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<h2><span class="refentrytitle"><a name="libg3d-object.top_of_page"></a>object</span></h2>
<p>object — Object manipulation</p>
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<div class="refsynopsisdiv">
<a name="libg3d-object.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">
#include <g3d/object.h>
<a class="link" href="libg3d-object.html#G3DObject" title="G3DObject">G3DObject</a>;
<a class="link" href="libg3d-object.html#G3DTransformation" title="G3DTransformation">G3DTransformation</a>;
<span class="returnvalue">void</span> <a class="link" href="libg3d-object.html#g3d-object-free" title="g3d_object_free ()">g3d_object_free</a> (<em class="parameter"><code><a class="link" href="libg3d-object.html#G3DObject" title="G3DObject"><span class="type">G3DObject</span></a> *object</code></em>);
<span class="returnvalue">gdouble</span> <a class="link" href="libg3d-object.html#g3d-object-radius" title="g3d_object_radius ()">g3d_object_radius</a> (<em class="parameter"><code><a class="link" href="libg3d-object.html#G3DObject" title="G3DObject"><span class="type">G3DObject</span></a> *object</code></em>);
<span class="returnvalue">gboolean</span> <a class="link" href="libg3d-object.html#g3d-object-scale" title="g3d_object_scale ()">g3d_object_scale</a> (<em class="parameter"><code><a class="link" href="libg3d-object.html#G3DObject" title="G3DObject"><span class="type">G3DObject</span></a> *object</code></em>,
<em class="parameter"><code><a class="link" href="libg3d-types.html#G3DFloat" title="G3DFloat"><span class="type">G3DFloat</span></a> scale</code></em>);
<span class="returnvalue">gboolean</span> <a class="link" href="libg3d-object.html#g3d-object-transform" title="g3d_object_transform ()">g3d_object_transform</a> (<em class="parameter"><code><a class="link" href="libg3d-object.html#G3DObject" title="G3DObject"><span class="type">G3DObject</span></a> *object</code></em>,
<em class="parameter"><code><a class="link" href="libg3d-matrix.html#G3DMatrix" title="G3DMatrix"><span class="type">G3DMatrix</span></a> *matrix</code></em>);
<span class="returnvalue">gboolean</span> <a class="link" href="libg3d-object.html#g3d-object-transform-normals" title="g3d_object_transform_normals ()">g3d_object_transform_normals</a> (<em class="parameter"><code><a class="link" href="libg3d-object.html#G3DObject" title="G3DObject"><span class="type">G3DObject</span></a> *object</code></em>,
<em class="parameter"><code><a class="link" href="libg3d-matrix.html#G3DMatrix" title="G3DMatrix"><span class="type">G3DMatrix</span></a> *matrix</code></em>);
<a class="link" href="libg3d-object.html#G3DObject" title="G3DObject"><span class="returnvalue">G3DObject</span></a> * <a class="link" href="libg3d-object.html#g3d-object-duplicate" title="g3d_object_duplicate ()">g3d_object_duplicate</a> (<em class="parameter"><code><a class="link" href="libg3d-object.html#G3DObject" title="G3DObject"><span class="type">G3DObject</span></a> *object</code></em>);
<span class="returnvalue">gboolean</span> <a class="link" href="libg3d-object.html#g3d-object-optimize" title="g3d_object_optimize ()">g3d_object_optimize</a> (<em class="parameter"><code><a class="link" href="libg3d-object.html#G3DObject" title="G3DObject"><span class="type">G3DObject</span></a> *object</code></em>);
<span class="returnvalue">gboolean</span> <a class="link" href="libg3d-object.html#g3d-object-smooth" title="g3d_object_smooth ()">g3d_object_smooth</a> (<em class="parameter"><code><a class="link" href="libg3d-object.html#G3DObject" title="G3DObject"><span class="type">G3DObject</span></a> *object</code></em>);
<span class="returnvalue">gboolean</span> <a class="link" href="libg3d-object.html#g3d-object-merge" title="g3d_object_merge ()">g3d_object_merge</a> (<em class="parameter"><code><a class="link" href="libg3d-object.html#G3DObject" title="G3DObject"><span class="type">G3DObject</span></a> *o1</code></em>,
<em class="parameter"><code><a class="link" href="libg3d-object.html#G3DObject" title="G3DObject"><span class="type">G3DObject</span></a> *o2</code></em>);
</pre>
</div>
<div class="refsect1">
<a name="libg3d-object.description"></a><h2>Description</h2>
<p>
Objects are parts of a model. In most file formats vertices and faces are
grouped in some way into objects. Objects can be hierarchical, so what a
model contains is basically an object tree.
</p>
</div>
<div class="refsect1">
<a name="libg3d-object.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="G3DObject"></a><h3>G3DObject</h3>
<pre class="programlisting">typedef struct {
gchar *name;
GSList *materials;
GSList *faces;
GSList *objects;
/* transformation, may be NULL */
G3DTransformation *transformation;
/* don't render this object */
gboolean hide;
/* vertices */
guint32 vertex_count;
G3DVector *vertex_data;
} G3DObject;
</pre>
<p>
A three-dimensional object.
</p>
<div class="variablelist"><table border="0">
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<td><p><span class="term"><span class="type">gchar</span> *<em class="structfield"><code><a name="G3DObject.name"></a>name</code></em>;</span></p></td>
<td>name of object</td>
</tr>
<tr>
<td><p><span class="term"><span class="type">GSList</span> *<em class="structfield"><code><a name="G3DObject.materials"></a>materials</code></em>;</span></p></td>
<td>list of materials</td>
</tr>
<tr>
<td><p><span class="term"><span class="type">GSList</span> *<em class="structfield"><code><a name="G3DObject.faces"></a>faces</code></em>;</span></p></td>
<td>list of faces</td>
</tr>
<tr>
<td><p><span class="term"><span class="type">GSList</span> *<em class="structfield"><code><a name="G3DObject.objects"></a>objects</code></em>;</span></p></td>
<td>list of sub-objects</td>
</tr>
<tr>
<td><p><span class="term"><a class="link" href="libg3d-object.html#G3DTransformation" title="G3DTransformation"><span class="type">G3DTransformation</span></a> *<em class="structfield"><code><a name="G3DObject.transformation"></a>transformation</code></em>;</span></p></td>
<td>optional transformation</td>
</tr>
<tr>
<td><p><span class="term"><span class="type">gboolean</span> <em class="structfield"><code><a name="G3DObject.hide"></a>hide</code></em>;</span></p></td>
<td>flag to disable object rendering</td>
</tr>
<tr>
<td><p><span class="term"><span class="type">guint32</span> <em class="structfield"><code><a name="G3DObject.vertex-count"></a>vertex_count</code></em>;</span></p></td>
<td>number of vertices</td>
</tr>
<tr>
<td><p><span class="term"><a class="link" href="libg3d-vector.html#G3DVector" title="G3DVector"><span class="type">G3DVector</span></a> *<em class="structfield"><code><a name="G3DObject.vertex-data"></a>vertex_data</code></em>;</span></p></td>
<td>vertex vector data</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="G3DTransformation"></a><h3>G3DTransformation</h3>
<pre class="programlisting">typedef struct {
G3DMatrix matrix[16];
guint32 flags;
} G3DTransformation;
</pre>
<p>
A three-dimensional matrix transformation object.
</p>
<div class="variablelist"><table border="0">
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<td><p><span class="term"><a class="link" href="libg3d-matrix.html#G3DMatrix" title="G3DMatrix"><span class="type">G3DMatrix</span></a> <em class="structfield"><code><a name="G3DTransformation.matrix"></a>matrix</code></em>[16];</span></p></td>
<td>the transformation matrix</td>
</tr>
<tr>
<td><p><span class="term"><span class="type">guint32</span> <em class="structfield"><code><a name="G3DTransformation.flags"></a>flags</code></em>;</span></p></td>
<td>flags</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="g3d-object-free"></a><h3>g3d_object_free ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> g3d_object_free (<em class="parameter"><code><a class="link" href="libg3d-object.html#G3DObject" title="G3DObject"><span class="type">G3DObject</span></a> *object</code></em>);</pre>
<p>
Frees all memory allocated for that object.
</p>
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<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>object</code></em> :</span></p></td>
<td>the object to free</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="g3d-object-radius"></a><h3>g3d_object_radius ()</h3>
<pre class="programlisting"><span class="returnvalue">gdouble</span> g3d_object_radius (<em class="parameter"><code><a class="link" href="libg3d-object.html#G3DObject" title="G3DObject"><span class="type">G3DObject</span></a> *object</code></em>);</pre>
<p>
Calculates the radius of the object. This is the maximum from the
center to a vertex.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>object</code></em> :</span></p></td>
<td>the object to measure</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the radius of the given object</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="g3d-object-scale"></a><h3>g3d_object_scale ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span> g3d_object_scale (<em class="parameter"><code><a class="link" href="libg3d-object.html#G3DObject" title="G3DObject"><span class="type">G3DObject</span></a> *object</code></em>,
<em class="parameter"><code><a class="link" href="libg3d-types.html#G3DFloat" title="G3DFloat"><span class="type">G3DFloat</span></a> scale</code></em>);</pre>
<p>
Resizes the object by the factor <em class="parameter"><code>scale</code></em>.
</p>
<div class="variablelist"><table border="0">
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<tr>
<td><p><span class="term"><em class="parameter"><code>object</code></em> :</span></p></td>
<td>the object to scale</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>scale</code></em> :</span></p></td>
<td>scale factor</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>TRUE on success, FALSE else</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="g3d-object-transform"></a><h3>g3d_object_transform ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span> g3d_object_transform (<em class="parameter"><code><a class="link" href="libg3d-object.html#G3DObject" title="G3DObject"><span class="type">G3DObject</span></a> *object</code></em>,
<em class="parameter"><code><a class="link" href="libg3d-matrix.html#G3DMatrix" title="G3DMatrix"><span class="type">G3DMatrix</span></a> *matrix</code></em>);</pre>
<p>
Multiplies all vertices of the object with the transformation matrix.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>object</code></em> :</span></p></td>
<td>the object to transform</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>matrix</code></em> :</span></p></td>
<td>the transformation matrix</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>TRUE on success, FALSE else</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="g3d-object-transform-normals"></a><h3>g3d_object_transform_normals ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span> g3d_object_transform_normals (<em class="parameter"><code><a class="link" href="libg3d-object.html#G3DObject" title="G3DObject"><span class="type">G3DObject</span></a> *object</code></em>,
<em class="parameter"><code><a class="link" href="libg3d-matrix.html#G3DMatrix" title="G3DMatrix"><span class="type">G3DMatrix</span></a> *matrix</code></em>);</pre>
<p>
Multiplies all normals of the object with the transformation matrix.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>object</code></em> :</span></p></td>
<td>the object to transform</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>matrix</code></em> :</span></p></td>
<td>the transformation matrix</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>TRUE on success, FALSE else</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="g3d-object-duplicate"></a><h3>g3d_object_duplicate ()</h3>
<pre class="programlisting"><a class="link" href="libg3d-object.html#G3DObject" title="G3DObject"><span class="returnvalue">G3DObject</span></a> * g3d_object_duplicate (<em class="parameter"><code><a class="link" href="libg3d-object.html#G3DObject" title="G3DObject"><span class="type">G3DObject</span></a> *object</code></em>);</pre>
<p>
Duplicates an object with all vertices, faces and materials.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>object</code></em> :</span></p></td>
<td>the object to duplicate</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the new clone object</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="g3d-object-optimize"></a><h3>g3d_object_optimize ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span> g3d_object_optimize (<em class="parameter"><code><a class="link" href="libg3d-object.html#G3DObject" title="G3DObject"><span class="type">G3DObject</span></a> *object</code></em>);</pre>
<p>
Puts all vertex and face information into special arrays for faster
rendering. It is deprecated and should not be used.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>object</code></em> :</span></p></td>
<td>the object to optimize</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>TRUE on success, FALSE else</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="g3d-object-smooth"></a><h3>g3d_object_smooth ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span> g3d_object_smooth (<em class="parameter"><code><a class="link" href="libg3d-object.html#G3DObject" title="G3DObject"><span class="type">G3DObject</span></a> *object</code></em>);</pre>
<p>
FIXME: unimplemented.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>object</code></em> :</span></p></td>
<td>the object to smooth</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>TRUE on success, FALSE else</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="g3d-object-merge"></a><h3>g3d_object_merge ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span> g3d_object_merge (<em class="parameter"><code><a class="link" href="libg3d-object.html#G3DObject" title="G3DObject"><span class="type">G3DObject</span></a> *o1</code></em>,
<em class="parameter"><code><a class="link" href="libg3d-object.html#G3DObject" title="G3DObject"><span class="type">G3DObject</span></a> *o2</code></em>);</pre>
<p>
Merges both objects into <em class="parameter"><code>o1</code></em>.
FIXME: needs cleanup
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
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<tr>
<td><p><span class="term"><em class="parameter"><code>o1</code></em> :</span></p></td>
<td>first and target object</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>o2</code></em> :</span></p></td>
<td>second object</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>TRUE on success, FALSE else</td>
</tr>
</tbody>
</table></div>
</div>
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