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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="glVertex">
<refmeta>
<refmetainfo>
<copyright>
<year>1991-2006</year>
<holder>Silicon Graphics, Inc.</holder>
</copyright>
</refmetainfo>
<refentrytitle>glVertex</refentrytitle>
<manvolnum>3G</manvolnum>
</refmeta>
<refnamediv>
<refname>glVertex</refname>
<refpurpose>specify a vertex</refpurpose>
</refnamediv>
<refsynopsisdiv><title>C Specification</title>
<funcsynopsis>
<funcprototype>
<funcdef>void <function>glVertex2s</function></funcdef>
<paramdef>GLshort <parameter>x</parameter></paramdef>
<paramdef>GLshort <parameter>y</parameter></paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis>
<funcprototype>
<funcdef>void <function>glVertex2i</function></funcdef>
<paramdef>GLint <parameter>x</parameter></paramdef>
<paramdef>GLint <parameter>y</parameter></paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis>
<funcprototype>
<funcdef>void <function>glVertex2f</function></funcdef>
<paramdef>GLfloat <parameter>x</parameter></paramdef>
<paramdef>GLfloat <parameter>y</parameter></paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis>
<funcprototype>
<funcdef>void <function>glVertex2d</function></funcdef>
<paramdef>GLdouble <parameter>x</parameter></paramdef>
<paramdef>GLdouble <parameter>y</parameter></paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis>
<funcprototype>
<funcdef>void <function>glVertex3s</function></funcdef>
<paramdef>GLshort <parameter>x</parameter></paramdef>
<paramdef>GLshort <parameter>y</parameter></paramdef>
<paramdef>GLshort <parameter>z</parameter></paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis>
<funcprototype>
<funcdef>void <function>glVertex3i</function></funcdef>
<paramdef>GLint <parameter>x</parameter></paramdef>
<paramdef>GLint <parameter>y</parameter></paramdef>
<paramdef>GLint <parameter>z</parameter></paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis>
<funcprototype>
<funcdef>void <function>glVertex3f</function></funcdef>
<paramdef>GLfloat <parameter>x</parameter></paramdef>
<paramdef>GLfloat <parameter>y</parameter></paramdef>
<paramdef>GLfloat <parameter>z</parameter></paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis>
<funcprototype>
<funcdef>void <function>glVertex3d</function></funcdef>
<paramdef>GLdouble <parameter>x</parameter></paramdef>
<paramdef>GLdouble <parameter>y</parameter></paramdef>
<paramdef>GLdouble <parameter>z</parameter></paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis>
<funcprototype>
<funcdef>void <function>glVertex4s</function></funcdef>
<paramdef>GLshort <parameter>x</parameter></paramdef>
<paramdef>GLshort <parameter>y</parameter></paramdef>
<paramdef>GLshort <parameter>z</parameter></paramdef>
<paramdef>GLshort <parameter>w</parameter></paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis>
<funcprototype>
<funcdef>void <function>glVertex4i</function></funcdef>
<paramdef>GLint <parameter>x</parameter></paramdef>
<paramdef>GLint <parameter>y</parameter></paramdef>
<paramdef>GLint <parameter>z</parameter></paramdef>
<paramdef>GLint <parameter>w</parameter></paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis>
<funcprototype>
<funcdef>void <function>glVertex4f</function></funcdef>
<paramdef>GLfloat <parameter>x</parameter></paramdef>
<paramdef>GLfloat <parameter>y</parameter></paramdef>
<paramdef>GLfloat <parameter>z</parameter></paramdef>
<paramdef>GLfloat <parameter>w</parameter></paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis>
<funcprototype>
<funcdef>void <function>glVertex4d</function></funcdef>
<paramdef>GLdouble <parameter>x</parameter></paramdef>
<paramdef>GLdouble <parameter>y</parameter></paramdef>
<paramdef>GLdouble <parameter>z</parameter></paramdef>
<paramdef>GLdouble <parameter>w</parameter></paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="parameters"><title>Parameters</title>
<variablelist>
<varlistentry>
<term><parameter>x</parameter></term>
<term><parameter>y</parameter></term>
<term><parameter>z</parameter></term>
<term><parameter>w</parameter></term>
<listitem>
<para>
Specify <emphasis>x</emphasis>, <emphasis>y</emphasis>, <emphasis>z</emphasis>, and <emphasis>w</emphasis> coordinates of a vertex.
Not all parameters are present in all forms of the command.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsynopsisdiv><title>C Specification</title>
<funcsynopsis>
<funcprototype>
<funcdef>void <function>glVertex2sv</function></funcdef>
<paramdef>const GLshort * <parameter>v</parameter></paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis>
<funcprototype>
<funcdef>void <function>glVertex2iv</function></funcdef>
<paramdef>const GLint * <parameter>v</parameter></paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis>
<funcprototype>
<funcdef>void <function>glVertex2fv</function></funcdef>
<paramdef>const GLfloat * <parameter>v</parameter></paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis>
<funcprototype>
<funcdef>void <function>glVertex2dv</function></funcdef>
<paramdef>const GLdouble * <parameter>v</parameter></paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis>
<funcprototype>
<funcdef>void <function>glVertex3sv</function></funcdef>
<paramdef>const GLshort * <parameter>v</parameter></paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis>
<funcprototype>
<funcdef>void <function>glVertex3iv</function></funcdef>
<paramdef>const GLint * <parameter>v</parameter></paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis>
<funcprototype>
<funcdef>void <function>glVertex3fv</function></funcdef>
<paramdef>const GLfloat * <parameter>v</parameter></paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis>
<funcprototype>
<funcdef>void <function>glVertex3dv</function></funcdef>
<paramdef>const GLdouble * <parameter>v</parameter></paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis>
<funcprototype>
<funcdef>void <function>glVertex4sv</function></funcdef>
<paramdef>const GLshort * <parameter>v</parameter></paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis>
<funcprototype>
<funcdef>void <function>glVertex4iv</function></funcdef>
<paramdef>const GLint * <parameter>v</parameter></paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis>
<funcprototype>
<funcdef>void <function>glVertex4fv</function></funcdef>
<paramdef>const GLfloat * <parameter>v</parameter></paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis>
<funcprototype>
<funcdef>void <function>glVertex4dv</function></funcdef>
<paramdef>const GLdouble * <parameter>v</parameter></paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="parameters2"><title>Parameters</title>
<variablelist>
<varlistentry>
<term><parameter>v</parameter></term>
<listitem>
<para>
Specifies a pointer to an array of two, three, or four elements.
The elements of a two-element array are
<inlineequation><mml:math><mml:mi mathvariant="italic">x</mml:mi></mml:math></inlineequation>
and
<inlineequation><mml:math><mml:mi mathvariant="italic">y</mml:mi></mml:math></inlineequation>;
of a three-element array,
<inlineequation><mml:math><mml:mi mathvariant="italic">x</mml:mi></mml:math></inlineequation>,
<inlineequation><mml:math><mml:mi mathvariant="italic">y</mml:mi></mml:math></inlineequation>,
and
<inlineequation><mml:math><mml:mi mathvariant="italic">z</mml:mi></mml:math></inlineequation>;
and of a four-element array,
<inlineequation><mml:math><mml:mi mathvariant="italic">x</mml:mi></mml:math></inlineequation>,
<inlineequation><mml:math><mml:mi mathvariant="italic">y</mml:mi></mml:math></inlineequation>,
<inlineequation><mml:math><mml:mi mathvariant="italic">z</mml:mi></mml:math></inlineequation>,
and
<inlineequation><mml:math><mml:mi mathvariant="italic">w</mml:mi></mml:math></inlineequation>.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 id="description"><title>Description</title>
<para>
<function>glVertex</function> commands are used within <citerefentry><refentrytitle>glBegin</refentrytitle></citerefentry>/<citerefentry><refentrytitle>glEnd</refentrytitle></citerefentry> pairs to specify
point, line, and polygon vertices. The current color, normal, texture
coordinates, and fog coordinate are associated with the vertex when <function>glVertex</function>
is called.
</para>
<para>
When only
<inlineequation><mml:math><mml:mi mathvariant="italic">x</mml:mi></mml:math></inlineequation>
and
<inlineequation><mml:math><mml:mi mathvariant="italic">y</mml:mi></mml:math></inlineequation>
are specified,
<inlineequation><mml:math><mml:mi mathvariant="italic">z</mml:mi></mml:math></inlineequation>
defaults to 0 and
<inlineequation><mml:math><mml:mi mathvariant="italic">w</mml:mi></mml:math></inlineequation>
defaults to 1. When
<inlineequation><mml:math><mml:mi mathvariant="italic">x</mml:mi></mml:math></inlineequation>,
<inlineequation><mml:math><mml:mi mathvariant="italic">y</mml:mi></mml:math></inlineequation>,
and
<inlineequation><mml:math><mml:mi mathvariant="italic">z</mml:mi></mml:math></inlineequation>
are specified,
<inlineequation><mml:math><mml:mi mathvariant="italic">w</mml:mi></mml:math></inlineequation>
defaults to 1.
</para>
</refsect1>
<refsect1 id="notes"><title>Notes</title>
<para>
Invoking <function>glVertex</function> outside of a <citerefentry><refentrytitle>glBegin</refentrytitle></citerefentry>/<citerefentry><refentrytitle>glEnd</refentrytitle></citerefentry> pair
results in undefined behavior.
</para>
</refsect1>
<refsect1 id="seealso"><title>See Also</title>
<para>
<citerefentry><refentrytitle>glBegin</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glCallList</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glColor</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glEdgeFlag</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glEvalCoord</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glFogCoord</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glIndex</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glMaterial</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glMultiTexCoord</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glNormal</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glRect</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glTexCoord</refentrytitle></citerefentry>,
<citerefentry><refentrytitle>glVertexPointer</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>