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<h1>openvrml::node_class Class Reference</h1>A class object for node instances.
<a href="#_details">More...</a>
<p>
Inheritance diagram for openvrml::node_class:<p><center><img src="classopenvrml_1_1node__class__inherit__graph.png" border="0" usemap="#openvrml_1_1node__class__inherit__map" alt="Inheritance graph"></center>
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<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center>Collaboration diagram for openvrml::node_class:<p><center><img src="classopenvrml_1_1node__class__coll__graph.png" border="0" usemap="#openvrml_1_1node__class__coll__map" alt="Collaboration graph"></center>
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<area href="classopenvrml_1_1scene.html" shape="rect" coords="269,289,379,308" alt="">
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<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center><a href="classopenvrml_1_1node__class-members.html">List of all members.</a><table border=0 cellpadding=0 cellspacing=0>
<tr><td></td></tr>
<tr><td colspan=2><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="anchor" name="a0" doxytag="openvrml::node_class::~node_class" ></a>
virtual </td><td class="memItemRight" valign=bottom><a class="el" href="classopenvrml_1_1node__class.html#a0">~node_class</a> ()=0 throw ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Destructor. <br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="classopenvrml_1_1node__class.html#a1">initialize</a> (<a class="el" href="classopenvrml_1_1viewpoint__node.html">viewpoint_node</a> *initial_viewpoint, double time) throw ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">node_class-specific initialization. <a href="#a1"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="classopenvrml_1_1node__class.html#a2">render</a> (<a class="el" href="classopenvrml_1_1viewer.html">openvrml::viewer</a> &<a class="el" href="classopenvrml_1_1viewer.html">viewer</a>) throw ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">node_class-specific rendering. <a href="#a2"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual const <a class="el" href="classopenvrml_1_1node__type__ptr.html">node_type_ptr</a> </td><td class="memItemRight" valign=bottom><a class="el" href="classopenvrml_1_1node__class.html#a3">create_type</a> (const std::string &id, const <a class="el" href="classopenvrml_1_1node__interface__set.html">node_interface_set</a> &interfaces)=0 throw (unsupported_interface, std::bad_alloc)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Create a new <a class="el" href="classopenvrml_1_1node__type.html">node_type</a>. <a href="#a3"></a><br><br></td></tr>
<tr><td colspan=2><br><h2>Public Attributes</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="anchor" name="o0" doxytag="openvrml::node_class::browser" ></a>
<a class="el" href="classopenvrml_1_1browser.html">openvrml::browser</a> & </td><td class="memItemRight" valign=bottom><a class="el" href="classopenvrml_1_1node__class.html#o0">browser</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">The browser associated with this <a class="el" href="classopenvrml_1_1node__class.html">node_class</a>. <br><br></td></tr>
<tr><td colspan=2><br><h2>Protected Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top> </td><td class="memItemRight" valign=bottom><a class="el" href="classopenvrml_1_1node__class.html#b0">node_class</a> (<a class="el" href="classopenvrml_1_1browser.html">openvrml::browser</a> &b) throw ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Constructor. <a href="#b0"></a><br><br></td></tr>
</table>
<hr><a name="_details"></a><h2>Detailed Description</h2>
A class object for node instances.
<p>
<a class="el" href="classopenvrml_1_1node__class.html">node_class</a> can be thought of as a "supertype" of sorts. A given node implementation can support as many node types as there are unique combinations of the interfaces it supports. The most readily apparent role of the <a class="el" href="classopenvrml_1_1node__class.html">node_class</a> object for a node implementation is to serve as a factory for these <a class="el" href="classopenvrml_1_1node__type.html">node_types</a>.
<p>
<hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="b0" doxytag="openvrml::node_class::node_class" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top"> openvrml::node_class::node_class </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="classopenvrml_1_1browser.html">openvrml::browser</a> & </td>
<td class="mdname1" valign="top" nowrap> <em>b</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> throw ()<code> [explicit, protected]</code></td>
</tr>
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</td>
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<td>
</td>
<td>
<p>
Constructor.
<p>
A <a class="el" href="classopenvrml_1_1node__class.html">node_class</a> is constructed using a browser. All node instances that share a particular <a class="el" href="classopenvrml_1_1node__class.html">node_class</a> "belong to" the browser associated with the <a class="el" href="classopenvrml_1_1node__class.html">node_class</a>.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign=top><em>b</em> </td><td>the browser to be associated with the <a class="el" href="classopenvrml_1_1node__class.html">node_class</a>. </td></tr>
</table>
</dl>
</td>
</tr>
</table>
<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="a3" doxytag="openvrml::node_class::create_type" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<td class="md" nowrap valign="top"> const <a class="el" href="classopenvrml_1_1node__type__ptr.html">node_type_ptr</a> openvrml::node_class::create_type </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const std::string & </td>
<td class="mdname" nowrap> <em>id</em>, </td>
</tr>
<tr>
<td></td>
<td></td>
<td class="md" nowrap>const <a class="el" href="classopenvrml_1_1node__interface__set.html">node_interface_set</a> & </td>
<td class="mdname" nowrap> <em>interfaces</em></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"> throw (<a class="el" href="classopenvrml_1_1unsupported__interface.html">unsupported_interface</a>, std::bad_alloc)<code> [pure virtual]</code></td>
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</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Create a new <a class="el" href="classopenvrml_1_1node__type.html">node_type</a>.
<p>
<a class="el" href="classopenvrml_1_1node__type.html">node_types</a> can be said to subset the master type provided by the <a class="el" href="classopenvrml_1_1node__class.html">node_class</a>. Each <a class="el" href="classopenvrml_1_1node__class.html">node_class</a> instance can support certain node interfaces; the <a class="el" href="classopenvrml_1_1node__interface__set.html">node_interface_set</a> passed to createType must be a subset of those supported interfaces.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign=top><em>id</em> </td><td>the name for the new <a class="el" href="classopenvrml_1_1node__type.html">node_type</a>. </td></tr>
<tr><td valign=top><em>interfaces</em> </td><td>a <a class="el" href="classopenvrml_1_1node__interface__set.html">node_interface_set</a> containing the interfaces for the new type.</td></tr>
</table>
</dl>
<dl compact><dt><b>Returns:</b></dt><dd>a <a class="el" href="classopenvrml_1_1node__type__ptr.html">node_type_ptr</a> to the newly created <a class="el" href="classopenvrml_1_1node__type.html">node_type</a>.</dd></dl>
<dl compact><dt><b>Exceptions:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign=top><em>std::invalid_argument</em> </td><td>if the <a class="el" href="classopenvrml_1_1node__class.html">node_class</a> cannot support one of the <a class="el" href="classopenvrml_1_1node__interface.html">node_interfaces</a> in <code>interfaces</code>. </td></tr>
<tr><td valign=top><em>std::bad_alloc</em> </td><td>if memory allocation fails. </td></tr>
</table>
</dl>
<p>
Implemented in <a class="el" href="classopenvrml_1_1script__node__class.html#a2">openvrml::script_node_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1group__class.html#a2">openvrml::vrml97_node::group_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1anchor__class.html#a2">openvrml::vrml97_node::anchor_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1appearance__class.html#a2">openvrml::vrml97_node::appearance_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1audio__clip__class.html#a2">openvrml::vrml97_node::audio_clip_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1background__class.html#a8">openvrml::vrml97_node::background_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1billboard__class.html#a2">openvrml::vrml97_node::billboard_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1box__class.html#a2">openvrml::vrml97_node::box_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1collision__class.html#a2">openvrml::vrml97_node::collision_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1color__class.html#a2">openvrml::vrml97_node::color_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1color__interpolator__class.html#a2">openvrml::vrml97_node::color_interpolator_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1cone__class.html#a2">openvrml::vrml97_node::cone_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1coordinate__class.html#a2">openvrml::vrml97_node::coordinate_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1coordinate__interpolator__class.html#a2">openvrml::vrml97_node::coordinate_interpolator_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1cylinder__class.html#a2">openvrml::vrml97_node::cylinder_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1cylinder__sensor__class.html#a2">openvrml::vrml97_node::cylinder_sensor_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1directional__light__class.html#a2">openvrml::vrml97_node::directional_light_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1elevation__grid__class.html#a2">openvrml::vrml97_node::elevation_grid_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1extrusion__class.html#a2">openvrml::vrml97_node::extrusion_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1fog__class.html#a8">openvrml::vrml97_node::fog_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1font__style__class.html#a2">openvrml::vrml97_node::font_style_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1image__texture__class.html#a2">openvrml::vrml97_node::image_texture_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1indexed__face__set__class.html#a2">openvrml::vrml97_node::indexed_face_set_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1indexed__line__set__class.html#a2">openvrml::vrml97_node::indexed_line_set_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1inline__class.html#a2">openvrml::vrml97_node::inline_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1lod__class.html#a2">openvrml::vrml97_node::lod_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1material__class.html#a2">openvrml::vrml97_node::material_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1movie__texture__class.html#a2">openvrml::vrml97_node::movie_texture_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1navigation__info__class.html#a2">openvrml::vrml97_node::navigation_info_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1normal__class.html#a2">openvrml::vrml97_node::normal_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1normal__interpolator__class.html#a2">openvrml::vrml97_node::normal_interpolator_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1orientation__interpolator__class.html#a2">openvrml::vrml97_node::orientation_interpolator_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1pixel__texture__class.html#a2">openvrml::vrml97_node::pixel_texture_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1plane__sensor__class.html#a2">openvrml::vrml97_node::plane_sensor_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1point__light__class.html#a2">openvrml::vrml97_node::point_light_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1point__set__class.html#a2">openvrml::vrml97_node::point_set_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1position__interpolator__class.html#a2">openvrml::vrml97_node::position_interpolator_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1proximity__sensor__class.html#a2">openvrml::vrml97_node::proximity_sensor_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1scalar__interpolator__class.html#a2">openvrml::vrml97_node::scalar_interpolator_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1shape__class.html#a2">openvrml::vrml97_node::shape_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1sound__class.html#a2">openvrml::vrml97_node::sound_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1sphere__class.html#a2">openvrml::vrml97_node::sphere_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1sphere__sensor__class.html#a2">openvrml::vrml97_node::sphere_sensor_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1spot__light__class.html#a2">openvrml::vrml97_node::spot_light_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1switch__class.html#a2">openvrml::vrml97_node::switch_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1text__class.html#a2">openvrml::vrml97_node::text_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1texture__coordinate__class.html#a2">openvrml::vrml97_node::texture_coordinate_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1texture__transform__class.html#a2">openvrml::vrml97_node::texture_transform_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1time__sensor__class.html#a2">openvrml::vrml97_node::time_sensor_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1touch__sensor__class.html#a2">openvrml::vrml97_node::touch_sensor_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1transform__class.html#a2">openvrml::vrml97_node::transform_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1viewpoint__class.html#a7">openvrml::vrml97_node::viewpoint_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1visibility__sensor__class.html#a2">openvrml::vrml97_node::visibility_sensor_class</a>, and <a class="el" href="classopenvrml_1_1vrml97__node_1_1world__info__class.html#a2">openvrml::vrml97_node::world_info_class</a>. </td>
</tr>
</table>
<a class="anchor" name="a1" doxytag="openvrml::node_class::initialize" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
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<td class="md" nowrap valign="top"> void openvrml::node_class::initialize </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="classopenvrml_1_1viewpoint__node.html">viewpoint_node</a> * </td>
<td class="mdname" nowrap> <em>initial_viewpoint</em>, </td>
</tr>
<tr>
<td></td>
<td></td>
<td class="md" nowrap>double </td>
<td class="mdname" nowrap> <em>time</em></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"> throw ()<code> [virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
node_class-specific initialization.
<p>
This method is called during initialization of a browser object with a new root Scene. It is called after the individual node instances have been initialized, and before the world starts running.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign=top><em>initial_viewpoint</em> </td><td>the <a class="el" href="classopenvrml_1_1viewpoint__node.html">viewpoint_node</a> that should be bound initially; or 0 if the default <a class="el" href="classopenvrml_1_1viewpoint__node.html">viewpoint_node</a> should be bound. </td></tr>
<tr><td valign=top><em>time</em> </td><td>the current time. </td></tr>
</table>
</dl>
<p>
Reimplemented in <a class="el" href="classopenvrml_1_1vrml97__node_1_1background__class.html#a6">openvrml::vrml97_node::background_class</a>, <a class="el" href="classopenvrml_1_1vrml97__node_1_1fog__class.html#a6">openvrml::vrml97_node::fog_class</a>, and <a class="el" href="classopenvrml_1_1vrml97__node_1_1viewpoint__class.html#a6">openvrml::vrml97_node::viewpoint_class</a>. </td>
</tr>
</table>
<a class="anchor" name="a2" doxytag="openvrml::node_class::render" ></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void openvrml::node_class::render </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="classopenvrml_1_1viewer.html">openvrml::viewer</a> & </td>
<td class="mdname1" valign="top" nowrap> <em>viewer</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> throw ()<code> [virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
node_class-specific rendering.
<p>
The default implementation of this method does nothing.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign=top><em>viewer</em> </td><td>the viewer to render to. </td></tr>
</table>
</dl>
<p>
Reimplemented in <a class="el" href="classopenvrml_1_1vrml97__node_1_1background__class.html#a7">openvrml::vrml97_node::background_class</a>, and <a class="el" href="classopenvrml_1_1vrml97__node_1_1fog__class.html#a7">openvrml::vrml97_node::fog_class</a>. </td>
</tr>
</table>
</div>
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