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<div id="projectname">Chipmunk2D Pro API Reference
 <span id="projectnumber">7.0.1</span>
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<li class="navelem"><a class="el" href="dir_d44c64559bbebec7f509842c48db8b23.html">include</a></li><li class="navelem"><a class="el" href="dir_b3ea4b336b4fb233f74b44c85fbba508.html">chipmunk</a></li> </ul>
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<div class="title">chipmunk.h</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/* Copyright (c) 2013 Scott Lembcke and Howling Moon Software</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * </span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * Permission is hereby granted, free of charge, to any person obtaining a copy</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * of this software and associated documentation files (the "Software"), to deal</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * in the Software without restriction, including without limitation the rights</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * copies of the Software, and to permit persons to whom the Software is</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * furnished to do so, subject to the following conditions:</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * </span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * The above copyright notice and this permission notice shall be included in</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * all copies or substantial portions of the Software.</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * </span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * SOFTWARE.</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> */</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">#ifndef CHIPMUNK_H</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor"></span><span class="preprocessor">#define CHIPMUNK_H</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <stdlib.h></span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <math.h></span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#ifdef WIN32</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor"></span> <span class="comment">// For alloca().</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor"> #include <malloc.h></span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor"> #define CP_EXPORT __declspec(dllexport)</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor"></span><span class="preprocessor">#else</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor"></span><span class="preprocessor"> #include <alloca.h></span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor"> #define CP_EXPORT</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor"></span><span class="keyword">extern</span> <span class="stringliteral">"C"</span> {</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment">// NUKE</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="preprocessor">#ifndef CP_ALLOW_PRIVATE_ACCESS</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="preprocessor"></span><span class="preprocessor"> #define CP_ALLOW_PRIVATE_ACCESS 0</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="preprocessor">#if CP_ALLOW_PRIVATE_ACCESS == 1</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="preprocessor"></span><span class="preprocessor"> #define CP_PRIVATE(__symbol__) __symbol__</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="preprocessor"></span><span class="preprocessor">#else</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="preprocessor"></span><span class="preprocessor"> #define CP_PRIVATE(__symbol__) __symbol__##_private</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> CP_EXPORT <span class="keywordtype">void</span> cpMessage(<span class="keyword">const</span> <span class="keywordtype">char</span> *condition, <span class="keyword">const</span> <span class="keywordtype">char</span> *file, <span class="keywordtype">int</span> line, <span class="keywordtype">int</span> isError, <span class="keywordtype">int</span> isHardError, <span class="keyword">const</span> <span class="keywordtype">char</span> *message, ...);</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="preprocessor">#ifdef NDEBUG</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="preprocessor"></span><span class="preprocessor"> #define cpAssertWarn(__condition__, ...)</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="preprocessor"></span><span class="preprocessor"> #define cpAssertSoft(__condition__, ...)</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="preprocessor"></span><span class="preprocessor">#else</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="preprocessor"></span><span class="preprocessor"> #define cpAssertSoft(__condition__, ...) if(!(__condition__)){cpMessage(#__condition__, __FILE__, __LINE__, 1, 0, __VA_ARGS__); abort();}</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="preprocessor"></span><span class="preprocessor"> #define cpAssertWarn(__condition__, ...) if(!(__condition__)) cpMessage(#__condition__, __FILE__, __LINE__, 0, 0, __VA_ARGS__)</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment">// Hard assertions are used in situations where the program definitely will crash anyway, and the reason is inexpensive to detect.</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="preprocessor">#define cpAssertHard(__condition__, ...) if(!(__condition__)){cpMessage(#__condition__, __FILE__, __LINE__, 1, 1, __VA_ARGS__); abort();}</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="preprocessor">#include "chipmunk_types.h"</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"> 68</span> </div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="preprocessor">#ifndef CP_BUFFER_BYTES</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"><a class="code" href="group__misc.html#ga6d034fec4d7962b6f20f9e243527c560"> 71</a></span> <span class="preprocessor"></span><span class="preprocessor"> #define CP_BUFFER_BYTES (32*1024)</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="preprocessor">#ifndef cpcalloc</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00076"></a><span class="lineno"><a class="code" href="group__misc.html#gac88bab87ecc7db6cc222679bf6082e9b"> 76</a></span> <span class="preprocessor"> #define cpcalloc calloc</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="preprocessor">#ifndef cprealloc</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00081"></a><span class="lineno"><a class="code" href="group__misc.html#gab3544b888840ed34e49bb0559d6849a8"> 81</a></span> <span class="preprocessor"> #define cprealloc realloc</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="preprocessor">#ifndef cpfree</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00086"></a><span class="lineno"><a class="code" href="group__misc.html#ga14627263deb67605201281bac734eb04"> 86</a></span> <span class="preprocessor"> #define cpfree free</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structcp_array.html">cpArray</a> <a class="code" href="structcp_array.html">cpArray</a>;</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="keyword">typedef</span> <span class="keyword">struct </span>cpHashSet cpHashSet;</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structcp_body.html">cpBody</a> <a class="code" href="structcp_body.html">cpBody</a>;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> </div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structcp_shape.html">cpShape</a> <a class="code" href="structcp_shape.html">cpShape</a>;</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structcp_circle_shape.html">cpCircleShape</a> <a class="code" href="structcp_circle_shape.html">cpCircleShape</a>;</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structcp_segment_shape.html">cpSegmentShape</a> <a class="code" href="structcp_segment_shape.html">cpSegmentShape</a>;</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structcp_poly_shape.html">cpPolyShape</a> <a class="code" href="structcp_poly_shape.html">cpPolyShape</a>;</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structcp_constraint.html">cpConstraint</a> <a class="code" href="structcp_constraint.html">cpConstraint</a>;</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structcp_pin_joint.html">cpPinJoint</a> <a class="code" href="structcp_pin_joint.html">cpPinJoint</a>;</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structcp_slide_joint.html">cpSlideJoint</a> <a class="code" href="structcp_slide_joint.html">cpSlideJoint</a>;</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structcp_pivot_joint.html">cpPivotJoint</a> <a class="code" href="structcp_pivot_joint.html">cpPivotJoint</a>;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structcp_groove_joint.html">cpGrooveJoint</a> <a class="code" href="structcp_groove_joint.html">cpGrooveJoint</a>;</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structcp_damped_spring.html">cpDampedSpring</a> <a class="code" href="structcp_damped_spring.html">cpDampedSpring</a>;</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structcp_damped_rotary_spring.html">cpDampedRotarySpring</a> <a class="code" href="structcp_damped_rotary_spring.html">cpDampedRotarySpring</a>;</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structcp_rotary_limit_joint.html">cpRotaryLimitJoint</a> <a class="code" href="structcp_rotary_limit_joint.html">cpRotaryLimitJoint</a>;</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structcp_ratchet_joint.html">cpRatchetJoint</a> <a class="code" href="structcp_ratchet_joint.html">cpRatchetJoint</a>;</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structcp_gear_joint.html">cpGearJoint</a> <a class="code" href="structcp_gear_joint.html">cpGearJoint</a>;</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="keyword">typedef</span> <span class="keyword">struct </span>cpSimpleMotorJoint cpSimpleMotorJoint;</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> </div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structcp_collision_handler.html" title="Struct that holds function callback pointers to configure custom collision handling.">cpCollisionHandler</a> <a class="code" href="structcp_collision_handler.html" title="Struct that holds function callback pointers to configure custom collision handling.">cpCollisionHandler</a>;</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structcp_contact_point_set.html" title="A struct that wraps up the important collision data for an arbiter.">cpContactPointSet</a> <a class="code" href="structcp_contact_point_set.html" title="A struct that wraps up the important collision data for an arbiter.">cpContactPointSet</a>;</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structcp_arbiter.html">cpArbiter</a> <a class="code" href="structcp_arbiter.html">cpArbiter</a>;</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> </div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structcp_space.html">cpSpace</a> <a class="code" href="structcp_space.html">cpSpace</a>;</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="preprocessor">#include "cpVect.h"</span></div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="preprocessor">#include "cpBB.h"</span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="preprocessor">#include "cpTransform.h"</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="preprocessor">#include "cpSpatialIndex.h"</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> </div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="preprocessor">#include "cpArbiter.h"</span> </div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> </div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="preprocessor">#include "cpBody.h"</span></div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="preprocessor">#include "cpShape.h"</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="preprocessor">#include "cpPolyShape.h"</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="preprocessor">#include "cpConstraint.h"</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> </div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="preprocessor">#include "cpSpace.h"</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> </div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="comment">// Chipmunk 7.0.1</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="preprocessor">#define CP_VERSION_MAJOR 7</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="preprocessor"></span><span class="preprocessor">#define CP_VERSION_MINOR 0</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="preprocessor"></span><span class="preprocessor">#define CP_VERSION_RELEASE 1</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> CP_EXPORT <span class="keyword">extern</span> <span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code" href="group__misc.html#gacecd153caab362b7e2e33b4f37a0fe55" title="Version string.">cpVersionString</a>;</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> </div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> CP_EXPORT <a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> <a class="code" href="group__misc.html#gaf1dfe63f43b3dd42e47f37f16ae2dfe4" title="Calculate the moment of inertia for a circle.">cpMomentForCircle</a>(<a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> m, <a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> r1, <a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> r2, <a class="code" href="structcp_vect.html">cpVect</a> offset);</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> </div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> CP_EXPORT <a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> <a class="code" href="group__misc.html#ga9293a100703445eed36e8673eefe42a1" title="Calculate area of a hollow circle.">cpAreaForCircle</a>(<a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> r1, <a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> r2);</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> </div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> CP_EXPORT <a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> <a class="code" href="group__misc.html#ga1df4d84f2b6ab3cb74d790b55e6a16d4" title="Calculate the moment of inertia for a line segment.">cpMomentForSegment</a>(<a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> m, <a class="code" href="structcp_vect.html">cpVect</a> a, <a class="code" href="structcp_vect.html">cpVect</a> b, <a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> radius);</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span> </div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> CP_EXPORT <a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> <a class="code" href="group__misc.html#ga5749ef4558e38005cea36d5eac560ca5" title="Calculate the area of a fattened (capsule shaped) line segment.">cpAreaForSegment</a>(<a class="code" href="structcp_vect.html">cpVect</a> a, <a class="code" href="structcp_vect.html">cpVect</a> b, <a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> radius);</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> </div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> CP_EXPORT <a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> <a class="code" href="group__misc.html#ga07f110041cb818aa6c19e41623f5054e" title="Calculate the moment of inertia for a solid polygon shape assuming it's center of gravity is at it's ...">cpMomentForPoly</a>(<a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> m, <span class="keywordtype">int</span> count, <span class="keyword">const</span> <a class="code" href="structcp_vect.html">cpVect</a> *verts, <a class="code" href="structcp_vect.html">cpVect</a> offset, <a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> radius);</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> </div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> CP_EXPORT <a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> <a class="code" href="group__misc.html#ga916a74d85ac37e3f5577adddad05a0bc" title="Calculate the signed area of a polygon.">cpAreaForPoly</a>(<span class="keyword">const</span> <span class="keywordtype">int</span> count, <span class="keyword">const</span> <a class="code" href="structcp_vect.html">cpVect</a> *verts, <a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> radius);</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> </div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> CP_EXPORT <a class="code" href="structcp_vect.html">cpVect</a> <a class="code" href="group__misc.html#gaaeaa99c27ff452c3bb957cf3d82d4f64" title="Calculate the natural centroid of a polygon.">cpCentroidForPoly</a>(<span class="keyword">const</span> <span class="keywordtype">int</span> count, <span class="keyword">const</span> <a class="code" href="structcp_vect.html">cpVect</a> *verts);</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> </div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> CP_EXPORT <a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> <a class="code" href="group__misc.html#gaf7b38a68ad64e02f7542eaab640e6743" title="Calculate the moment of inertia for a solid box.">cpMomentForBox</a>(<a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> m, <a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> width, <a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> height);</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> </div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> CP_EXPORT <a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> <a class="code" href="group__misc.html#ga435b78dde186a991f207df58d88e88d2" title="Calculate the moment of inertia for a solid box.">cpMomentForBox2</a>(<a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> m, <a class="code" href="structcp_b_b.html" title="Chipmunk's axis-aligned 2D bounding box type. (left, bottom, right, top)">cpBB</a> box);</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> </div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span> CP_EXPORT <span class="keywordtype">int</span> <a class="code" href="group__misc.html#ga4468d521319fa699354b8d0e1d9532fe" title="Calculate the convex hull of a given set of points.">cpConvexHull</a>(<span class="keywordtype">int</span> count, <span class="keyword">const</span> <a class="code" href="structcp_vect.html">cpVect</a> *verts, <a class="code" href="structcp_vect.html">cpVect</a> *result, <span class="keywordtype">int</span> *first, <a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> tol);</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> </div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> <span class="preprocessor">#ifdef _MSC_VER</span></div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> <span class="preprocessor"></span><span class="preprocessor">#include "malloc.h"</span></div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00185"></a><span class="lineno"><a class="code" href="group__misc.html#ga9abe29a1fe6d1f2041e95f2fb2e2ce1c"> 185</a></span> <span class="preprocessor">#define CP_CONVEX_HULL(__count__, __verts__, __count_var__, __verts_var__) \</span></div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span> <span class="preprocessor">cpVect *__verts_var__ = (cpVect *)alloca(__count__*sizeof(cpVect)); \</span></div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> <span class="preprocessor">int __count_var__ = cpConvexHull(__count__, __verts__, __verts_var__, NULL, 0.0); \</span></div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span> <span class="keyword">static</span> <span class="keyword">inline</span> <a class="code" href="structcp_vect.html">cpVect</a></div>
<div class="line"><a name="l00191"></a><span class="lineno"><a class="code" href="group__misc.html#ga9511599966ddc56c0fe81c3a943db25e"> 191</a></span> <a class="code" href="group__misc.html#ga9511599966ddc56c0fe81c3a943db25e" title="Returns the closest point on the line segment ab, to the point p.">cpClosetPointOnSegment</a>(<span class="keyword">const</span> <a class="code" href="structcp_vect.html">cpVect</a> p, <span class="keyword">const</span> <a class="code" href="structcp_vect.html">cpVect</a> a, <span class="keyword">const</span> <a class="code" href="structcp_vect.html">cpVect</a> b)</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> {</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <a class="code" href="structcp_vect.html">cpVect</a> delta = <a class="code" href="group__cp_vect.html#gafd88a5bbd4b5de25aa31e44fdf01e259" title="Subtract two vectors.">cpvsub</a>(a, b);</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> t = <a class="code" href="group__basic_types.html#ga38c3cd79013de3c7452c02d4ae07f73e" title="Clamp f to be between 0 and 1.">cpfclamp01</a>(<a class="code" href="group__cp_vect.html#ga3e76653b018d47f864c339092cf482f1" title="Vector dot product.">cpvdot</a>(delta, <a class="code" href="group__cp_vect.html#gafd88a5bbd4b5de25aa31e44fdf01e259" title="Subtract two vectors.">cpvsub</a>(p, b))/<a class="code" href="group__cp_vect.html#gadfad8e091ac399cdc377a9c475f7ef0d" title="Returns the squared length of v. Faster than cpvlength() when you only need to compare lengths...">cpvlengthsq</a>(delta));</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keywordflow">return</span> <a class="code" href="group__cp_vect.html#ga167e0bde13a745299bd5d4164d7c796b" title="Add two vectors.">cpvadd</a>(b, <a class="code" href="group__cp_vect.html#ga717188d925550baf62188b5e1e602047" title="Scalar multiplication.">cpvmult</a>(delta, t));</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> }</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> </div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span> <span class="preprocessor">#if defined(__has_extension)</span></div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span> <span class="preprocessor"></span><span class="preprocessor">#if __has_extension(blocks)</span></div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="preprocessor"></span><span class="comment">// Define alternate block based alternatives for a few of the callback heavy functions.</span></div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <span class="comment">// Collision handlers are post-step callbacks are not included to avoid memory management issues.</span></div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span> <span class="comment">// If you want to use blocks for those and are aware of how to correctly manage the memory, the implementation is trivial. </span></div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> </div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span> <span class="keywordtype">void</span> cpSpaceEachBody_b(<a class="code" href="structcp_space.html">cpSpace</a> *space, <span class="keywordtype">void</span> (^block)(<a class="code" href="structcp_body.html">cpBody</a> *body));</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span> <span class="keywordtype">void</span> cpSpaceEachShape_b(<a class="code" href="structcp_space.html">cpSpace</a> *space, <span class="keywordtype">void</span> (^block)(<a class="code" href="structcp_shape.html">cpShape</a> *shape));</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span> <span class="keywordtype">void</span> cpSpaceEachConstraint_b(<a class="code" href="structcp_space.html">cpSpace</a> *space, <span class="keywordtype">void</span> (^block)(<a class="code" href="structcp_constraint.html">cpConstraint</a> *constraint));</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> </div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span> <span class="keywordtype">void</span> cpBodyEachShape_b(<a class="code" href="structcp_body.html">cpBody</a> *body, <span class="keywordtype">void</span> (^block)(<a class="code" href="structcp_shape.html">cpShape</a> *shape));</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span> <span class="keywordtype">void</span> cpBodyEachConstraint_b(<a class="code" href="structcp_body.html">cpBody</a> *body, <span class="keywordtype">void</span> (^block)(<a class="code" href="structcp_constraint.html">cpConstraint</a> *constraint));</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span> <span class="keywordtype">void</span> cpBodyEachArbiter_b(<a class="code" href="structcp_body.html">cpBody</a> *body, <span class="keywordtype">void</span> (^block)(<a class="code" href="structcp_arbiter.html">cpArbiter</a> *arbiter));</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span> </div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> <span class="keyword">typedef</span> void (^cpSpacePointQueryBlock)(<a class="code" href="structcp_shape.html">cpShape</a> *shape, <a class="code" href="structcp_vect.html">cpVect</a> point, <a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> distance, <a class="code" href="structcp_vect.html">cpVect</a> gradient);</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> <span class="keywordtype">void</span> cpSpacePointQuery_b(<a class="code" href="structcp_space.html">cpSpace</a> *space, <a class="code" href="structcp_vect.html">cpVect</a> point, <a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> maxDistance, <a class="code" href="structcp_shape_filter.html" title="Fast collision filtering type that is used to determine if two objects collide before calling collisi...">cpShapeFilter</a> filter, cpSpacePointQueryBlock block);</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> </div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span> <span class="keyword">typedef</span> void (^cpSpaceSegmentQueryBlock)(<a class="code" href="structcp_shape.html">cpShape</a> *shape, <a class="code" href="structcp_vect.html">cpVect</a> point, <a class="code" href="structcp_vect.html">cpVect</a> normal, <a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> alpha);</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span> <span class="keywordtype">void</span> cpSpaceSegmentQuery_b(<a class="code" href="structcp_space.html">cpSpace</a> *space, <a class="code" href="structcp_vect.html">cpVect</a> start, <a class="code" href="structcp_vect.html">cpVect</a> end, <a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> radius, <a class="code" href="structcp_shape_filter.html" title="Fast collision filtering type that is used to determine if two objects collide before calling collisi...">cpShapeFilter</a> filter, cpSpaceSegmentQueryBlock block);</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span> </div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span> <span class="keyword">typedef</span> void (^cpSpaceBBQueryBlock)(<a class="code" href="structcp_shape.html">cpShape</a> *shape);</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span> <span class="keywordtype">void</span> cpSpaceBBQuery_b(<a class="code" href="structcp_space.html">cpSpace</a> *space, <a class="code" href="structcp_b_b.html" title="Chipmunk's axis-aligned 2D bounding box type. (left, bottom, right, top)">cpBB</a> bb, <a class="code" href="structcp_shape_filter.html" title="Fast collision filtering type that is used to determine if two objects collide before calling collisi...">cpShapeFilter</a> filter, cpSpaceBBQueryBlock block);</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span> </div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span> <span class="keyword">typedef</span> void (^cpSpaceShapeQueryBlock)(<a class="code" href="structcp_shape.html">cpShape</a> *shape, <a class="code" href="structcp_contact_point_set.html" title="A struct that wraps up the important collision data for an arbiter.">cpContactPointSet</a> *points);</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span> <a class="code" href="group__basic_types.html#gabc5e752c48f3449ca26ef413ecbd647e" title="Chipmunk's boolean type.">cpBool</a> cpSpaceShapeQuery_b(<a class="code" href="structcp_space.html">cpSpace</a> *space, <a class="code" href="structcp_shape.html">cpShape</a> *shape, cpSpaceShapeQueryBlock block);</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span> </div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span> </div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span> </div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span> <span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span> <span class="preprocessor"></span>}</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span> </div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span> <span class="keyword">static</span> <span class="keyword">inline</span> <a class="code" href="structcp_vect.html">cpVect</a> operator *(<span class="keyword">const</span> <a class="code" href="structcp_vect.html">cpVect</a> v, <span class="keyword">const</span> <a class="code" href="group__basic_types.html#gac1ed65573e035bf892505768c852d8d3" title="Chipmunk's floating point type.">cpFloat</a> s){<span class="keywordflow">return</span> <a class="code" href="group__cp_vect.html#ga717188d925550baf62188b5e1e602047" title="Scalar multiplication.">cpvmult</a>(v, s);}</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span> <span class="keyword">static</span> <span class="keyword">inline</span> <a class="code" href="structcp_vect.html">cpVect</a> operator +(<span class="keyword">const</span> <a class="code" href="structcp_vect.html">cpVect</a> v1, <span class="keyword">const</span> <a class="code" href="structcp_vect.html">cpVect</a> v2){<span class="keywordflow">return</span> <a class="code" href="group__cp_vect.html#ga167e0bde13a745299bd5d4164d7c796b" title="Add two vectors.">cpvadd</a>(v1, v2);}</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span> <span class="keyword">static</span> <span class="keyword">inline</span> <a class="code" href="structcp_vect.html">cpVect</a> operator -(<span class="keyword">const</span> <a class="code" href="structcp_vect.html">cpVect</a> v1, <span class="keyword">const</span> <a class="code" href="structcp_vect.html">cpVect</a> v2){<span class="keywordflow">return</span> <a class="code" href="group__cp_vect.html#gafd88a5bbd4b5de25aa31e44fdf01e259" title="Subtract two vectors.">cpvsub</a>(v1, v2);}</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span> <span class="keyword">static</span> <span class="keyword">inline</span> <a class="code" href="group__basic_types.html#gabc5e752c48f3449ca26ef413ecbd647e" title="Chipmunk's boolean type.">cpBool</a> operator ==(<span class="keyword">const</span> <a class="code" href="structcp_vect.html">cpVect</a> v1, <span class="keyword">const</span> <a class="code" href="structcp_vect.html">cpVect</a> v2){<span class="keywordflow">return</span> <a class="code" href="group__cp_vect.html#gae5081f933bcc2c64c76d7e7caaf2d631" title="Check if two vectors are equal. (Be careful when comparing floating point numbers!)">cpveql</a>(v1, v2);}</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span> <span class="keyword">static</span> <span class="keyword">inline</span> <a class="code" href="structcp_vect.html">cpVect</a> operator -(<span class="keyword">const</span> <a class="code" href="structcp_vect.html">cpVect</a> v){<span class="keywordflow">return</span> <a class="code" href="group__cp_vect.html#gab79a1d52de40bf0f7db5134da436426b" title="Negate a vector.">cpvneg</a>(v);}</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span> </div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
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