mirror of
https://github.com/Ryujinx/Opentk.git
synced 2024-12-28 20:35:36 +00:00
201 lines
8.5 KiB
XML
201 lines
8.5 KiB
XML
|
<?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="glRect">
|
||
|
|
<refmeta>
|
||
|
|
<refmetainfo>
|
||
|
|
<copyright>
|
||
|
|
<year>1991-2006</year>
|
||
|
|
<holder>Silicon Graphics, Inc.</holder>
|
||
|
|
</copyright>
|
||
|
|
</refmetainfo>
|
||
|
|
<refentrytitle>glRect</refentrytitle>
|
||
|
|
<manvolnum>3G</manvolnum>
|
||
|
|
</refmeta>
|
||
|
|
<refnamediv>
|
||
|
|
<refname>glRect</refname>
|
||
|
|
<refpurpose>draw a rectangle</refpurpose>
|
||
|
|
</refnamediv>
|
||
|
|
<refsynopsisdiv><title>C Specification</title>
|
||
|
|
<funcsynopsis>
|
||
|
|
<funcprototype>
|
||
|
|
<funcdef>void <function>glRectd</function></funcdef>
|
||
|
|
<paramdef>GLdouble <parameter>x1</parameter></paramdef>
|
||
|
|
<paramdef>GLdouble <parameter>y1</parameter></paramdef>
|
||
|
|
<paramdef>GLdouble <parameter>x2</parameter></paramdef>
|
||
|
|
<paramdef>GLdouble <parameter>y2</parameter></paramdef>
|
||
|
|
</funcprototype>
|
||
|
|
</funcsynopsis>
|
||
|
|
<funcsynopsis>
|
||
|
|
<funcprototype>
|
||
|
|
<funcdef>void <function>glRectf</function></funcdef>
|
||
|
|
<paramdef>GLfloat <parameter>x1</parameter></paramdef>
|
||
|
|
<paramdef>GLfloat <parameter>y1</parameter></paramdef>
|
||
|
|
<paramdef>GLfloat <parameter>x2</parameter></paramdef>
|
||
|
|
<paramdef>GLfloat <parameter>y2</parameter></paramdef>
|
||
|
|
</funcprototype>
|
||
|
|
</funcsynopsis>
|
||
|
|
<funcsynopsis>
|
||
|
|
<funcprototype>
|
||
|
|
<funcdef>void <function>glRecti</function></funcdef>
|
||
|
|
<paramdef>GLint <parameter>x1</parameter></paramdef>
|
||
|
|
<paramdef>GLint <parameter>y1</parameter></paramdef>
|
||
|
|
<paramdef>GLint <parameter>x2</parameter></paramdef>
|
||
|
|
<paramdef>GLint <parameter>y2</parameter></paramdef>
|
||
|
|
</funcprototype>
|
||
|
|
</funcsynopsis>
|
||
|
|
<funcsynopsis>
|
||
|
|
<funcprototype>
|
||
|
|
<funcdef>void <function>glRects</function></funcdef>
|
||
|
|
<paramdef>GLshort <parameter>x1</parameter></paramdef>
|
||
|
|
<paramdef>GLshort <parameter>y1</parameter></paramdef>
|
||
|
|
<paramdef>GLshort <parameter>x2</parameter></paramdef>
|
||
|
|
<paramdef>GLshort <parameter>y2</parameter></paramdef>
|
||
|
|
</funcprototype>
|
||
|
|
</funcsynopsis>
|
||
|
|
</refsynopsisdiv>
|
||
|
|
<refsect1 id="parameters"><title>Parameters</title>
|
||
|
|
<variablelist>
|
||
|
|
<varlistentry>
|
||
|
|
<term><parameter>x1</parameter></term>
|
||
|
|
<term><parameter>y1</parameter></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
Specify one vertex of a rectangle.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><parameter>x2</parameter></term>
|
||
|
|
<term><parameter>y2</parameter></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
Specify the opposite vertex of the rectangle.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
</variablelist>
|
||
|
|
</refsect1>
|
||
|
|
<refsynopsisdiv><title>C Specification</title>
|
||
|
|
<funcsynopsis>
|
||
|
|
<funcprototype>
|
||
|
|
<funcdef>void <function>glRectdv</function></funcdef>
|
||
|
|
<paramdef>const GLdouble * <parameter>v1</parameter></paramdef>
|
||
|
|
<paramdef>const GLdouble * <parameter>v2</parameter></paramdef>
|
||
|
|
</funcprototype>
|
||
|
|
</funcsynopsis>
|
||
|
|
<funcsynopsis>
|
||
|
|
<funcprototype>
|
||
|
|
<funcdef>void <function>glRectfv</function></funcdef>
|
||
|
|
<paramdef>const GLfloat * <parameter>v1</parameter></paramdef>
|
||
|
|
<paramdef>const GLfloat * <parameter>v2</parameter></paramdef>
|
||
|
|
</funcprototype>
|
||
|
|
</funcsynopsis>
|
||
|
|
<funcsynopsis>
|
||
|
|
<funcprototype>
|
||
|
|
<funcdef>void <function>glRectiv</function></funcdef>
|
||
|
|
<paramdef>const GLint * <parameter>v1</parameter></paramdef>
|
||
|
|
<paramdef>const GLint * <parameter>v2</parameter></paramdef>
|
||
|
|
</funcprototype>
|
||
|
|
</funcsynopsis>
|
||
|
|
<funcsynopsis>
|
||
|
|
<funcprototype>
|
||
|
|
<funcdef>void <function>glRectsv</function></funcdef>
|
||
|
|
<paramdef>const GLshort * <parameter>v1</parameter></paramdef>
|
||
|
|
<paramdef>const GLshort * <parameter>v2</parameter></paramdef>
|
||
|
|
</funcprototype>
|
||
|
|
</funcsynopsis>
|
||
|
|
</refsynopsisdiv>
|
||
|
|
<refsect1 id="parameters2"><title>Parameters</title>
|
||
|
|
<variablelist>
|
||
|
|
<varlistentry>
|
||
|
|
<term><parameter>v1</parameter></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
Specifies a pointer to one vertex of a rectangle.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><parameter>v2</parameter></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
Specifies a pointer to the opposite vertex of the rectangle.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
</variablelist>
|
||
|
|
</refsect1>
|
||
|
|
<refsect1 id="description"><title>Description</title>
|
||
|
|
<para>
|
||
|
|
<function>glRect</function> supports efficient specification of rectangles as two corner points.
|
||
|
|
Each
|
||
|
|
rectangle command takes four arguments,
|
||
|
|
organized either as two consecutive pairs of
|
||
|
|
<inlineequation><mml:math>
|
||
|
|
<!-- eqn: (x,y):-->
|
||
|
|
<mml:mfenced open="(" close=")">
|
||
|
|
<mml:mi mathvariant="italic">x</mml:mi>
|
||
|
|
<mml:mi mathvariant="italic">y</mml:mi>
|
||
|
|
</mml:mfenced>
|
||
|
|
</mml:math></inlineequation>
|
||
|
|
coordinates
|
||
|
|
or as two pointers to arrays,
|
||
|
|
each containing an
|
||
|
|
<inlineequation><mml:math>
|
||
|
|
<!-- eqn: (x,y):-->
|
||
|
|
<mml:mfenced open="(" close=")">
|
||
|
|
<mml:mi mathvariant="italic">x</mml:mi>
|
||
|
|
<mml:mi mathvariant="italic">y</mml:mi>
|
||
|
|
</mml:mfenced>
|
||
|
|
</mml:math></inlineequation>
|
||
|
|
pair.
|
||
|
|
The resulting rectangle is defined in the
|
||
|
|
<inlineequation><mml:math>
|
||
|
|
<!-- eqn: z = 0:-->
|
||
|
|
<mml:mrow>
|
||
|
|
<mml:mi mathvariant="italic">z</mml:mi>
|
||
|
|
<mml:mo>=</mml:mo>
|
||
|
|
<mml:mn>0</mml:mn>
|
||
|
|
</mml:mrow>
|
||
|
|
</mml:math></inlineequation>
|
||
|
|
plane.
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<function>glRect</function>(<parameter>x1</parameter>, <parameter>y1</parameter>, <parameter>x2</parameter>, <parameter>y2</parameter>)
|
||
|
|
is exactly equivalent to the following sequence:
|
||
|
|
<programlisting>
|
||
|
|
glBegin(<constant>GL_POLYGON</constant>);
|
||
|
|
glVertex2(<parameter>x1</parameter>, <parameter>y1</parameter>);
|
||
|
|
glVertex2(<parameter>x2</parameter>, <parameter>y1</parameter>);
|
||
|
|
glVertex2(<parameter>x2</parameter>, <parameter>y2</parameter>);
|
||
|
|
glVertex2(<parameter>x1</parameter>, <parameter>y2</parameter>);
|
||
|
|
glEnd();
|
||
|
|
</programlisting>
|
||
|
|
Note that if the second vertex is above and to the right of the first vertex,
|
||
|
|
the rectangle is constructed with a counterclockwise winding.
|
||
|
|
</para>
|
||
|
|
</refsect1>
|
||
|
|
<refsect1 id="errors"><title>Errors</title>
|
||
|
|
<para>
|
||
|
|
<constant>GL_INVALID_OPERATION</constant> is generated if <function>glRect</function>
|
||
|
|
is executed between the execution of <citerefentry><refentrytitle>glBegin</refentrytitle></citerefentry>
|
||
|
|
and the corresponding execution of <citerefentry><refentrytitle>glEnd</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</refsect1>
|
||
|
|
<refsect1 id="seealso"><title>See Also</title>
|
||
|
|
<para>
|
||
|
|
<citerefentry><refentrytitle>glBegin</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glVertex</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>
|