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<p>Converting mathematical structures from Allegro to OpenGL.
<a href="#details">More...</a></p>
<div class="textblock"><code>#include <math.h></code><br />
<code>#include <allegro.h></code><br />
<code>#include "<a class="el" href="alleggl_8h_source.html">alleggl.h</a>"</code><br />
<code>#include "allglint.h"</code><br />
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<p><a href="math_8c_source.html">Go to the source code of this file.</a></p>
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Macros</h2></td></tr>
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#define </td><td class="memItemRight" valign="bottom"><b>M_PI</b>   3.14159265358979323846</td></tr>
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#define </td><td class="memItemRight" valign="bottom"><b>ALGL_NOCONV</b>(x)   x</td></tr>
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<tr class="memitem:a25e8baba5630176200a8cfa8a6fdd1e0"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><b>TRANSLATE_AL_TO_GL</b>(al_type, gl_type, convertor)</td></tr>
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#define </td><td class="memItemRight" valign="bottom"><b>RAD_2_DEG</b>(a)   ((a) * 180 / M_PI)</td></tr>
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Functions</h2></td></tr>
<tr class="memitem:ga983a72d7910e4f792e1689ccd13e1f0a"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__math.html#ga983a72d7910e4f792e1689ccd13e1f0a">for</a> ()</td></tr>
<tr class="memdesc:ga983a72d7910e4f792e1689ccd13e1f0a"><td class="mdescLeft"> </td><td class="mdescRight">Converts an OpenGL floating-point matrix issued from the matrix stack to an Allegro fixed-point matrix. <a href="group__math.html#ga983a72d7910e4f792e1689ccd13e1f0a">More...</a><br /></td></tr>
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<tr><td colspan="2"><div class="groupHeader">Matrix conversion routines</div></td></tr>
<tr class="memitem:ga4cf4f453cb3f95a1e7e861a7401b4a8d"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__math.html#ga4cf4f453cb3f95a1e7e861a7401b4a8d">allegro_gl_MATRIX_to_GLfloat</a> (MATRIX *m, GLfloat gl[16])</td></tr>
<tr class="memdesc:ga4cf4f453cb3f95a1e7e861a7401b4a8d"><td class="mdescLeft"> </td><td class="mdescRight">Converts an Allegro fixed-point matrix to an array of floats suitable for OpenGL's matrix operations. <a href="group__math.html#ga4cf4f453cb3f95a1e7e861a7401b4a8d">More...</a><br /></td></tr>
<tr class="separator:ga4cf4f453cb3f95a1e7e861a7401b4a8d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gaee6cb48f8e3e70abecc6c282a8ea1edc"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__math.html#gaee6cb48f8e3e70abecc6c282a8ea1edc">allegro_gl_MATRIX_to_GLdouble</a> (MATRIX *m, GLdouble gl[16])</td></tr>
<tr class="memdesc:gaee6cb48f8e3e70abecc6c282a8ea1edc"><td class="mdescLeft"> </td><td class="mdescRight">Converts an Allegro fixed-point matrix to an array of doubles suitable for OpenGL's matrix operations. <a href="group__math.html#gaee6cb48f8e3e70abecc6c282a8ea1edc">More...</a><br /></td></tr>
<tr class="separator:gaee6cb48f8e3e70abecc6c282a8ea1edc"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:gae8e0ee18b9aeca955402be16de6ca79d"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__math.html#gae8e0ee18b9aeca955402be16de6ca79d">allegro_gl_MATRIX_f_to_GLfloat</a> (MATRIX_f *m, GLfloat gl[16])</td></tr>
<tr class="memdesc:gae8e0ee18b9aeca955402be16de6ca79d"><td class="mdescLeft"> </td><td class="mdescRight">Converts an Allegro floating-point matrix to an array of floats suitable for OpenGL's matrix operations. <a href="group__math.html#gae8e0ee18b9aeca955402be16de6ca79d">More...</a><br /></td></tr>
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<tr class="memitem:gab93f3588ea08b048f418023aa76cb3fc"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__math.html#gab93f3588ea08b048f418023aa76cb3fc">allegro_gl_MATRIX_f_to_GLdouble</a> (MATRIX_f *m, GLdouble gl[16])</td></tr>
<tr class="memdesc:gab93f3588ea08b048f418023aa76cb3fc"><td class="mdescLeft"> </td><td class="mdescRight">Converts an Allegro floating-point matrix to an array of doubles suitable for OpenGL's matrix operations. <a href="group__math.html#gab93f3588ea08b048f418023aa76cb3fc">More...</a><br /></td></tr>
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<tr><td colspan="2"><div class="groupHeader">Quaternion conversion routines</div></td></tr>
<tr class="memitem:gab00b667363181a8f0853121170bebaca"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__math.html#gab00b667363181a8f0853121170bebaca">allegro_gl_quat_to_glrotatef</a> (QUAT *q, float *angle, float *x, float *y, float *z)</td></tr>
<tr class="memdesc:gab00b667363181a8f0853121170bebaca"><td class="mdescLeft"> </td><td class="mdescRight">Converts a quaternion to a vector/angle, which can be used with glRotate*(). <a href="group__math.html#gab00b667363181a8f0853121170bebaca">More...</a><br /></td></tr>
<tr class="separator:gab00b667363181a8f0853121170bebaca"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ga956160418e1c0c37143dd3cee54477ce"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__math.html#ga956160418e1c0c37143dd3cee54477ce">allegro_gl_quat_to_glrotated</a> (QUAT *q, double *angle, double *x, double *y, double *z)</td></tr>
<tr class="memdesc:ga956160418e1c0c37143dd3cee54477ce"><td class="mdescLeft"> </td><td class="mdescRight">Converts a quaternion to a vector/angle, which can be used with glRotate*(). <a href="group__math.html#ga956160418e1c0c37143dd3cee54477ce">More...</a><br /></td></tr>
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Variables</h2></td></tr>
<tr class="memitem:a40fef7687d6e0ee386905f04ef80f94b"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><b>allegro_gl_</b></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Converting mathematical structures from Allegro to OpenGL. </p>
<p>This file provides routines to make Allegro matrices from GL-style matrices, and vice versa. This also provides a QUAT to glRotate converter.</p>
<p>Note that Allegro matrices can only store affine transformations. </p>
<p>Definition in file <a class="el" href="math_8c_source.html">math.c</a>.</p>
</div><h2 class="groupheader">Macro Definition Documentation</h2>
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<td class="memname">#define TRANSLATE_AL_TO_GL</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">al_type, </td>
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<td class="paramkey"></td>
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<td class="paramtype"> </td>
<td class="paramname">gl_type, </td>
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<td class="paramtype"> </td>
<td class="paramname">convertor </td>
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<td>)</td>
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<b>Value:</b><div class="fragment"><div class="line"><span class="keywordtype">void</span> allegro_gl_##al_type##_to_##gl_type (al_type *m, gl_type gl[16]) \</div><div class="line"> { \</div><div class="line"> int col, row; <a class="code" href="group__math.html#ga983a72d7910e4f792e1689ccd13e1f0a">\</a></div><div class="line"><a class="code" href="group__math.html#ga983a72d7910e4f792e1689ccd13e1f0a"> for</a> (col = 0; col < 3; col++) \</div><div class="line"> <span class="keywordflow">for</span> (row = 0; row < 3; row++) \</div><div class="line"> gl[col*4+row] = convertor (m->v[col][row]); <a class="code" href="group__math.html#ga983a72d7910e4f792e1689ccd13e1f0a">\</a></div><div class="line"><a class="code" href="group__math.html#ga983a72d7910e4f792e1689ccd13e1f0a"> for</a> (row = 0; row < 3; row++) \</div><div class="line"> gl[12+row] = convertor (m->t[row]); <a class="code" href="group__math.html#ga983a72d7910e4f792e1689ccd13e1f0a">\</a></div><div class="line"><a class="code" href="group__math.html#ga983a72d7910e4f792e1689ccd13e1f0a"> for</a> (col = 0; col < 3; col++) \</div><div class="line"> gl[4*col + 3] = 0; \</div><div class="line"> gl[15] = 1; \</div><div class="line"> }</div><div class="ttc" id="group__math_html_ga983a72d7910e4f792e1689ccd13e1f0a"><div class="ttname"><a href="group__math.html#ga983a72d7910e4f792e1689ccd13e1f0a">for</a></div><div class="ttdeci">for()</div><div class="ttdoc">Converts an OpenGL floating-point matrix issued from the matrix stack to an Allegro fixed-point matri...</div><div class="ttdef"><b>Definition:</b> <a href="math_8c_source.html#l00114">math.c:114</a></div></div>
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<p>Definition at line <a class="el" href="math_8c_source.html#l00028">28</a> of file <a class="el" href="math_8c_source.html">math.c</a>.</p>
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<h2 class="groupheader">Variable Documentation</h2>
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<td class="memname">void allegro_gl_</td>
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<b>Initial value:</b><div class="fragment"><div class="line">{ </div><div class="line"> <span class="keywordtype">int</span> col, row</div></div><!-- fragment -->
<p>Definition at line <a class="el" href="math_8c_source.html#l00112">112</a> of file <a class="el" href="math_8c_source.html">math.c</a>.</p>
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