322 lines
14 KiB
HTML
322 lines
14 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<HTML>
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<HEAD>
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<TITLE>class SG_EXPORT osg::LOD</TITLE>
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<META NAME="GENERATOR" CONTENT="DOC++ 3.4.8">
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</HEAD>
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<BODY BGCOLOR="#ffffff">
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<H2>class SG_EXPORT <A HREF="#DOC.DOCU">osg::LOD</A></H2></H2><BLOCKQUOTE>LOD - Level Of Detail group node which allows switching between children depending on distance from eye point.</BLOCKQUOTE>
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<HR>
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<H2>Inheritance:</H2>
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<APPLET CODE="ClassGraph.class" WIDTH=600 HEIGHT=185>
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<param name=classes value="CReferenced,MReferenced.html,CObject,MObject.html,CNode,MNode.html,CGroup,MGroup.html,CLOD,MLOD.html,CImpostor,MImpostor.html">
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<param name=before value="M,M,M,M,M,M^_">
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<param name=after value="Md_SPSPSP,Md_SPSP,Md_SP,Md_,M,M">
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<param name=indent value="0,1,2,3,4,4">
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<param name=arrowdir value="down">
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</APPLET>
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<HR>
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<DL>
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<P><DL>
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<DT><H3>Public Methods</H3><DD><DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif> <B><A HREF="#DOC.2.45.1">LOD</A></B>()
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif> <B><A HREF="#DOC.2.45.2">META_Node</A></B>(<!1><A HREF="LOD.html">LOD</A>)
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>virtual void <B><A HREF="#DOC.2.45.3">traverse</A></B>(<!1><A HREF="NodeVisitor.html">NodeVisitor</A>& nv)
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>void <B><A HREF="#DOC.2.45.4">setRange</A></B>(const unsigned int index, const float range)
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<DD><I>Sets the value of range list element index to range which is a floating point distance specified in world coordinates.</I>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>inline const float <B><A HREF="#DOC.2.45.5">getRange</A></B>(const unsigned int index) const
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<DD><I>returns the range for specified index</I>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>inline const int <B><A HREF="#DOC.2.45.6">getNumRanges</A></B>() const
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<DD><I>returns the number of ranges currently set</I>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>inline void <B><A HREF="#DOC.2.45.7">setCenter</A></B>(const <!1><A HREF="Vec3.html">Vec3</A> &<!1><A HREF="BoundingSphere.html#DOC.2.4.6">center</A>)
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<DD><I>Sets the object-space point which defines the center of the osg::LOD.</I>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>inline const <!1><A HREF="Vec3.html">Vec3</A>& <B><A HREF="#DOC.2.45.8">getCenter</A></B>() const
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<DD><I>return the LOD center point.</I>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>const int <B><A HREF="#DOC.2.45.9">evaluate</A></B>(const <!1><A HREF="Vec3.html">Vec3</A>& eye_local, const float bias=1.0f) const
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<DD><I>return the child to traverse.</I>
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</DL></P>
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<P><DL>
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<DT><H3>Protected Fields</H3><DD><DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>RangeList <B><A HREF="#DOC.2.45.12">_rangeList2</A></B>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif><!1><A HREF="Vec3.html">Vec3</A> <B><A HREF="#DOC.2.45.13">_center</A></B>
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</DL></P>
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<P><DL>
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<DT><H3>Protected Methods</H3><DD><DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>virtual <B><A HREF="#DOC.2.45.10">~LOD</A></B>()
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</DL></P>
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<P><DL>
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<DT><H3>Protected Members</H3><DD><DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>typedef std::vector<float> RangeList RangeList <B><A HREF="#DOC.2.45.11">_rangeList</A></B>
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</DL></P>
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</DL>
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<HR><H3>Inherited from <A HREF="Group.html">Group</A>:</H3>
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<DL>
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<P><DL>
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<DT><H3>Public Methods</H3><DD><DT>
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<IMG ALT="o" SRC=icon2.gif>virtual bool <B>addChild</B>( <!1><A HREF="Node.html">Node</A>* child )
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<DT>
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<IMG ALT="o" SRC=icon2.gif>virtual bool <B>removeChild</B>( <!1><A HREF="Node.html">Node</A>* child )
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<DT>
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<IMG ALT="o" SRC=icon2.gif>virtual bool <B>replaceChild</B>( <!1><A HREF="Node.html">Node</A>* origChild, <!1><A HREF="Node.html">Node</A>* newChild )
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline const int <B>getNumChildren</B>() const
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline <!1><A HREF="Node.html">Node</A>* <B>getChild</B>( const int i )
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline const <!1><A HREF="Node.html">Node</A>* <B>getChild</B>( const int i ) const
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline bool <B>containsNode</B>( const <!1><A HREF="Node.html">Node</A>* node ) const
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline ChildList::iterator <B>findNode</B>( const <!1><A HREF="Node.html">Node</A>* node )
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline ChildList::const_iterator <B>findNode</B>( const <!1><A HREF="Node.html">Node</A>* node ) const
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</DL></P>
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<P><DL>
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<DT><H3>Protected Fields</H3><DD><DT>
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<IMG ALT="o" SRC=icon2.gif>ChildList <B>_children</B>
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</DL></P>
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<P><DL>
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<DT><H3>Protected Methods</H3><DD><DT>
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<IMG ALT="o" SRC=icon2.gif>virtual const bool <B>computeBound</B>() const
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</DL></P>
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</DL>
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<HR><H3>Inherited from <A HREF="Node.html">Node</A>:</H3>
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<DL>
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<P><DL>
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<DT><H3>Public Methods</H3><DD><DT>
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<IMG ALT="o" SRC=icon2.gif>virtual <!1><A HREF="Object.html">Object</A>* <B>clone</B>() const
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<DT>
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<IMG ALT="o" SRC=icon2.gif>virtual bool <B>isSameKindAs</B>(const <!1><A HREF="Object.html">Object</A>* obj) const
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<DT>
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<IMG ALT="o" SRC=icon2.gif>virtual const char* <B>className</B>() const
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<DT>
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<IMG ALT="o" SRC=icon2.gif>virtual void <B>accept</B>(<!1><A HREF="NodeVisitor.html">NodeVisitor</A>& nv)
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<DT>
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<IMG ALT="o" SRC=icon2.gif>virtual void <B>ascend</B>(<!1><A HREF="NodeVisitor.html">NodeVisitor</A>& nv)
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline void <B>setName</B>( const std::string& name )
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline void <B>setName</B>( const char* name )
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline const std::string& <B>getName</B>() const
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline const <!1><A HREF="Node.html#DOC.2.54.11">ParentList</A>& <B>getParents</B>() const
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline <!1><A HREF="Group.html">Group</A>* <B>getParent</B>(const int i)
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline const <!1><A HREF="Group.html">Group</A>* <B>getParent</B>(const int i) const
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline const int <B>getNumParents</B>() const
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<DT>
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<IMG ALT="o" SRC=icon2.gif>void <B>setAppCallback</B>(<!1><A HREF="NodeCallback.html">NodeCallback</A>* nc)
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline <!1><A HREF="NodeCallback.html">NodeCallback</A>* <B>getAppCallback</B>()
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline const <!1><A HREF="NodeCallback.html">NodeCallback</A>* <B>getAppCallback</B>() const
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline const int <B>getNumChildrenRequiringAppTraversal</B>() const
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline void <B>setUserData</B>(void* <!1><A HREF="Image.html#DOC.2.36.15">data</A>, <!1><A HREF="MemoryAdapter.html">MemoryAdapter</A>* ma=0L)
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline void* <B>getUserData</B>()
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline const void* <B>getUserData</B>() const
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline <!1><A HREF="MemoryAdapter.html">MemoryAdapter</A>* <B>getMemoryAdapter</B>()
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline const <!1><A HREF="MemoryAdapter.html">MemoryAdapter</A>* <B>getMemoryAdapter</B>() const
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline void <B>setNodeMask</B>(const NodeMask nm)
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline const NodeMask <B>getNodeMask</B>() const
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline const <!1><A HREF="Node.html#DOC.2.54.27">DescriptionList</A>& <B>getDescriptions</B>() const
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline <!1><A HREF="Node.html#DOC.2.54.27">DescriptionList</A>& <B>getDescriptions</B>()
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline const std::string& <B>getDescription</B>(const int i) const
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline std::string& <B>getDescription</B>(const int i)
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline const int <B>getNumDescriptions</B>() const
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<DT>
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<IMG ALT="o" SRC=icon2.gif>void <B>addDescription</B>(const std::string& desc)
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline void <B>setStateSet</B>(<!1><A HREF="StateSet.html">osg::StateSet</A>* dstate)
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline <!1><A HREF="StateSet.html">osg::StateSet</A>* <B>getStateSet</B>()
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline const <!1><A HREF="StateSet.html">osg::StateSet</A>* <B>getStateSet</B>() const
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline const <!1><A HREF="BoundingSphere.html">BoundingSphere</A>& <B>getBound</B>() const
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<DT>
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<IMG ALT="o" SRC=icon2.gif>void <B>dirtyBound</B>()
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</DL></P>
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<P><DL>
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<DT><H3>Public Members</H3><DD><DT>
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<IMG ALT="o" SRC=icon2.gif>typedef std::vector<<!1><A HREF="Group.html">Group</A>*> <B>ParentList</B>
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<DT>
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<IMG ALT="o" SRC=icon2.gif>typedef std::vector<std::string> <B>DescriptionList</B>
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</DL></P>
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<P><DL>
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<DT><H3>Protected Fields</H3><DD><DT>
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<IMG ALT="o" SRC=icon2.gif>mutable <!1><A HREF="BoundingSphere.html">BoundingSphere</A> <B>_bsphere</B>
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<DT>
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<IMG ALT="o" SRC=icon2.gif>mutable bool <B>_bsphere_computed</B>
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<DT>
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<IMG ALT="o" SRC=icon2.gif>std::string <B>_name</B>
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<DT>
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<IMG ALT="o" SRC=icon2.gif><!1><A HREF="Node.html#DOC.2.54.11">ParentList</A> <B>_parents</B>
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<DT>
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<IMG ALT="o" SRC=icon2.gif><!1><A HREF="ref_ptr.html">ref_ptr</A><<!1><A HREF="NodeCallback.html">NodeCallback</A>> <B>_appCallback</B>
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<DT>
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<IMG ALT="o" SRC=icon2.gif>int <B>_numChildrenRequiringAppTraversal</B>
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<DT>
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<IMG ALT="o" SRC=icon2.gif>void* <B>_userData</B>
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<DT>
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<IMG ALT="o" SRC=icon2.gif><!1><A HREF="ref_ptr.html">ref_ptr</A><<!1><A HREF="MemoryAdapter.html">MemoryAdapter</A>> <B>_memoryAdapter</B>
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<DT>
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<IMG ALT="o" SRC=icon2.gif>NodeMask <B>_nodeMask</B>
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<DT>
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<IMG ALT="o" SRC=icon2.gif><!1><A HREF="Node.html#DOC.2.54.27">DescriptionList</A> <B>_descriptions</B>
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<DT>
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<IMG ALT="o" SRC=icon2.gif><!1><A HREF="ref_ptr.html">ref_ptr</A><<!1><A HREF="StateSet.html">StateSet</A>> <B>_dstate</B>
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</DL></P>
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<P><DL>
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<DT><H3>Protected Methods</H3><DD><DT>
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<IMG ALT="o" SRC=icon2.gif>void <B>setNumChildrenRequiringAppTraversal</B>(const int num)
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</DL></P>
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</DL>
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<HR><H3>Inherited from <A HREF="Object.html">Object</A>:</H3>
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<DL>
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</DL>
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<HR><H3>Inherited from <A HREF="Referenced.html">Referenced</A>:</H3>
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<DL>
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<P><DL>
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<DT><H3>Public Methods</H3><DD><DT>
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<IMG ALT="o" SRC=icon2.gif>inline <!1><A HREF="Referenced.html">Referenced</A>& <B>operator = </B>(<!1><A HREF="Referenced.html">Referenced</A>&)
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline void <B>ref</B>() const
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline void <B>unref</B>() const
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline const int <B>referenceCount</B>() const
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</DL></P>
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<P><DL>
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<DT><H3>Protected Fields</H3><DD><DT>
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<IMG ALT="o" SRC=icon2.gif>mutable int <B>_refCount</B>
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</DL></P>
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</DL>
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<A NAME="DOC.DOCU"></A>
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<HR>
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<H2>Documentation</H2>
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<BLOCKQUOTE>LOD - Level Of Detail group node which allows switching between children
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depending on distance from eye point.
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Typical uses are for load balancing - objects further away from
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the eye point are rendered at a lower level of detail, and at times
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of high stress on the graphics pipeline lower levels of detail can
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also be chosen.</BLOCKQUOTE>
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<DL>
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<A NAME="LOD"></A>
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<A NAME="DOC.2.45.1"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B> LOD()</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="META_Node"></A>
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<A NAME="DOC.2.45.2"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B> META_Node(<!1><A HREF="LOD.html">LOD</A>)</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="traverse"></A>
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<A NAME="DOC.2.45.3"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>virtual void traverse(<!1><A HREF="NodeVisitor.html">NodeVisitor</A>& nv)</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="setRange"></A>
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<A NAME="DOC.2.45.4"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>void setRange(const unsigned int index, const float range)</B></TT>
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<DD>Sets the value of range list element index to range which
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is a floating point distance specified in world coordinates.
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Range list automatically expands to accomodate values beyond
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the current getNumRanges().
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<DL><DT><DD></DL><P>
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<A NAME="getRange"></A>
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<A NAME="DOC.2.45.5"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>inline const float getRange(const unsigned int index) const </B></TT>
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<DD>returns the range for specified index
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<DL><DT><DD></DL><P>
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<A NAME="getNumRanges"></A>
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<A NAME="DOC.2.45.6"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>inline const int getNumRanges() const </B></TT>
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<DD>returns the number of ranges currently set
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<DL><DT><DD></DL><P>
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<A NAME="setCenter"></A>
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<A NAME="DOC.2.45.7"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>inline void setCenter(const <!1><A HREF="Vec3.html">Vec3</A> &<!1><A HREF="BoundingSphere.html#DOC.2.4.6">center</A>)</B></TT>
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<DD>Sets the object-space point which defines the center of the osg::LOD.
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center is affected by any transforms in the hierarchy above the osg::LOD.
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<DL><DT><DD></DL><P>
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<A NAME="getCenter"></A>
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<A NAME="DOC.2.45.8"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>inline const <!1><A HREF="Vec3.html">Vec3</A>& getCenter() const </B></TT>
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<DD>return the LOD center point.
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<DL><DT><DD></DL><P>
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<A NAME="evaluate"></A>
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<A NAME="DOC.2.45.9"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>const int evaluate(const <!1><A HREF="Vec3.html">Vec3</A>& eye_local, const float bias=1.0f) const </B></TT>
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<DD>return the child to traverse.
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Selected by the distance between the eye point in local
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coordinates and the LOD center, mutliplied by the bias.
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<DL><DT><DD></DL><P>
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<A NAME="~LOD"></A>
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<A NAME="DOC.2.45.10"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>virtual ~LOD()</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="_rangeList"></A>
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<A NAME="DOC.2.45.11"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>typedef std::vector<float> RangeList RangeList _rangeList</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="_rangeList2"></A>
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<A NAME="DOC.2.45.12"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>RangeList _rangeList2</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="_center"></A>
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<A NAME="DOC.2.45.13"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B><!1><A HREF="Vec3.html">Vec3</A> _center</B></TT>
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<DL><DT><DD></DL><P></DL>
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<HR>
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<DL><DT><B>Direct child classes:
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</B><DD><A HREF="Impostor.html">Impostor</A><BR>
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</DL>
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<DL><DT><DD></DL><P><P><I><A HREF="index.html">Alphabetic index</A></I> <I><A HREF="HIER.html">HTML hierarchy of classes</A> or <A HREF="HIERjava.html">Java</A></I></P><HR>
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