Opentk/Source/Bind/Specifications/Docs/gluOrtho2D.xml
2009-03-08 00:46:58 +00:00

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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN"
"http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd">
<refentry id="gluOrtho2D">
<refmeta>
<refmetainfo>
<copyright>
<year>1991-2006</year>
<holder>Silicon Graphics, Inc.</holder>
</copyright>
</refmetainfo>
<refentrytitle>gluOrtho2D</refentrytitle>
<manvolnum>3G</manvolnum>
</refmeta>
<refnamediv>
<refname>gluOrtho2D</refname>
<refpurpose>define a 2D orthographic projection matrix</refpurpose>
</refnamediv>
<refsynopsisdiv><title>C Specification</title>
<funcsynopsis>
<funcprototype>
<funcdef>void <function>gluOrtho2D</function></funcdef>
<paramdef>GLdouble <parameter>left</parameter></paramdef>
<paramdef>GLdouble <parameter>right</parameter></paramdef>
<paramdef>GLdouble <parameter>bottom</parameter></paramdef>
<paramdef>GLdouble <parameter>top</parameter></paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<!-- eqn: ignoring delim $$ -->
<refsect1 id="parameters"><title>Parameters</title>
<variablelist>
<varlistentry>
<term><parameter>left</parameter></term>
<term><parameter>right</parameter></term>
<listitem>
<para>
Specify the coordinates for the left and right vertical clipping planes.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>bottom</parameter></term>
<term><parameter>top</parameter></term>
<listitem>
<para>
Specify the coordinates for the bottom and top horizontal clipping planes.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 id="description"><title>Description</title>
<para>
<function>gluOrtho2D</function> sets up a two-dimensional orthographic viewing region.
This is equivalent to calling <citerefentry><refentrytitle>glOrtho</refentrytitle></citerefentry> with
<inlineequation><mml:math>
<!-- eqn: near = -1:-->
<mml:mrow>
<mml:mi mathvariant="italic">near</mml:mi>
<mml:mo>=</mml:mo>
<mml:mn>-1</mml:mn>
</mml:mrow>
</mml:math></inlineequation>
and
<inlineequation><mml:math>
<!-- eqn: far = 1:-->
<mml:mrow>
<mml:mi mathvariant="italic">far</mml:mi>
<mml:mo>=</mml:mo>
<mml:mn>1</mml:mn>
</mml:mrow>
</mml:math></inlineequation>.
</para>
</refsect1>
<refsect1 id="seealso"><title>See Also</title>
<para>
<citerefentry><refentrytitle>glOrtho</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>gluPerspective</refentrytitle></citerefentry>
</para>
</refsect1>
<refsect1 id="Copyright"><title>Copyright</title>
<para>
Copyright <trademark class="copyright"></trademark> 1991-2006
Silicon Graphics, Inc. This document is licensed under the SGI
Free Software B License. For details, see
<ulink url="http://oss.sgi.com/projects/FreeB/">http://oss.sgi.com/projects/FreeB/</ulink>.
</para>
</refsect1>
</refentry>