| 1 | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "xhtml1-transitional.dtd"> |
| 2 | <!-- saved from url=(0013)about:internet --> |
| 3 | <?xml-stylesheet type="text/xsl" href="mathml.xsl"?><html xmlns="http://www.w3.org/1999/xhtml" xmlns:pref="http://www.w3.org/2002/Math/preference" pref:renderer="mathplayer-dl"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>glLoadIdentity</title><meta name="generator" content="DocBook XSL Stylesheets V1.73.2" /></head><body><div class="refentry" lang="en" xml:lang="en"><a id="glLoadIdentity"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>glLoadIdentity — replace the current matrix with the identity matrix</p></div><div class="refsynopsisdiv"><h2>C Specification</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glLoadIdentity</b>(</code></td><td> </td><td><var class="pdparam">void</var><code>)</code>;</td></tr></table></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="description"></a><h2>Description</h2><p> |
| 4 | <code class="function">glLoadIdentity</code> replaces the current matrix with the identity matrix. |
| 5 | It is semantically equivalent to calling <a class="citerefentry" href="glLoadMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glLoadMatrix</span></span></a> |
| 6 | with the identity matrix |
| 7 | </p><p> |
| 8 | </p><p> |
| 9 | </p><div class="informalequation"><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> |
| 10 | |
| 11 | <mml:mfenced open="(" close=")"> |
| 12 | <mml:mfenced open="" close=""> |
| 13 | <mml:mtable> |
| 14 | <mml:mtr> |
| 15 | <mml:mtd> |
| 16 | <mml:mn>1</mml:mn> |
| 17 | </mml:mtd> |
| 18 | <mml:mtd> |
| 19 | <mml:mn>0</mml:mn> |
| 20 | </mml:mtd> |
| 21 | <mml:mtd> |
| 22 | <mml:mn>0</mml:mn> |
| 23 | </mml:mtd> |
| 24 | <mml:mtd> |
| 25 | <mml:mn>0</mml:mn> |
| 26 | </mml:mtd> |
| 27 | </mml:mtr> |
| 28 | <mml:mtr> |
| 29 | <mml:mtd> |
| 30 | <mml:mn>0</mml:mn> |
| 31 | </mml:mtd> |
| 32 | <mml:mtd> |
| 33 | <mml:mn>1</mml:mn> |
| 34 | </mml:mtd> |
| 35 | <mml:mtd> |
| 36 | <mml:mn>0</mml:mn> |
| 37 | </mml:mtd> |
| 38 | <mml:mtd> |
| 39 | <mml:mn>0</mml:mn> |
| 40 | </mml:mtd> |
| 41 | </mml:mtr> |
| 42 | <mml:mtr> |
| 43 | <mml:mtd> |
| 44 | <mml:mn>0</mml:mn> |
| 45 | </mml:mtd> |
| 46 | <mml:mtd> |
| 47 | <mml:mn>0</mml:mn> |
| 48 | </mml:mtd> |
| 49 | <mml:mtd> |
| 50 | <mml:mn>1</mml:mn> |
| 51 | </mml:mtd> |
| 52 | <mml:mtd> |
| 53 | <mml:mn>0</mml:mn> |
| 54 | </mml:mtd> |
| 55 | </mml:mtr> |
| 56 | <mml:mtr> |
| 57 | <mml:mtd> |
| 58 | <mml:mn>0</mml:mn> |
| 59 | </mml:mtd> |
| 60 | <mml:mtd> |
| 61 | <mml:mn>0</mml:mn> |
| 62 | </mml:mtd> |
| 63 | <mml:mtd> |
| 64 | <mml:mn>0</mml:mn> |
| 65 | </mml:mtd> |
| 66 | <mml:mtd> |
| 67 | <mml:mn>1</mml:mn> |
| 68 | </mml:mtd> |
| 69 | </mml:mtr> |
| 70 | </mml:mtable> |
| 71 | </mml:mfenced> |
| 72 | </mml:mfenced> |
| 73 | </mml:math></div><p> |
| 74 | </p><p> |
| 75 | </p><p> |
| 76 | but in some cases it is more efficient. |
| 77 | </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="errors"></a><h2>Errors</h2><p> |
| 78 | <code class="constant">GL_INVALID_OPERATION</code> is generated if <code class="function">glLoadIdentity</code> |
| 79 | is executed between the execution of <a class="citerefentry" href="glBegin.xml"><span class="citerefentry"><span class="refentrytitle">glBegin</span></span></a> |
| 80 | and the corresponding execution of <a class="citerefentry" href="glEnd.xml"><span class="citerefentry"><span class="refentrytitle">glEnd</span></span></a>. |
| 81 | </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="associatedgets"></a><h2>Associated Gets</h2><p> |
| 82 | <a class="citerefentry" href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_MATRIX_MODE</code> |
| 83 | </p><p> |
| 84 | <a class="citerefentry" href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_COLOR_MATRIX</code> |
| 85 | </p><p> |
| 86 | <a class="citerefentry" href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_MODELVIEW_MATRIX</code> |
| 87 | </p><p> |
| 88 | <a class="citerefentry" href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_PROJECTION_MATRIX</code> |
| 89 | </p><p> |
| 90 | <a class="citerefentry" href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_TEXTURE_MATRIX</code> |
| 91 | </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="seealso"></a><h2>See Also</h2><p> |
| 92 | <a class="citerefentry" href="glLoadMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glLoadMatrix</span></span></a>, |
| 93 | <a class="citerefentry" href="glLoadTransposeMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glLoadTransposeMatrix</span></span></a>, |
| 94 | <a class="citerefentry" href="glMatrixMode.xml"><span class="citerefentry"><span class="refentrytitle">glMatrixMode</span></span></a>, |
| 95 | <a class="citerefentry" href="glMultMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glMultMatrix</span></span></a>, |
| 96 | <a class="citerefentry" href="glMultTransposeMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glMultTransposeMatrix</span></span></a>, |
| 97 | <a class="citerefentry" href="glPushMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glPushMatrix</span></span></a> |
| 98 | </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="Copyright"></a><h2>Copyright</h2><p> |
| 99 | Copyright <span class="trademark"></span>© 1991-2006 |
| 100 | Silicon Graphics, Inc. This document is licensed under the SGI |
| 101 | Free Software B License. For details, see |
| 102 | <a class="ulink" href="http://oss.sgi.com/projects/FreeB/" target="_top">http://oss.sgi.com/projects/FreeB/</a>. |
| 103 | </p></div></div></body></html> |