
<hr>
<div class="refsect2">
<a name="GwyGLMaterialClass"></a><h3>struct GwyGLMaterialClass</h3>
<pre class="programlisting">struct GwyGLMaterialClass;</pre>
<p>
<a class="link" href="GwyGLMaterial.html#GwyGLMaterialClass" title="struct GwyGLMaterialClass"><span class="type">GwyGLMaterialClass</span></a> does not contain any public members.
</p>
</div>
<hr>
<div class="refsect2">
<a name="GWY-GL-MATERIAL-DEFAULT:CAPS"></a><h3>GWY_GL_MATERIAL_DEFAULT</h3>
<pre class="programlisting">#define GWY_GL_MATERIAL_DEFAULT "OpenGL-Default"
</pre>
<p>
The name of the default OpenGL material.
</p>
<p>
It is guaranteed to always exist.
</p>
<p>
Note this is not the same as user's default material which corresponds to
the default item in <a class="link" href="GwyGLMaterial.html#gwy-gl-materials" title="gwy_gl_materials ()"><code class="function">gwy_gl_materials()</code></a> inventory and it change over time.
</p>
</div>
<hr>
<div class="refsect2">
<a name="GWY-GL-MATERIAL-NONE:CAPS"></a><h3>GWY_GL_MATERIAL_NONE</h3>
<pre class="programlisting">#define GWY_GL_MATERIAL_NONE    "None"
</pre>
<p>
The name of special void material with all characteristics zero.
</p>
<p>
It is guaranteed to exist, but you should rarely actually need it.
</p>
</div>
<hr>
<div class="refsect2">
<a name="gwy-gl-material-get-ambient"></a><h3>gwy_gl_material_get_ambient ()</h3>
<pre class="programlisting">const <a class="link" href="libgwydraw-GwyRGBA.html#GwyRGBA" title="GwyRGBA"><span class="returnvalue">GwyRGBA</span></a> *     gwy_gl_material_get_ambient         (<em class="parameter"><code><a class="link" href="GwyGLMaterial.html" title="GwyGLMaterial"><span class="type">GwyGLMaterial</span></a> *gl_material</code></em>);</pre>
<p>
Gets the ambient reflectance of a GL material.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>gl_material</code></em> :</span></p></td>
<td>A GL material.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>Ambient reflectance (owned by GL material, must not be modified
nor freed).</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gwy-gl-material-set-ambient"></a><h3>gwy_gl_material_set_ambient ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                gwy_gl_material_set_ambient         (<em class="parameter"><code><a class="link" href="GwyGLMaterial.html" title="GwyGLMaterial"><span class="type">GwyGLMaterial</span></a> *gl_material</code></em>,
                                                         <em class="parameter"><code>const <a class="link" href="libgwydraw-GwyRGBA.html#GwyRGBA" title="GwyRGBA"><span class="type">GwyRGBA</span></a> *ambient</code></em>);</pre>
<p>
Sets the ambient reflectance of a GL material.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>gl_material</code></em> :</span></p></td>
<td>A GL material.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>ambient</code></em> :</span></p></td>
<td>Ambient reflectance.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gwy-gl-material-get-diffuse"></a><h3>gwy_gl_material_get_diffuse ()</h3>
<pre class="programlisting">const <a class="link" href="libgwydraw-GwyRGBA.html#GwyRGBA" title="GwyRGBA"><span class="returnvalue">GwyRGBA</span></a> *     gwy_gl_material_get_diffuse         (<em class="parameter"><code><a class="link" href="GwyGLMaterial.html" title="GwyGLMaterial"><span class="type">GwyGLMaterial</span></a> *gl_material</code></em>);</pre>
<p>
Gets the diffuse reflectance of a GL material.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>gl_material</code></em> :</span></p></td>
<td>A GL material.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>Diffuse reflectance (owned by GL material, must not be modified
nor freed).</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gwy-gl-material-set-diffuse"></a><h3>gwy_gl_material_set_diffuse ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                gwy_gl_material_set_diffuse         (<em class="parameter"><code><a class="link" href="GwyGLMaterial.html" title="GwyGLMaterial"><span class="type">GwyGLMaterial</span></a> *gl_material</code></em>,
                                                         <em class="parameter"><code>const <a class="link" href="libgwydraw-GwyRGBA.html#GwyRGBA" title="GwyRGBA"><span class="type">GwyRGBA</span></a> *diffuse</code></em>);</pre>
<p>
Sets the diffuse reflectance of a GL material.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>gl_material</code></em> :</span></p></td>
<td>A GL material.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>diffuse</code></em> :</span></p></td>
<td>Diffuse reflectance.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gwy-gl-material-get-specular"></a><h3>gwy_gl_material_get_specular ()</h3>
<pre class="programlisting">const <a class="link" href="libgwydraw-GwyRGBA.html#GwyRGBA" title="GwyRGBA"><span class="returnvalue">GwyRGBA</span></a> *     gwy_gl_material_get_specular        (<em class="parameter"><code><a class="link" href="GwyGLMaterial.html" title="GwyGLMaterial"><span class="type">GwyGLMaterial</span></a> *gl_material</code></em>);</pre>
<p>
Gets the specular reflectance of a GL material.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>gl_material</code></em> :</span></p></td>
<td>A GL material.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>Specular reflectance (owned by GL material, must not be modified
nor freed).</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gwy-gl-material-set-specular"></a><h3>gwy_gl_material_set_specular ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                gwy_gl_material_set_specular        (<em class="parameter"><code><a class="link" href="GwyGLMaterial.html" title="GwyGLMaterial"><span class="type">GwyGLMaterial</span></a> *gl_material</code></em>,
                                                         <em class="parameter"><code>const <a class="link" href="libgwydraw-GwyRGBA.html#GwyRGBA" title="GwyRGBA"><span class="type">GwyRGBA</span></a> *specular</code></em>);</pre>
<p>
Sets the specular reflectance of a GL material.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>gl_material</code></em> :</span></p></td>
<td>A GL material.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>specular</code></em> :</span></p></td>
<td>Specular reflectance.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gwy-gl-material-get-emission"></a><h3>gwy_gl_material_get_emission ()</h3>
<pre class="programlisting">const <a class="link" href="libgwydraw-GwyRGBA.html#GwyRGBA" title="GwyRGBA"><span class="returnvalue">GwyRGBA</span></a> *     gwy_gl_material_get_emission        (<em class="parameter"><code><a class="link" href="GwyGLMaterial.html" title="GwyGLMaterial"><span class="type">GwyGLMaterial</span></a> *gl_material</code></em>);</pre>
<p>
Gets the emission component of a GL material.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>gl_material</code></em> :</span></p></td>
<td>A GL material.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>Emission component (owned by GL material, must not be modified
nor freed).</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gwy-gl-material-set-emission"></a><h3>gwy_gl_material_set_emission ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                gwy_gl_material_set_emission        (<em class="parameter"><code><a class="link" href="GwyGLMaterial.html" title="GwyGLMaterial"><span class="type">GwyGLMaterial</span></a> *gl_material</code></em>,
                                                         <em class="parameter"><code>const <a class="link" href="libgwydraw-GwyRGBA.html#GwyRGBA" title="GwyRGBA"><span class="type">GwyRGBA</span></a> *emission</code></em>);</pre>
<p>
Sets the emission component of a GL material.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>gl_material</code></em> :</span></p></td>
<td>A GL material.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>emission</code></em> :</span></p></td>
<td>Emission component.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gwy-gl-material-get-shininess"></a><h3>gwy_gl_material_get_shininess ()</h3>
<pre class="programlisting"><a href="http://developer.gnome.org/doc/API/2.0/glib/glib-Basic-Types.html#gdouble"><span class="returnvalue">gdouble</span></a>             gwy_gl_material_get_shininess       (<em class="parameter"><code><a class="link" href="GwyGLMaterial.html" title="GwyGLMaterial"><span class="type">GwyGLMaterial</span></a> *gl_material</code></em>);</pre>
<p>
Gets the shininess value of a GL material.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>gl_material</code></em> :</span></p></td>
<td>A GL material.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The shininess value (in range 0..1, not 0..128).</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gwy-gl-material-set-shininess"></a><h3>gwy_gl_material_set_shininess ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                gwy_gl_material_set_shininess       (<em class="parameter"><code><a class="link" href="GwyGLMaterial.html" title="GwyGLMaterial"><span class="type">GwyGLMaterial</span></a> *gl_material</code></em>,
                                                         <em class="parameter"><code><a href="http://developer.gnome.org/doc/API/2.0/glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> shininess</code></em>);</pre>
<p>
Sets the shininess value of a GL material.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>gl_material</code></em> :</span></p></td>
<td>A GL material.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>shininess</code></em> :</span></p></td>
<td>Shinniness value (in range 0..1, not 0..128).</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gwy-gl-material-sample-to-pixbuf"></a><h3>gwy_gl_material_sample_to_pixbuf ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                gwy_gl_material_sample_to_pixbuf    (<em class="parameter"><code><a class="link" href="GwyGLMaterial.html" title="GwyGLMaterial"><span class="type">GwyGLMaterial</span></a> *gl_material</code></em>,
                                                         <em class="parameter"><code><a href="http://developer.gnome.org/doc/API/2.0/gdk-pixbuf/gdk-pixbuf-The-GdkPixbuf-Structure.html#GdkPixbuf"><span class="type">GdkPixbuf</span></a> *pixbuf</code></em>);</pre>
<p>
Samples GL material to a provided pixbuf.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>gl_material</code></em> :</span></p></td>
<td>A GL material to sample.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>pixbuf</code></em> :</span></p></td>
<td>A pixbuf to sample gl_material to (in horizontal direction).</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gwy-gl-material-reset"></a><h3>gwy_gl_material_reset ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                gwy_gl_material_reset               (<em class="parameter"><code><a class="link" href="GwyGLMaterial.html" title="GwyGLMaterial"><span class="type">GwyGLMaterial</span></a> *gl_material</code></em>);</pre>
<p>
Resets a GL material to default values.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>gl_material</code></em> :</span></p></td>
<td>A GL material.</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gwy-gl-materials"></a><h3>gwy_gl_materials ()</h3>
<pre class="programlisting"><a href="../libgwyddion/GwyInventory.html"><span class="returnvalue">GwyInventory</span></a> *      gwy_gl_materials                    (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>
Gets inventory with all the GL materials.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody><tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>GL material inventory.</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gwy-gl-materials-get-gl-material"></a><h3>gwy_gl_materials_get_gl_material ()</h3>
<pre class="programlisting"><a class="link" href="GwyGLMaterial.html" title="GwyGLMaterial"><span class="returnvalue">GwyGLMaterial</span></a> *     gwy_gl_materials_get_gl_material    (<em class="parameter"><code>const <a href="http://developer.gnome.org/doc/API/2.0/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);</pre>
<p>
Convenience function to get a GL material from <a class="link" href="GwyGLMaterial.html#gwy-gl-materials" title="gwy_gl_materials ()"><code class="function">gwy_gl_materials()</code></a> by name.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td>
<td>GL material name.  May be <a href="http://developer.gnome.org/doc/API/2.0/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> to get the default GL material.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>GL material identified by <em class="parameter"><code>name</code></em> or the default GL material if <em class="parameter"><code>name</code></em>
does not exist.</td>
</tr>
</tbody>
</table></div>
</div>
</div>
<div class="refsect1">
<a name="GwyGLMaterial.see-also"></a><h2>See Also</h2>
<a href="../libgwydgets/Gwy3DView.html"><span class="type">Gwy3DView</span></a> -- 3D data display widget,
           <a class="link" href="libgwydraw-GwyRGBA.html#GwyRGBA" title="GwyRGBA"><span class="type">GwyRGBA</span></a> -- representation of color components,
           <a href="../libgwyddion/GwyInventory.html"><span class="type">GwyInventory</span></a> -- the container holding all GL materials
</div>
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