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<a href="#define-members">Defines</a> </div>
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<h1>math.c File Reference</h1> </div>
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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 "alleggl.h"</code><br/>
<code>#include "allglint.h"</code><br/>
</div>
<p><a href="math_8c_source.html">Go to the source code of this file.</a></p>
<h2><a name="define-members"></a>
Defines</h2>
<ul>
<li><a class="anchor" id="ae71449b1cc6e6250b91f539153a7a0d3"></a><!-- doxytag: member="math.c::M_PI" ref="ae71449b1cc6e6250b91f539153a7a0d3" args="" -->
#define <b>M_PI</b>   3.14159265358979323846
<li><a class="anchor" id="a33706d38f2836132b07580c38541b0ba"></a><!-- doxytag: member="math.c::ALGL_NOCONV" ref="a33706d38f2836132b07580c38541b0ba" args="(x)" -->
#define <b>ALGL_NOCONV</b>(x)   x
<li>#define <b>TRANSLATE_AL_TO_GL</b>(al_type, gl_type, convertor)
<li><a class="anchor" id="a779175036d19925ff6aa6469c2926b00"></a><!-- doxytag: member="math.c::RAD_2_DEG" ref="a779175036d19925ff6aa6469c2926b00" args="(a)" -->
#define <b>RAD_2_DEG</b>(a)   ((a) * 180 / M_PI)
</ul>
<h2><a name="func-members"></a>
Functions</h2>
<tr><td colspan="2"><div class="groupHeader">Matrix conversion routines</div></td></tr>
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<li>void <a class="el" href="group__math.html#ga4cf4f453cb3f95a1e7e861a7401b4a8d">allegro_gl_MATRIX_to_GLfloat</a> (MATRIX *m, GLfloat gl[16])
<dl class="el"><dd 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"></a><br/></dl><li>void <a class="el" href="group__math.html#gaee6cb48f8e3e70abecc6c282a8ea1edc">allegro_gl_MATRIX_to_GLdouble</a> (MATRIX *m, GLdouble gl[16])
<dl class="el"><dd 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"></a><br/></dl><li>void <a class="el" href="group__math.html#gae8e0ee18b9aeca955402be16de6ca79d">allegro_gl_MATRIX_f_to_GLfloat</a> (MATRIX_f *m, GLfloat gl[16])
<dl class="el"><dd 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"></a><br/></dl><li>void <a class="el" href="group__math.html#gab93f3588ea08b048f418023aa76cb3fc">allegro_gl_MATRIX_f_to_GLdouble</a> (MATRIX_f *m, GLdouble gl[16])
<dl class="el"><dd 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"></a><br/></dl></ul>
<hr/><a name="_details"></a><h2>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><hr/><h2>Define Documentation</h2>
<a class="anchor" id="a25e8baba5630176200a8cfa8a6fdd1e0"></a><!-- doxytag: member="math.c::TRANSLATE_AL_TO_GL" ref="a25e8baba5630176200a8cfa8a6fdd1e0" args="(al_type, gl_type, convertor)" -->
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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>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">gl_type, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">convertor </td>
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<td></td>
<td>)</td>
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<b>Value:</b><div class="fragment"><pre class="fragment"><span class="keywordtype">void</span> allegro_gl_##al_type##_to_##gl_type (al_type *m, gl_type gl[16]) \
{ \
<span class="keywordtype">int</span> col, row; \
<span class="keywordflow">for</span> (col = 0; col < 3; col++) \
<span class="keywordflow">for</span> (row = 0; row < 3; row++) \
gl[col*4+row] = convertor (m->v[col][row]); \
<span class="keywordflow">for</span> (row = 0; row < 3; row++) \
gl[12+row] = convertor (m->t[row]); \
<span class="keywordflow">for</span> (col = 0; col < 3; col++) \
gl[4*col + 3] = 0; \
gl[15] = 1; \
}
</pre></div>
<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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