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<h1>Ogre::Octree Class Reference</h1><a class="el" href="classOgre_1_1Octree.html">Octree</a> datastructure for managing scene nodes.
<a href="#_details">More...</a>
<p>
<code>#include <<a class="el" href="OgreOctree_8h-source.html">OgreOctree.h</a>></code>
<p>
<a href="classOgre_1_1Octree-members.html">List of all members.</a><table border=0 cellpadding=0 cellspacing=0>
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<tr><td colspan=2><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top> </td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1Octree.html#Ogre_1_1Octreea0">Octree</a> (<a class="el" href="classOgre_1_1Octree.html">Octree</a> *p)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top> </td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1Octree.html#Ogre_1_1Octreea1">~Octree</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1Octree.html#Ogre_1_1Octreea2">_addNode</a> (<a class="el" href="classOgre_1_1OctreeNode.html">OctreeNode</a> *)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Adds an <a class="el" href="classOgre_1_1Octree.html">Octree</a> scene node to this octree level. <a href="#Ogre_1_1Octreea2"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1Octree.html#Ogre_1_1Octreea3">_removeNode</a> (<a class="el" href="classOgre_1_1OctreeNode.html">OctreeNode</a> *)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Removes an <a class="el" href="classOgre_1_1Octree.html">Octree</a> scene node to this octree level. <a href="#Ogre_1_1Octreea3"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>int </td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1Octree.html#Ogre_1_1Octreea4">numNodes</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the number of scene nodes attached to this octree. <a href="#Ogre_1_1Octreea4"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="classOgre_1_1WireBoundingBox.html">WireBoundingBox</a> * </td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1Octree.html#Ogre_1_1Octreea5">getWireBoundingBox</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Creats the wire frame bounding box for this octant. <a href="#Ogre_1_1Octreea5"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>bool </td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1Octree.html#Ogre_1_1Octreea6">_isTwiceSize</a> (<a class="el" href="classOgre_1_1AxisAlignedBox.html">AxisAlignedBox</a> &box)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Determines if this octree is twice as big as the given box. <a href="#Ogre_1_1Octreea6"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1Octree.html#Ogre_1_1Octreea7">_getChildIndexes</a> (<a class="el" href="classOgre_1_1AxisAlignedBox.html">AxisAlignedBox</a> &, int *x, int *y, int *z)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the appropriate indexes for the child of this octree into which the box will fit. <a href="#Ogre_1_1Octreea7"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1Octree.html#Ogre_1_1Octreea8">_getCullBounds</a> (<a class="el" href="classOgre_1_1AxisAlignedBox.html">AxisAlignedBox</a> *)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Creates the <a class="el" href="classOgre_1_1AxisAlignedBox.html">AxisAlignedBox</a> used for culling this octree. <a href="#Ogre_1_1Octreea8"></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="el" href="classOgre_1_1AxisAlignedBox.html">AxisAlignedBox</a> </td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1Octree.html#Ogre_1_1Octreeo0">mBox</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">The bounding box of the octree. <a href="#Ogre_1_1Octreeo0"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="classOgre_1_1WireBoundingBox.html">WireBoundingBox</a> * </td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1Octree.html#Ogre_1_1Octreeo1">mWireBoundingBox</a></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="classOgre_1_1Vector3.html">Vector3</a> </td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1Octree.html#Ogre_1_1Octreeo2">mHalfSize</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Vector containing the dimensions of this octree / 2. <a href="#Ogre_1_1Octreeo2"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="classOgre_1_1Octree.html">Octree</a> * </td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1Octree.html#Ogre_1_1Octreeo3">mChildren</a> [2][2][2]</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">3D array of children of this octree. <a href="#Ogre_1_1Octreeo3"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="namespaceOgre.html#a556">NodeList</a> </td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1Octree.html#Ogre_1_1Octreeo4">mNodes</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Public list of SceneNodes attached to this particular octree. <a href="#Ogre_1_1Octreeo4"></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>void </td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1Octree.html#Ogre_1_1Octreeb0">_ref</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Increments the overall node count of this octree and all it's parents. <a href="#Ogre_1_1Octreeb0"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1Octree.html#Ogre_1_1Octreeb1">_unref</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Decrements the overall node count of this octree and all it's parents. <a href="#Ogre_1_1Octreeb1"></a><br><br></td></tr>
<tr><td colspan=2><br><h2>Protected Attributes</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>int </td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1Octree.html#Ogre_1_1Octreep0">mNumNodes</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">number of SceneNodes in this octree and all it's children. <a href="#Ogre_1_1Octreep0"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="classOgre_1_1Octree.html">Octree</a> * </td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1Octree.html#Ogre_1_1Octreep1">mParent</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">parent octree <a href="#Ogre_1_1Octreep1"></a><br><br></td></tr>
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<hr><a name="_details"></a><h2>Detailed Description</h2>
<a class="el" href="classOgre_1_1Octree.html">Octree</a> datastructure for managing scene nodes.
<p>
<dl compact><dt><b>Remarks:</b></dt><dd>This is a loose octree implementation, meaning that each octant child of the octree actually overlaps it's siblings by a factor of .5. This guarantees that any thing that is half the size of the parent will fit completely into a child, with no splitting necessary. </dd></dl>
<p>
<p>
Definition at line <a class="el" href="OgreOctree_8h-source.html#l00059">59</a> of file <a class="el" href="OgreOctree_8h-source.html">OgreOctree.h</a>.<hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="Ogre_1_1Octreea0" doxytag="Ogre::Octree::Octree" ></a><p>
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<td class="md" nowrap valign="top"> Ogre::Octree::Octree </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="classOgre_1_1Octree.html">Octree</a> * </td>
<td class="mdname1" valign="top" nowrap> <em>p</em> </td>
<td class="md" valign="top"> ) </td>
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<a class="anchor" name="Ogre_1_1Octreea1" doxytag="Ogre::Octree::~Octree" ></a><p>
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<td class="md" nowrap valign="top"> Ogre::Octree::~<a class="el" href="classOgre_1_1Octree.html">Octree</a> </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
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<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="Ogre_1_1Octreea2" doxytag="Ogre::Octree::_addNode" ></a><p>
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<td class="md" nowrap valign="top"> void Ogre::Octree::_addNode </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="classOgre_1_1OctreeNode.html">OctreeNode</a> * </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
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<p>
Adds an <a class="el" href="classOgre_1_1Octree.html">Octree</a> scene node to this octree level.
<p>
<dl compact><dt><b>Remarks:</b></dt><dd>This is called by the <a class="el" href="classOgre_1_1OctreeSceneManager.html">OctreeSceneManager</a> after it has determined the correct <a class="el" href="classOgre_1_1Octree.html">Octree</a> to insert the node into. </dd></dl>
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<a class="anchor" name="Ogre_1_1Octreea7" doxytag="Ogre::Octree::_getChildIndexes" ></a><p>
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<td class="md" nowrap valign="top"> void Ogre::Octree::_getChildIndexes </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="classOgre_1_1AxisAlignedBox.html">AxisAlignedBox</a> & </td>
<td class="mdname" nowrap>, </td>
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<td class="md" nowrap align="right"></td>
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<td class="md" nowrap>int * </td>
<td class="mdname" nowrap> <em>x</em>, </td>
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<td class="md" nowrap align="right"></td>
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<td class="md" nowrap>int * </td>
<td class="mdname" nowrap> <em>y</em>, </td>
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<td class="md" nowrap>int * </td>
<td class="mdname" nowrap> <em>z</em></td>
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<td class="md">) </td>
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Returns the appropriate indexes for the child of this octree into which the box will fit.
<p>
<dl compact><dt><b>Remarks:</b></dt><dd>This is used by the OCtreeSceneManager to determine which child to traverse next when finding the appropriate octree to insert the box. Since it is a loose octree, only the center of the box is checked to determine the octant. </dd></dl>
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<a class="anchor" name="Ogre_1_1Octreea8" doxytag="Ogre::Octree::_getCullBounds" ></a><p>
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<td class="md" nowrap valign="top"> void Ogre::Octree::_getCullBounds </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="classOgre_1_1AxisAlignedBox.html">AxisAlignedBox</a> * </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
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Creates the <a class="el" href="classOgre_1_1AxisAlignedBox.html">AxisAlignedBox</a> used for culling this octree.
<p>
<dl compact><dt><b>Remarks:</b></dt><dd>Since it's a loose octree, the culling bounds can be different than the actual bounds of the octree. </dd></dl>
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<a class="anchor" name="Ogre_1_1Octreea6" doxytag="Ogre::Octree::_isTwiceSize" ></a><p>
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<td class="md" nowrap valign="top"> bool Ogre::Octree::_isTwiceSize </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="classOgre_1_1AxisAlignedBox.html">AxisAlignedBox</a> & </td>
<td class="mdname1" valign="top" nowrap> <em>box</em> </td>
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Determines if this octree is twice as big as the given box.
<p>
<dl compact><dt><b>Remarks:</b></dt><dd>This method is used by the <a class="el" href="classOgre_1_1OctreeSceneManager.html">OctreeSceneManager</a> to determine if the given box will fit into a child of this octree. </dd></dl>
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<a class="anchor" name="Ogre_1_1Octreeb0" doxytag="Ogre::Octree::_ref" ></a><p>
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<td class="md" nowrap valign="top"> void Ogre::Octree::_ref </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [protected]</code></td>
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Increments the overall node count of this octree and all it's parents.
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<p>
Definition at line <a class="el" href="OgreOctree_8h-source.html#l00135">135</a> of file <a class="el" href="OgreOctree_8h-source.html">OgreOctree.h</a>. </td>
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<a class="anchor" name="Ogre_1_1Octreea3" doxytag="Ogre::Octree::_removeNode" ></a><p>
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<td class="md" nowrap valign="top"> void Ogre::Octree::_removeNode </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="classOgre_1_1OctreeNode.html">OctreeNode</a> * </td>
<td class="mdname1" valign="top" nowrap> </td>
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Removes an <a class="el" href="classOgre_1_1Octree.html">Octree</a> scene node to this octree level.
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<a class="anchor" name="Ogre_1_1Octreeb1" doxytag="Ogre::Octree::_unref" ></a><p>
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<td class="md" nowrap valign="top"> void Ogre::Octree::_unref </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
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<td class="md" nowrap><code> [protected]</code></td>
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Decrements the overall node count of this octree and all it's parents.
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<p>
Definition at line <a class="el" href="OgreOctree_8h-source.html#l00144">144</a> of file <a class="el" href="OgreOctree_8h-source.html">OgreOctree.h</a>. </td>
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<a class="anchor" name="Ogre_1_1Octreea5" doxytag="Ogre::Octree::getWireBoundingBox" ></a><p>
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<td class="md" nowrap valign="top"> <a class="el" href="classOgre_1_1WireBoundingBox.html">WireBoundingBox</a>* Ogre::Octree::getWireBoundingBox </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
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Creats the wire frame bounding box for this octant.
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<a class="anchor" name="Ogre_1_1Octreea4" doxytag="Ogre::Octree::numNodes" ></a><p>
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<td class="md" nowrap valign="top"> int Ogre::Octree::numNodes </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
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Returns the number of scene nodes attached to this octree.
<p>
<p>
Definition at line <a class="el" href="OgreOctree_8h-source.html#l00078">78</a> of file <a class="el" href="OgreOctree_8h-source.html">OgreOctree.h</a>. </td>
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<hr><h2>Member Data Documentation</h2>
<a class="anchor" name="Ogre_1_1Octreeo0" doxytag="Ogre::Octree::mBox" ></a><p>
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<td class="md" nowrap valign="top"> <a class="el" href="classOgre_1_1AxisAlignedBox.html">AxisAlignedBox</a> <a class="el" href="classOgre_1_1Octree.html#Ogre_1_1Octreeo0">Ogre::Octree::mBox</a>
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<p>
The bounding box of the octree.
<p>
<dl compact><dt><b>Remarks:</b></dt><dd>This is used for octant index determination and rendering, but not culling </dd></dl>
<p>
Definition at line <a class="el" href="OgreOctree_8h-source.html#l00087">87</a> of file <a class="el" href="OgreOctree_8h-source.html">OgreOctree.h</a>. </td>
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<a class="anchor" name="Ogre_1_1Octreeo3" doxytag="Ogre::Octree::mChildren" ></a><p>
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<td class="md" nowrap valign="top"> <a class="el" href="classOgre_1_1Octree.html">Octree</a>* <a class="el" href="classOgre_1_1Octree.html#Ogre_1_1Octreeo3">Ogre::Octree::mChildren</a>[ 2 ][ 2 ][ 2 ]
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</td>
<td>
<p>
3D array of children of this octree.
<p>
<dl compact><dt><b>Remarks:</b></dt><dd>Children are dynamically created as needed when nodes are inserted in the <a class="el" href="classOgre_1_1Octree.html">Octree</a>. If, later, the all the nodes are removed from the child, it is still kept arround. </dd></dl>
<p>
Definition at line <a class="el" href="OgreOctree_8h-source.html#l00103">103</a> of file <a class="el" href="OgreOctree_8h-source.html">OgreOctree.h</a>. </td>
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<a class="anchor" name="Ogre_1_1Octreeo2" doxytag="Ogre::Octree::mHalfSize" ></a><p>
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<td class="md" nowrap valign="top"> <a class="el" href="classOgre_1_1Vector3.html">Vector3</a> <a class="el" href="classOgre_1_1Octree.html#Ogre_1_1Octreeo2">Ogre::Octree::mHalfSize</a>
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<td>
</td>
<td>
<p>
Vector containing the dimensions of this octree / 2.
<p>
<p>
Definition at line <a class="el" href="OgreOctree_8h-source.html#l00096">96</a> of file <a class="el" href="OgreOctree_8h-source.html">OgreOctree.h</a>. </td>
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<a class="anchor" name="Ogre_1_1Octreeo4" doxytag="Ogre::Octree::mNodes" ></a><p>
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<td class="md" nowrap valign="top"> <a class="el" href="namespaceOgre.html#a556">NodeList</a> <a class="el" href="classOgre_1_1Octree.html#Ogre_1_1Octreeo4">Ogre::Octree::mNodes</a>
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<td>
<p>
Public list of SceneNodes attached to this particular octree.
<p>
<p>
Definition at line <a class="el" href="OgreOctree_8h-source.html#l00129">129</a> of file <a class="el" href="OgreOctree_8h-source.html">OgreOctree.h</a>. </td>
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<a class="anchor" name="Ogre_1_1Octreep0" doxytag="Ogre::Octree::mNumNodes" ></a><p>
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<td class="md" nowrap valign="top"> int <a class="el" href="classOgre_1_1Octree.html#Ogre_1_1Octreep0">Ogre::Octree::mNumNodes</a><code> [protected]</code>
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</td>
<td>
<p>
number of SceneNodes in this octree and all it's children.
<p>
<p>
Definition at line <a class="el" href="OgreOctree_8h-source.html#l00152">152</a> of file <a class="el" href="OgreOctree_8h-source.html">OgreOctree.h</a>. </td>
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<a class="anchor" name="Ogre_1_1Octreep1" doxytag="Ogre::Octree::mParent" ></a><p>
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<td class="md" nowrap valign="top"> <a class="el" href="classOgre_1_1Octree.html">Octree</a>* <a class="el" href="classOgre_1_1Octree.html#Ogre_1_1Octreep1">Ogre::Octree::mParent</a><code> [protected]</code>
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<td>
</td>
<td>
<p>
parent octree
<p>
<p>
Definition at line <a class="el" href="OgreOctree_8h-source.html#l00155">155</a> of file <a class="el" href="OgreOctree_8h-source.html">OgreOctree.h</a>. </td>
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<a class="anchor" name="Ogre_1_1Octreeo1" doxytag="Ogre::Octree::mWireBoundingBox" ></a><p>
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<td class="md" nowrap valign="top"> <a class="el" href="classOgre_1_1WireBoundingBox.html">WireBoundingBox</a>* <a class="el" href="classOgre_1_1Octree.html#Ogre_1_1Octreeo1">Ogre::Octree::mWireBoundingBox</a>
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</td>
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<td>
</td>
<td>
<p>
<p>
Definition at line <a class="el" href="OgreOctree_8h-source.html#l00088">88</a> of file <a class="el" href="OgreOctree_8h-source.html">OgreOctree.h</a>. </td>
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<hr>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="OgreOctree_8h-source.html">OgreOctree.h</a></ul>
<p>
Copyright © 2000-2005 by The OGRE Team<br />
Last modified Wed Feb 23 00:25:45 2005
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