1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0//EN" "http://www.w3.org/TR/MathML2/dtd/xhtml-math11-f.dtd">
<html
xmlns="http://www.w3.org/1999/xhtml"
xmlns:mml="http://www.w3.org/1998/Math/MathML"
><head><title>glRect</title><link rel="stylesheet" href="style.css" type="text/css"/><meta name="generator" content="DocBook XSL Stylesheets V1.59.1"/><link rel="home" href="index.xml" title="PyOpenGL 2.0.1.07 Man Pages"/><link rel="up" href="reference-GL.xml" title="GL"/><link rel="previous" href="glReadPixels.3G.xml" title="glReadPixels"/><link rel="next" href="glRenderMode.3G.xml" title="glRenderMode"/></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">glRect</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="glReadPixels.3G.xml">Prev</a></td><th width="60%" align="center">GL</th><td width="20%" align="right"><a accesskey="n" href="glRenderMode.3G.xml">Next</a></td></tr></table><hr/></div><div class="refentry" lang="en"><a name="glRect.3G"/><div class="titlepage"/><div class="refnamediv"><a name="glRect.3G-name"/><h2>Name</h2><p>glRectd, glRectf, glRecti, glRects, glRectdv, glRectfv, glRectiv, glRectsv — draw a rectangle</p></div><div class="refsynopsisdiv"><a name="glRect.3G-c_spec"/><h2>C Specification</h2><table class="funcprototype" border="0" cellpadding="0" cellspacing="0"><tr><td valign="top"><code>void<tt>glRectd</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code>GLdouble<i><tt>x1</tt></i>, GLdouble<i><tt>y1</tt></i>, GLdouble<i><tt>x2</tt></i>, GLdouble<i><tt>y2</tt></i>);</code></td></tr><tr><td valign="top"><code>void<tt>glRectf</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code>GLfloat<i><tt>x1</tt></i>, GLfloat<i><tt>y1</tt></i>, GLfloat<i><tt>x2</tt></i>, GLfloat<i><tt>y2</tt></i>);</code></td></tr><tr><td valign="top"><code>void<tt>glRecti</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code>GLint<i><tt>x1</tt></i>, GLint<i><tt>y1</tt></i>, GLint<i><tt>x2</tt></i>, GLint<i><tt>y2</tt></i>);</code></td></tr><tr><td valign="top"><code>void<tt>glRects</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code>GLshort<i><tt>x1</tt></i>, GLshort<i><tt>y1</tt></i>, GLshort<i><tt>x2</tt></i>, GLshort<i><tt>y2</tt></i>);</code></td></tr></table></div><div class="refsynopsisdiv"><a name="glRect.3G-python_spec"/><h2>Python Specification</h2><table class="funcprototype" border="0" cellpadding="0" cellspacing="0"><tr><td valign="top"><code><tt>glRectd</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code><i><tt>x1</tt></i>, <i><tt>y1</tt></i>, <i><tt>x2</tt></i>, <i><tt>y2</tt></i>) →<tt>None</tt></code></td></tr><tr><td valign="top"><code><tt>glRectf</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code><i><tt>x1</tt></i>, <i><tt>y1</tt></i>, <i><tt>x2</tt></i>, <i><tt>y2</tt></i>) →<tt>None</tt></code></td></tr><tr><td valign="top"><code><tt>glRecti</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code><i><tt>x1</tt></i>, <i><tt>y1</tt></i>, <i><tt>x2</tt></i>, <i><tt>y2</tt></i>) →<tt>None</tt></code></td></tr><tr><td valign="top"><code><tt>glRects</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code><i><tt>x1</tt></i>, <i><tt>y1</tt></i>, <i><tt>x2</tt></i>, <i><tt>y2</tt></i>) →<tt>None</tt></code></td></tr></table></div><div class="refsect1" lang="en"><a name="glRect.3G-parameters"/><h2>Parameters</h2><div class="variablelist"><dl><dt><span class="term"><i><tt>x1</tt></i>, <i><tt>y1</tt></i></span></dt><dd>
Specify one vertex of a rectangle.
</dd><dt><span class="term"><i><tt>x2</tt></i>, <i><tt>y2</tt></i></span></dt><dd>
Specify the opposite vertex of the rectangle.
</dd></dl></div></div><div class="refsynopsisdiv"><a name="glRect.3G-c_spec-v"/><h2>C Specification</h2><table class="funcprototype" border="0" cellpadding="0" cellspacing="0"><tr><td valign="top"><code>void<tt>glRectdv</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code>constGLdouble*<i><tt>v1</tt></i>, constGLdouble*<i><tt>v2</tt></i>);</code></td></tr><tr><td valign="top"><code>void<tt>glRectfv</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code>constGLfloat*<i><tt>v1</tt></i>, constGLfloat*<i><tt>v2</tt></i>);</code></td></tr><tr><td valign="top"><code>void<tt>glRectiv</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code>constGLint*<i><tt>v1</tt></i>, constGLint*<i><tt>v2</tt></i>);</code></td></tr><tr><td valign="top"><code>void<tt>glRectsv</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code>constGLshort*<i><tt>v1</tt></i>, constGLshort*<i><tt>v2</tt></i>);</code></td></tr></table></div><div class="refsynopsisdiv"><a name="glRect.3G-python_spec-v"/><h2>Python Specification</h2><table class="funcprototype" border="0" cellpadding="0" cellspacing="0"><tr><td valign="top"><code><tt>glRectdv</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code><i><tt>v1</tt></i>, <i><tt>v2</tt></i>) →<tt>None</tt></code></td></tr><tr><td valign="top"><code><tt>glRectfv</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code><i><tt>v1</tt></i>, <i><tt>v2</tt></i>) →<tt>None</tt></code></td></tr><tr><td valign="top"><code><tt>glRectiv</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code><i><tt>v1</tt></i>, <i><tt>v2</tt></i>) →<tt>None</tt></code></td></tr><tr><td valign="top"><code><tt>glRectsv</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code><i><tt>v1</tt></i>, <i><tt>v2</tt></i>) →<tt>None</tt></code></td></tr></table></div><div class="refsect1" lang="en"><a name="glRect.3G-parameters-v"/><h2>Parameters</h2><div class="variablelist"><dl><dt><span class="term"><i><tt>v1</tt></i></span></dt><dd>
Specifies a pointer to one vertex of a rectangle.
</dd><dt><span class="term"><i><tt>v2</tt></i></span></dt><dd>
Specifies a pointer to the opposite vertex of the rectangle.
</dd></dl></div></div><div class="refsect1" lang="en"><a name="glRect.3G-description"/><h2>Description</h2><p>
<tt>glRect</tt> supports efficient specification of rectangles as two corner points.
Each rectangle command takes four arguments, organized either as two consecutive pairs of
(<i><tt>x</tt></i>,<i><tt>y</tt></i>) coordinates, or as two pointers to arrays, each containing an
(<i><tt>x</tt></i>,<i><tt>y</tt></i>) pair. The resulting rectangle is defined in the
<i><tt>z</tt></i> = 0 plane.
</p><p>
<tt>glRect</tt>(<i><tt>x1</tt></i>, <i><tt>y1</tt></i>,
<i><tt>x2</tt></i>, <i><tt>y2</tt></i>) is exactly equivalent to the following sequence:
glBegin(<tt>GL_POLYGON</tt>); glVertex2(<i><tt>x1</tt></i>, <i><tt>y1</tt></i>);
glVertex2(<i><tt>x2</tt></i>, <i><tt>y1</tt></i>); glVertex2(<i><tt>x2</tt></i>,
<i><tt>y2</tt></i>); glVertex2(<i><tt>x1</tt></i>, <i><tt>y2</tt></i>); glEnd(); Note that if the
second vertex is above and to the right of the first vertex, the rectangle is constructed with a counterclockwise
winding.
</p></div><div class="refsect1" lang="en"><a name="glRect.3G-errors"/><h2>Errors</h2><p>
<tt>GL_INVALID_OPERATION</tt> is generated if <tt>glRect</tt> is executed
between the execution of <a href="glBegin.3G.xml"><tt>glBegin</tt></a> and the corresponding execution of <a href="glBegin.3G.xml"><tt>glEnd</tt></a>.
</p></div><div class="refsect1" lang="en"><a name="glRect.3G-see_also"/><h2>See Also</h2><p>
<span class="simplelist"><a href="glBegin.3G.xml">glBegin</a>, <a href="glVertex.3G.xml">glVertex</a></span>
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="glReadPixels.3G.xml">Prev</a></td><td width="20%" align="center"><a accesskey="u" href="reference-GL.xml">Up</a></td><td width="40%" align="right"><a accesskey="n" href="glRenderMode.3G.xml">Next</a></td></tr><tr><td width="40%" align="left" valign="top">glReadPixels</td><td width="20%" align="center"><a accesskey="h" href="index.xml">Home</a></td><td width="40%" align="right" valign="top">glRenderMode</td></tr></table></div></body></html>
|
