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<div id="projectname">Box2D
 <span id="projectnumber">2.3.0</span>
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<div id="projectbrief">A 2D Physics Engine for Games</div>
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<li class="navelem"><a class="el" href="dir_a7f953fea4e008d17e00594b3bbaff29.html">Box2D</a></li><li class="navelem"><a class="el" href="dir_2bb440aa7e31c6a1fa7299279b8cd0fb.html">Common</a></li> </ul>
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<a href="b2_settings_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">* Copyright (c) 2006-2009 Erin Catto http://www.box2d.org</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">*</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">* This software is provided 'as-is', without any express or implied</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">* warranty. In no event will the authors be held liable for any damages</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">* arising from the use of this software.</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">* Permission is granted to anyone to use this software for any purpose,</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">* including commercial applications, and to alter it and redistribute it</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">* freely, subject to the following restrictions:</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">* 1. The origin of this software must not be misrepresented; you must not</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">* claim that you wrote the original software. If you use this software</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">* in a product, an acknowledgment in the product documentation would be</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">* appreciated but is not required.</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">* 2. Altered source versions must be plainly marked as such, and must not be</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment">* misrepresented as being the original software.</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment">* 3. This notice may not be removed or altered from any source distribution.</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">*/</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#ifndef B2_SETTINGS_H</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#define B2_SETTINGS_H</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <stddef.h></span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <assert.h></span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include <float.h></span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#define B2_NOT_USED(x) ((void)(x))</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#define b2Assert(A) assert(A)</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="keyword">typedef</span> <span class="keywordtype">signed</span> <span class="keywordtype">char</span> int8;</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keyword">typedef</span> <span class="keywordtype">signed</span> <span class="keywordtype">short</span> int16;</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="keyword">typedef</span> <span class="keywordtype">signed</span> <span class="keywordtype">int</span> int32;</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="keyword">typedef</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> uint8;</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="keyword">typedef</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> uint16;</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="keyword">typedef</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> uint32;</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="keyword">typedef</span> <span class="keywordtype">float</span> float32;</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="keyword">typedef</span> <span class="keywordtype">double</span> float64;</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor">#define b2_maxFloat FLT_MAX</span></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor">#define b2_epsilon FLT_EPSILON</span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="preprocessor">#define b2_pi 3.14159265359f</span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> </div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment">// Collision</span></div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> </div><div class="line"><a name="l00050"></a><span class="lineno"><a class="line" href="b2_settings_8h.html#aa5f44cc9edf711433dea2b2ec94f3c42"> 50</a></span> <span class="preprocessor">#define b2_maxManifoldPoints 2</span></div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span> </div><div class="line"><a name="l00054"></a><span class="lineno"><a class="line" href="b2_settings_8h.html#a09d71ee1993bee28b5b2e6d893b41884"> 54</a></span> <span class="preprocessor">#define b2_maxPolygonVertices 8</span></div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span> </div><div class="line"><a name="l00059"></a><span class="lineno"><a class="line" href="b2_settings_8h.html#adb86e231496fdd6ac7795ce58d40c870"> 59</a></span> <span class="preprocessor">#define b2_aabbExtension 0.1f</span></div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span> </div><div class="line"><a name="l00064"></a><span class="lineno"><a class="line" href="b2_settings_8h.html#a7d1bd1594f20601d4079bccbd0a6a03c"> 64</a></span> <span class="preprocessor">#define b2_aabbMultiplier 2.0f</span></div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div><div class="line"><a name="l00068"></a><span class="lineno"><a class="line" href="b2_settings_8h.html#a57268ade379c5c3373d0ff558b0350cf"> 68</a></span> <span class="preprocessor">#define b2_linearSlop 0.005f</span></div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span> </div><div class="line"><a name="l00072"></a><span class="lineno"><a class="line" href="b2_settings_8h.html#a67810fb101bb7a7e0b3afc14845383ee"> 72</a></span> <span class="preprocessor">#define b2_angularSlop (2.0f / 180.0f * b2_pi)</span></div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span> </div><div class="line"><a name="l00077"></a><span class="lineno"><a class="line" href="b2_settings_8h.html#afc0f934dabffb1e83e081249133ad860"> 77</a></span> <span class="preprocessor">#define b2_polygonRadius (2.0f * b2_linearSlop)</span></div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span> </div><div class="line"><a name="l00080"></a><span class="lineno"><a class="line" href="b2_settings_8h.html#ac1fd56e39ab8499f344b6398b7332e55"> 80</a></span> <span class="preprocessor">#define b2_maxSubSteps 8</span></div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span> </div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span> </div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment">// Dynamics</span></div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span> </div><div class="line"><a name="l00086"></a><span class="lineno"><a class="line" href="b2_settings_8h.html#aad3a54bcae5f7ec0235963403c2fccc9"> 86</a></span> <span class="preprocessor">#define b2_maxTOIContacts 32</span></div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div><div class="line"><a name="l00090"></a><span class="lineno"><a class="line" href="b2_settings_8h.html#a690b448aa2dba2a1393781f8c059c22a"> 90</a></span> <span class="preprocessor">#define b2_velocityThreshold 1.0f</span></div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div><div class="line"><a name="l00094"></a><span class="lineno"><a class="line" href="b2_settings_8h.html#a23ab70e4809f5ee23abcd52018d5eb88"> 94</a></span> <span class="preprocessor">#define b2_maxLinearCorrection 0.2f</span></div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div><div class="line"><a name="l00098"></a><span class="lineno"><a class="line" href="b2_settings_8h.html#a823e4f9a6fa4b9de3c97da696571400a"> 98</a></span> <span class="preprocessor">#define b2_maxAngularCorrection (8.0f / 180.0f * b2_pi)</span></div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span> </div><div class="line"><a name="l00102"></a><span class="lineno"><a class="line" href="b2_settings_8h.html#af2bad257bfbafed3665df3e243ba2b52"> 102</a></span> <span class="preprocessor">#define b2_maxTranslation 2.0f</span></div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="preprocessor">#define b2_maxTranslationSquared (b2_maxTranslation * b2_maxTranslation)</span></div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span> </div><div class="line"><a name="l00107"></a><span class="lineno"><a class="line" href="b2_settings_8h.html#a5808c5f1e946205d8f7458101ccc698e"> 107</a></span> <span class="preprocessor">#define b2_maxRotation (0.5f * b2_pi)</span></div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="preprocessor">#define b2_maxRotationSquared (b2_maxRotation * b2_maxRotation)</span></div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span> </div><div class="line"><a name="l00113"></a><span class="lineno"><a class="line" href="b2_settings_8h.html#a88e32539e0f9e69e3832e1321eba3caa"> 113</a></span> <span class="preprocessor">#define b2_baumgarte 0.2f</span></div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="preprocessor">#define b2_toiBaugarte 0.75f</span></div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span> </div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="comment">// Sleep</span></div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span> </div><div class="line"><a name="l00120"></a><span class="lineno"><a class="line" href="b2_settings_8h.html#ab021adb740e4a5e1f5f7d9913ed94781"> 120</a></span> <span class="preprocessor">#define b2_timeToSleep 0.5f</span></div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span> </div><div class="line"><a name="l00123"></a><span class="lineno"><a class="line" href="b2_settings_8h.html#a6d882c48142a8c73011b576e20dc6dd8"> 123</a></span> <span class="preprocessor">#define b2_linearSleepTolerance 0.01f</span></div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span> </div><div class="line"><a name="l00126"></a><span class="lineno"><a class="line" href="b2_settings_8h.html#a571f3e7c864aca14141b163205600eef"> 126</a></span> <span class="preprocessor">#define b2_angularSleepTolerance (2.0f / 180.0f * b2_pi)</span></div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span> </div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="comment">// Memory Allocation</span></div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span> </div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="keywordtype">void</span>* <a class="code" href="b2_settings_8h.html#a2dca9b286e9b9d6d022055fd61534bd7">b2Alloc</a>(int32 size);</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span> </div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="keywordtype">void</span> <a class="code" href="b2_settings_8h.html#a50f4abf5edeabd0300946edbd542e24d">b2Free</a>(<span class="keywordtype">void</span>* mem);</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span> </div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="keywordtype">void</span> <a class="code" href="b2_settings_8h.html#a9f10095d05c74eebfe535931c9061ab2">b2Log</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* <span class="keywordtype">string</span>, ...);</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span> </div><div class="line"><a name="l00141"></a><span class="lineno"><a class="line" href="structb2_version.html"> 141</a></span> <span class="keyword">struct </span><a class="code" href="structb2_version.html">b2Version</a></div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span> {</div><div class="line"><a name="l00143"></a><span class="lineno"><a class="line" href="structb2_version.html#a720da8e346364d1cb34d176125380b44"> 143</a></span>  int32 <a class="code" href="structb2_version.html#a720da8e346364d1cb34d176125380b44">major</a>; </div><div class="line"><a name="l00144"></a><span class="lineno"><a class="line" href="structb2_version.html#a115b8797a6e0b8e53f54502bd20d89da"> 144</a></span>  int32 <a class="code" href="structb2_version.html#a115b8797a6e0b8e53f54502bd20d89da">minor</a>; </div><div class="line"><a name="l00145"></a><span class="lineno"><a class="line" href="structb2_version.html#a395cfe1434e348115d2ead3d72b88847"> 145</a></span>  int32 <a class="code" href="structb2_version.html#a395cfe1434e348115d2ead3d72b88847">revision</a>; </div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span> };</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span> </div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="keyword">extern</span> <a class="code" href="structb2_version.html">b2Version</a> <a class="code" href="b2_settings_8h.html#a3a20e3b6a8b05633d911fea031f7a44f">b2_version</a>;</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span> </div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="preprocessor">#endif</span></div><div class="ttc" id="b2_settings_8h_html_a9f10095d05c74eebfe535931c9061ab2"><div class="ttname"><a href="b2_settings_8h.html#a9f10095d05c74eebfe535931c9061ab2">b2Log</a></div><div class="ttdeci">void b2Log(const char *string,...)</div><div class="ttdoc">Logging function. </div><div class="ttdef"><b>Definition:</b> b2Settings.cpp:38</div></div>
<div class="ttc" id="structb2_version_html_a115b8797a6e0b8e53f54502bd20d89da"><div class="ttname"><a href="structb2_version.html#a115b8797a6e0b8e53f54502bd20d89da">b2Version::minor</a></div><div class="ttdeci">int32 minor</div><div class="ttdoc">incremental changes </div><div class="ttdef"><b>Definition:</b> b2Settings.h:144</div></div>
<div class="ttc" id="b2_settings_8h_html_a50f4abf5edeabd0300946edbd542e24d"><div class="ttname"><a href="b2_settings_8h.html#a50f4abf5edeabd0300946edbd542e24d">b2Free</a></div><div class="ttdeci">void b2Free(void *mem)</div><div class="ttdoc">If you implement b2Alloc, you should also implement this function. </div><div class="ttdef"><b>Definition:</b> b2Settings.cpp:32</div></div>
<div class="ttc" id="b2_settings_8h_html_a2dca9b286e9b9d6d022055fd61534bd7"><div class="ttname"><a href="b2_settings_8h.html#a2dca9b286e9b9d6d022055fd61534bd7">b2Alloc</a></div><div class="ttdeci">void * b2Alloc(int32 size)</div><div class="ttdoc">Implement this function to use your own memory allocator. </div><div class="ttdef"><b>Definition:</b> b2Settings.cpp:27</div></div>
<div class="ttc" id="b2_settings_8h_html_a3a20e3b6a8b05633d911fea031f7a44f"><div class="ttname"><a href="b2_settings_8h.html#a3a20e3b6a8b05633d911fea031f7a44f">b2_version</a></div><div class="ttdeci">b2Version b2_version</div><div class="ttdoc">Current version. </div><div class="ttdef"><b>Definition:</b> b2Settings.cpp:24</div></div>
<div class="ttc" id="structb2_version_html"><div class="ttname"><a href="structb2_version.html">b2Version</a></div><div class="ttdef"><b>Definition:</b> b2Settings.h:141</div></div>
<div class="ttc" id="structb2_version_html_a720da8e346364d1cb34d176125380b44"><div class="ttname"><a href="structb2_version.html#a720da8e346364d1cb34d176125380b44">b2Version::major</a></div><div class="ttdeci">int32 major</div><div class="ttdoc">significant changes </div><div class="ttdef"><b>Definition:</b> b2Settings.h:143</div></div>
<div class="ttc" id="structb2_version_html_a395cfe1434e348115d2ead3d72b88847"><div class="ttname"><a href="structb2_version.html#a395cfe1434e348115d2ead3d72b88847">b2Version::revision</a></div><div class="ttdeci">int32 revision</div><div class="ttdoc">bug fixes </div><div class="ttdef"><b>Definition:</b> b2Settings.h:145</div></div>
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