258 lines
12 KiB
HTML
258 lines
12 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<HTML>
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<TITLE>class SG_EXPORT osg::Viewport</TITLE>
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<META NAME="GENERATOR" CONTENT="DOC++ 3.4.8">
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<H2>class SG_EXPORT <A HREF="#DOC.DOCU">osg::Viewport</A></H2></H2><BLOCKQUOTE>Encapsulte OpenGL glViewport</BLOCKQUOTE>
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<HR>
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<H2>Inheritance:</H2>
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<APPLET CODE="ClassGraph.class" WIDTH=600 HEIGHT=125>
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<param name=classes value="CReferenced,MReferenced.html,CObject,MObject.html,CStateAttribute,MStateAttribute.html,CViewport,MViewport.html">
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<param name=before value="M,M,M,M">
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<param name=after value="Md_SPSP,Md_SP,Md_,M">
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<param name=indent value="0,1,2,3">
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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.2.111.1">Viewport</A></B>()
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif> <B><A HREF="#DOC.2.111.2">Viewport</A></B>(const <!1><A HREF="Viewport.html#DOC.2.111.2">Viewport</A>& vp, const <!1><A HREF="CopyOp.html">CopyOp</A>& copyop=CopyOp::SHALLOW_COPY)
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<DD><I>Copy constructor using CopyOp to manage deep vs shallow copy</I>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif> <B><A HREF="#DOC.2.111.3">META_StateAttribute</A></B>(<!1><A HREF="Viewport.html">Viewport</A>, <!1><A HREF="StateAttribute.html#DOC.2.92.6.36">VIEWPORT</A>)
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>virtual int <B><A HREF="#DOC.2.111.4">compare</A></B>(const <!1><A HREF="StateAttribute.html">StateAttribute</A>& sa) const
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<DD><I>return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs</I>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>inline void <B><A HREF="#DOC.2.111.5">setViewport</A></B>(const int <!1><A HREF="Viewport.html#DOC.2.111.7">x</A>, const int <!1><A HREF="Viewport.html#DOC.2.111.8">y</A>, const int <!1><A HREF="Viewport.html#DOC.2.111.9">width</A>, const int <!1><A HREF="Viewport.html#DOC.2.111.10">height</A>)
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>void <B><A HREF="#DOC.2.111.6">getViewport</A></B>(int& <!1><A HREF="Viewport.html#DOC.2.111.7">x</A>, int& <!1><A HREF="Viewport.html#DOC.2.111.8">y</A>, int& <!1><A HREF="Viewport.html#DOC.2.111.9">width</A>, int& <!1><A HREF="Viewport.html#DOC.2.111.10">height</A>)
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>inline const int <B><A HREF="#DOC.2.111.7">x</A></B>() const
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>inline const int <B><A HREF="#DOC.2.111.8">y</A></B>() const
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>inline const int <B><A HREF="#DOC.2.111.9">width</A></B>() const
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>inline const int <B><A HREF="#DOC.2.111.10">height</A></B>() const
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>inline const bool <B><A HREF="#DOC.2.111.11">valid</A></B>() const
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>inline const float <B><A HREF="#DOC.2.111.12">aspectRatio</A></B>() const
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<DD><I>Return the aspcetRatio of the viewport, which is equal to width/height.</I>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>inline const <!1><A HREF="Matrix.html">osg::Matrix</A> <B><A HREF="#DOC.2.111.13">computeWindowMatrix</A></B>() const
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<DD><I>Compute the Window Matrix which takes projected coords into Window coordinates.</I>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>virtual void <B><A HREF="#DOC.2.111.14">apply</A></B>(<!1><A HREF="State.html">State</A>& state) 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="[more]" BORDER=0 SRC=icon1.gif>int <B><A HREF="#DOC.2.111.16">_x</A></B>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>int <B><A HREF="#DOC.2.111.17">_y</A></B>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>int <B><A HREF="#DOC.2.111.18">_width</A></B>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>int <B><A HREF="#DOC.2.111.19">_height</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.2.111.15">~Viewport</A></B>()
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</DL></P>
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</DL>
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<HR><H3>Inherited from <A HREF="StateAttribute.html">StateAttribute</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>cloneType</B>() const
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<DT>
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<IMG ALT="o" SRC=icon2.gif>virtual <!1><A HREF="Object.html">Object</A>* <B>clone</B>(const <!1><A HREF="CopyOp.html">CopyOp</A>&) 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 const <!1><A HREF="StateAttribute.html#DOC.2.92.5">Type</A> <B>getType</B>() const
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<DT>
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<IMG ALT="o" SRC=icon2.gif>bool <B>operator < </B>(const <!1><A HREF="StateAttribute.html">StateAttribute</A>& rhs) const
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<DT>
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<IMG ALT="o" SRC=icon2.gif>bool <B>operator == </B>(const <!1><A HREF="StateAttribute.html">StateAttribute</A>& rhs) const
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<DT>
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<IMG ALT="o" SRC=icon2.gif>bool <B>operator != </B>(const <!1><A HREF="StateAttribute.html">StateAttribute</A>& rhs) const
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<DT>
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<IMG ALT="o" SRC=icon2.gif>virtual void <B>setStateSetModes</B>(<!1><A HREF="StateSet.html">StateSet</A>&, const <!1><A HREF="StateAttribute.html#DOC.2.92.2">GLModeValue</A>) const
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<DT>
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<IMG ALT="o" SRC=icon2.gif>virtual void <B>compile</B>(<!1><A HREF="State.html">State</A>&) const
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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 GLenum <B>GLMode</B>
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<DT>
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<IMG ALT="o" SRC=icon2.gif>typedef unsigned int <B>GLModeValue</B>
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<DT>
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<IMG ALT="o" SRC=icon2.gif>typedef unsigned int <B>OverrideValue</B>
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<DT>
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<IMG ALT="o" SRC=icon2.gif>enum <B>Values</B>
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<DT>
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<IMG ALT="o" SRC=icon2.gif>typedef unsigned int <B>Type</B>
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<DT>
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<IMG ALT="o" SRC=icon2.gif>enum <B>Types</B>
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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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<P><DL>
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<DT><H3>Public Methods</H3><DD><DT>
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<IMG ALT="o" SRC=icon2.gif>inline void <B>setDataVariance</B>(const <!1><A HREF="Object.html#DOC.2.74.7">DataVariance</A> dv)
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<DT>
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<IMG ALT="o" SRC=icon2.gif>inline const <!1><A HREF="Object.html#DOC.2.74.7">DataVariance</A> <B>getDataVariance</B>() const
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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>enum <B>DataVariance</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><!1><A HREF="Object.html#DOC.2.74.7">DataVariance</A> <B>_dataVariance</B>
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</DL></P>
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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 void <B>unref_nodelete</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>Encapsulte OpenGL glViewport</BLOCKQUOTE>
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<DL>
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<A NAME="Viewport"></A>
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<A NAME="DOC.2.111.1"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B> Viewport()</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="Viewport"></A>
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<A NAME="DOC.2.111.2"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B> Viewport(const <!1><A HREF="Viewport.html#DOC.2.111.2">Viewport</A>& vp, const <!1><A HREF="CopyOp.html">CopyOp</A>& copyop=CopyOp::SHALLOW_COPY)</B></TT>
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<DD>Copy constructor using CopyOp to manage deep vs shallow copy
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<DL><DT><DD></DL><P>
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<A NAME="META_StateAttribute"></A>
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<A NAME="DOC.2.111.3"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B> META_StateAttribute(<!1><A HREF="Viewport.html">Viewport</A>, <!1><A HREF="StateAttribute.html#DOC.2.92.6.36">VIEWPORT</A>)</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="compare"></A>
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<A NAME="DOC.2.111.4"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>virtual int compare(const <!1><A HREF="StateAttribute.html">StateAttribute</A>& sa) const </B></TT>
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<DD>return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs
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<DL><DT><DD></DL><P>
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<A NAME="setViewport"></A>
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<A NAME="DOC.2.111.5"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>inline void setViewport(const int <!1><A HREF="Viewport.html#DOC.2.111.7">x</A>, const int <!1><A HREF="Viewport.html#DOC.2.111.8">y</A>, const int <!1><A HREF="Viewport.html#DOC.2.111.9">width</A>, const int <!1><A HREF="Viewport.html#DOC.2.111.10">height</A>)</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="getViewport"></A>
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<A NAME="DOC.2.111.6"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>void getViewport(int& <!1><A HREF="Viewport.html#DOC.2.111.7">x</A>, int& <!1><A HREF="Viewport.html#DOC.2.111.8">y</A>, int& <!1><A HREF="Viewport.html#DOC.2.111.9">width</A>, int& <!1><A HREF="Viewport.html#DOC.2.111.10">height</A>)</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="x"></A>
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<A NAME="DOC.2.111.7"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>inline const int x() const </B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="y"></A>
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<A NAME="DOC.2.111.8"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>inline const int y() const </B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="width"></A>
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<A NAME="DOC.2.111.9"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>inline const int width() const </B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="height"></A>
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<A NAME="DOC.2.111.10"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>inline const int height() const </B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="valid"></A>
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<A NAME="DOC.2.111.11"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>inline const bool valid() const </B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="aspectRatio"></A>
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<A NAME="DOC.2.111.12"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>inline const float aspectRatio() const </B></TT>
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<DD>Return the aspcetRatio of the viewport, which is equal to width/height.
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If height is zero, the potental division by zero is avoid by simply returning 1.0f.
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<DL><DT><DD></DL><P>
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<A NAME="computeWindowMatrix"></A>
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<A NAME="DOC.2.111.13"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>inline const <!1><A HREF="Matrix.html">osg::Matrix</A> computeWindowMatrix() const </B></TT>
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<DD>Compute the Window Matrix which takes projected coords into Window coordinates.
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To converted local coodinates into window coordinates use v_window = v_local * MVPW matrix,
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where the MVPW matrix is ModelViewMatrix * ProjectionMatrix * WindowMatrix, the later supplied by
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viewport::computeWindowMatrix(), the ModelView and Projection Matrix can either be sourced from the
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curre osg::State object, via osgUtil::SceneView or CullVisitor.
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<DL><DT><DD></DL><P>
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<A NAME="apply"></A>
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<A NAME="DOC.2.111.14"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>virtual void apply(<!1><A HREF="State.html">State</A>& state) const </B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="~Viewport"></A>
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<A NAME="DOC.2.111.15"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>virtual ~Viewport()</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="_x"></A>
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<A NAME="DOC.2.111.16"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>int _x</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="_y"></A>
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<A NAME="DOC.2.111.17"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>int _y</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="_width"></A>
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<A NAME="DOC.2.111.18"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>int _width</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="_height"></A>
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<A NAME="DOC.2.111.19"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>int _height</B></TT>
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<DL><DT><DD></DL><P></DL>
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<HR><DL><DT><B>This class has no child classes.</B></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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<BR>
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This page was generated with the help of <A HREF="http://docpp.sourceforge.net">DOC++</A>.
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