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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_f938a2b4566b4bd7e1dc8e6edc30956c.html">Collision</a></li><li class="navelem"><a class="el" href="dir_2b0aaca8962b4c18f14a1e758f920130.html">Shapes</a></li> </ul>
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<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_POLYGON_SHAPE_H</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#define B2_POLYGON_SHAPE_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 <Box2D/Collision/Shapes/b2Shape.h></span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> </div><div class="line"><a name="l00028"></a><span class="lineno"><a class="line" href="classb2_polygon_shape.html"> 28</a></span> <span class="keyword">class </span><a class="code" href="classb2_polygon_shape.html">b2PolygonShape</a> : <span class="keyword">public</span> <a class="code" href="classb2_shape.html">b2Shape</a></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> {</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <a class="code" href="classb2_polygon_shape.html">b2PolygonShape</a>();</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <a class="code" href="classb2_shape.html">b2Shape</a>* <a class="code" href="classb2_polygon_shape.html#a0a15ecf0b3710e265d2a8d385d9c36f0">Clone</a>(<a class="code" href="classb2_block_allocator.html">b2BlockAllocator</a>* allocator) <span class="keyword">const</span>;</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  int32 <a class="code" href="classb2_polygon_shape.html#aa8fba2b51d81111b7e681768093ac197">GetChildCount</a>() <span class="keyword">const</span>;</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> </div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keywordtype">void</span> <a class="code" href="classb2_polygon_shape.html#a4d7b35550509f570814b97325a68966b">Set</a>(<span class="keyword">const</span> <a class="code" href="structb2_vec2.html">b2Vec2</a>* points, int32 count);</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> </div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordtype">void</span> <a class="code" href="classb2_polygon_shape.html#a6bb90df8b4a40d1c53b64cc352a855dd">SetAsBox</a>(float32 hx, float32 hy);</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span> </div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordtype">void</span> <a class="code" href="classb2_polygon_shape.html#a6bb90df8b4a40d1c53b64cc352a855dd">SetAsBox</a>(float32 hx, float32 hy, <span class="keyword">const</span> <a class="code" href="structb2_vec2.html">b2Vec2</a>& center, float32 angle);</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span> </div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keywordtype">bool</span> <a class="code" href="classb2_polygon_shape.html#a1e70b4546c997628bbc8eeffe55c2423">TestPoint</a>(<span class="keyword">const</span> <a class="code" href="structb2_transform.html">b2Transform</a>& transform, <span class="keyword">const</span> <a class="code" href="structb2_vec2.html">b2Vec2</a>& p) <span class="keyword">const</span>;</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span> </div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keywordtype">bool</span> <a class="code" href="classb2_polygon_shape.html#a96b12c243a2ed1db4a965b93736622da">RayCast</a>(<a class="code" href="structb2_ray_cast_output.html">b2RayCastOutput</a>* output, <span class="keyword">const</span> <a class="code" href="structb2_ray_cast_input.html">b2RayCastInput</a>& input,</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keyword">const</span> <a class="code" href="structb2_transform.html">b2Transform</a>& transform, int32 childIndex) <span class="keyword">const</span>;</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span> </div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordtype">void</span> <a class="code" href="classb2_polygon_shape.html#a01f0739b15f657a355f1f4525e75dbfe">ComputeAABB</a>(<a class="code" href="structb2_a_a_b_b.html">b2AABB</a>* aabb, <span class="keyword">const</span> <a class="code" href="structb2_transform.html">b2Transform</a>& transform, int32 childIndex) <span class="keyword">const</span>;</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordtype">void</span> <a class="code" href="classb2_polygon_shape.html#a33e75858a1b9e26fdf7f723825cda878">ComputeMass</a>(<a class="code" href="structb2_mass_data.html">b2MassData</a>* massData, float32 density) <span class="keyword">const</span>;</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div><div class="line"><a name="l00072"></a><span class="lineno"><a class="line" href="classb2_polygon_shape.html#a1531f99f9dcab03929ea08beb3a79631"> 72</a></span>  int32 <a class="code" href="classb2_polygon_shape.html#a1531f99f9dcab03929ea08beb3a79631">GetVertexCount</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> m_count; }</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span> </div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keyword">const</span> <a class="code" href="structb2_vec2.html">b2Vec2</a>& <a class="code" href="classb2_polygon_shape.html#a12710c5caa9134f0af11f37dbedbd409">GetVertex</a>(int32 index) <span class="keyword">const</span>;</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span> </div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordtype">bool</span> <a class="code" href="classb2_polygon_shape.html#a135f4c20e17f10479e08f7befbd4d1f0">Validate</a>() <span class="keyword">const</span>;</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span> </div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <a class="code" href="structb2_vec2.html">b2Vec2</a> m_centroid;</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <a class="code" href="structb2_vec2.html">b2Vec2</a> m_vertices[<a class="code" href="b2_settings_8h.html#a09d71ee1993bee28b5b2e6d893b41884">b2_maxPolygonVertices</a>];</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <a class="code" href="structb2_vec2.html">b2Vec2</a> m_normals[<a class="code" href="b2_settings_8h.html#a09d71ee1993bee28b5b2e6d893b41884">b2_maxPolygonVertices</a>];</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  int32 m_count;</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span> };</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span> </div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="keyword">inline</span> b2PolygonShape::b2PolygonShape()</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span> {</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  m_type = e_polygon;</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  m_radius = <a class="code" href="b2_settings_8h.html#afc0f934dabffb1e83e081249133ad860">b2_polygonRadius</a>;</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  m_count = 0;</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  m_centroid.<a class="code" href="structb2_vec2.html#a5c6cbe27cfb29c6dbb29b9a3285b88d0">SetZero</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> </div><div class="line"><a name="l00095"></a><span class="lineno"><a class="line" href="classb2_polygon_shape.html#a12710c5caa9134f0af11f37dbedbd409"> 95</a></span> <span class="keyword">inline</span> <span class="keyword">const</span> <a class="code" href="structb2_vec2.html">b2Vec2</a>& <a class="code" href="classb2_polygon_shape.html#a12710c5caa9134f0af11f37dbedbd409">b2PolygonShape::GetVertex</a>(int32 index)<span class="keyword"> const</span></div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="keyword"></span>{</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  b2Assert(0 <= index && index < m_count);</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keywordflow">return</span> m_vertices[index];</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span> }</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span> </div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="preprocessor">#endif</span></div><div class="ttc" id="structb2_transform_html"><div class="ttname"><a href="structb2_transform.html">b2Transform</a></div><div class="ttdef"><b>Definition:</b> b2Math.h:350</div></div>
<div class="ttc" id="classb2_polygon_shape_html_a12710c5caa9134f0af11f37dbedbd409"><div class="ttname"><a href="classb2_polygon_shape.html#a12710c5caa9134f0af11f37dbedbd409">b2PolygonShape::GetVertex</a></div><div class="ttdeci">const b2Vec2 & GetVertex(int32 index) const</div><div class="ttdoc">Get a vertex by index. </div><div class="ttdef"><b>Definition:</b> b2PolygonShape.h:95</div></div>
<div class="ttc" id="classb2_polygon_shape_html_a33e75858a1b9e26fdf7f723825cda878"><div class="ttname"><a href="classb2_polygon_shape.html#a33e75858a1b9e26fdf7f723825cda878">b2PolygonShape::ComputeMass</a></div><div class="ttdeci">void ComputeMass(b2MassData *massData, float32 density) const</div><div class="ttdef"><b>Definition:</b> b2PolygonShape.cpp:358</div></div>
<div class="ttc" id="classb2_polygon_shape_html_a1e70b4546c997628bbc8eeffe55c2423"><div class="ttname"><a href="classb2_polygon_shape.html#a1e70b4546c997628bbc8eeffe55c2423">b2PolygonShape::TestPoint</a></div><div class="ttdeci">bool TestPoint(const b2Transform &transform, const b2Vec2 &p) const</div><div class="ttdef"><b>Definition:</b> b2PolygonShape.cpp:251</div></div>
<div class="ttc" id="classb2_polygon_shape_html_aa8fba2b51d81111b7e681768093ac197"><div class="ttname"><a href="classb2_polygon_shape.html#aa8fba2b51d81111b7e681768093ac197">b2PolygonShape::GetChildCount</a></div><div class="ttdeci">int32 GetChildCount() const</div><div class="ttdef"><b>Definition:</b> b2PolygonShape.cpp:69</div></div>
<div class="ttc" id="classb2_block_allocator_html"><div class="ttname"><a href="classb2_block_allocator.html">b2BlockAllocator</a></div><div class="ttdef"><b>Definition:</b> b2BlockAllocator.h:35</div></div>
<div class="ttc" id="structb2_mass_data_html"><div class="ttname"><a href="structb2_mass_data.html">b2MassData</a></div><div class="ttdoc">This holds the mass data computed for a shape. </div><div class="ttdef"><b>Definition:</b> b2Shape.h:27</div></div>
<div class="ttc" id="classb2_shape_html"><div class="ttname"><a href="classb2_shape.html">b2Shape</a></div><div class="ttdef"><b>Definition:</b> b2Shape.h:42</div></div>
<div class="ttc" id="classb2_polygon_shape_html_a6bb90df8b4a40d1c53b64cc352a855dd"><div class="ttname"><a href="classb2_polygon_shape.html#a6bb90df8b4a40d1c53b64cc352a855dd">b2PolygonShape::SetAsBox</a></div><div class="ttdeci">void SetAsBox(float32 hx, float32 hy)</div><div class="ttdef"><b>Definition:</b> b2PolygonShape.cpp:30</div></div>
<div class="ttc" id="classb2_polygon_shape_html"><div class="ttname"><a href="classb2_polygon_shape.html">b2PolygonShape</a></div><div class="ttdef"><b>Definition:</b> b2PolygonShape.h:28</div></div>
<div class="ttc" id="structb2_ray_cast_output_html"><div class="ttname"><a href="structb2_ray_cast_output.html">b2RayCastOutput</a></div><div class="ttdef"><b>Definition:</b> b2Collision.h:155</div></div>
<div class="ttc" id="structb2_vec2_html_a5c6cbe27cfb29c6dbb29b9a3285b88d0"><div class="ttname"><a href="structb2_vec2.html#a5c6cbe27cfb29c6dbb29b9a3285b88d0">b2Vec2::SetZero</a></div><div class="ttdeci">void SetZero()</div><div class="ttdoc">Set this vector to all zeros. </div><div class="ttdef"><b>Definition:</b> b2Math.h:62</div></div>
<div class="ttc" id="classb2_polygon_shape_html_a96b12c243a2ed1db4a965b93736622da"><div class="ttname"><a href="classb2_polygon_shape.html#a96b12c243a2ed1db4a965b93736622da">b2PolygonShape::RayCast</a></div><div class="ttdeci">bool RayCast(b2RayCastOutput *output, const b2RayCastInput &input, const b2Transform &transform, int32 childIndex) const</div><div class="ttdoc">Implement b2Shape. </div><div class="ttdef"><b>Definition:</b> b2PolygonShape.cpp:267</div></div>
<div class="ttc" id="b2_settings_8h_html_afc0f934dabffb1e83e081249133ad860"><div class="ttname"><a href="b2_settings_8h.html#afc0f934dabffb1e83e081249133ad860">b2_polygonRadius</a></div><div class="ttdeci">#define b2_polygonRadius</div><div class="ttdef"><b>Definition:</b> b2Settings.h:77</div></div>
<div class="ttc" id="structb2_a_a_b_b_html"><div class="ttname"><a href="structb2_a_a_b_b.html">b2AABB</a></div><div class="ttdoc">An axis aligned bounding box. </div><div class="ttdef"><b>Definition:</b> b2Collision.h:162</div></div>
<div class="ttc" id="classb2_polygon_shape_html_a135f4c20e17f10479e08f7befbd4d1f0"><div class="ttname"><a href="classb2_polygon_shape.html#a135f4c20e17f10479e08f7befbd4d1f0">b2PolygonShape::Validate</a></div><div class="ttdeci">bool Validate() const</div><div class="ttdef"><b>Definition:</b> b2PolygonShape.cpp:441</div></div>
<div class="ttc" id="structb2_ray_cast_input_html"><div class="ttname"><a href="structb2_ray_cast_input.html">b2RayCastInput</a></div><div class="ttdoc">Ray-cast input data. The ray extends from p1 to p1 + maxFraction * (p2 - p1). </div><div class="ttdef"><b>Definition:</b> b2Collision.h:147</div></div>
<div class="ttc" id="classb2_polygon_shape_html_a1531f99f9dcab03929ea08beb3a79631"><div class="ttname"><a href="classb2_polygon_shape.html#a1531f99f9dcab03929ea08beb3a79631">b2PolygonShape::GetVertexCount</a></div><div class="ttdeci">int32 GetVertexCount() const</div><div class="ttdoc">Get the vertex count. </div><div class="ttdef"><b>Definition:</b> b2PolygonShape.h:72</div></div>
<div class="ttc" id="classb2_polygon_shape_html_a01f0739b15f657a355f1f4525e75dbfe"><div class="ttname"><a href="classb2_polygon_shape.html#a01f0739b15f657a355f1f4525e75dbfe">b2PolygonShape::ComputeAABB</a></div><div class="ttdeci">void ComputeAABB(b2AABB *aabb, const b2Transform &transform, int32 childIndex) const</div><div class="ttdef"><b>Definition:</b> b2PolygonShape.cpp:339</div></div>
<div class="ttc" id="classb2_polygon_shape_html_a4d7b35550509f570814b97325a68966b"><div class="ttname"><a href="classb2_polygon_shape.html#a4d7b35550509f570814b97325a68966b">b2PolygonShape::Set</a></div><div class="ttdeci">void Set(const b2Vec2 *points, int32 count)</div><div class="ttdef"><b>Definition:</b> b2PolygonShape.cpp:120</div></div>
<div class="ttc" id="structb2_vec2_html"><div class="ttname"><a href="structb2_vec2.html">b2Vec2</a></div><div class="ttdoc">A 2D column vector. </div><div class="ttdef"><b>Definition:</b> b2Math.h:53</div></div>
<div class="ttc" id="classb2_polygon_shape_html_a0a15ecf0b3710e265d2a8d385d9c36f0"><div class="ttname"><a href="classb2_polygon_shape.html#a0a15ecf0b3710e265d2a8d385d9c36f0">b2PolygonShape::Clone</a></div><div class="ttdeci">b2Shape * Clone(b2BlockAllocator *allocator) const</div><div class="ttdoc">Implement b2Shape. </div><div class="ttdef"><b>Definition:</b> b2PolygonShape.cpp:22</div></div>
<div class="ttc" id="b2_settings_8h_html_a09d71ee1993bee28b5b2e6d893b41884"><div class="ttname"><a href="b2_settings_8h.html#a09d71ee1993bee28b5b2e6d893b41884">b2_maxPolygonVertices</a></div><div class="ttdeci">#define b2_maxPolygonVertices</div><div class="ttdef"><b>Definition:</b> b2Settings.h:54</div></div>
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