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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="title">b2ChainShape.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">/*</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">* Copyright (c) 2006-2010 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_CHAIN_SHAPE_H</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#define B2_CHAIN_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="l00024"></a><span class="lineno"> 24</span> <span class="keyword">class </span><a class="code" href="classb2_edge_shape.html">b2EdgeShape</a>;</div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div><div class="line"><a name="l00032"></a><span class="lineno"><a class="line" href="classb2_chain_shape.html"> 32</a></span> <span class="keyword">class </span><a class="code" href="classb2_chain_shape.html">b2ChainShape</a> : <span class="keyword">public</span> <a class="code" href="classb2_shape.html">b2Shape</a></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> {</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <a class="code" href="classb2_chain_shape.html">b2ChainShape</a>();</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <a class="code" href="classb2_chain_shape.html#a8c032394f5a85e7fc425a437e7689a18">~b2ChainShape</a>();</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keywordtype">void</span> <a class="code" href="classb2_chain_shape.html#a434d4b61ab15726302ec5ad484011c33">Clear</a>();</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordtype">void</span> <a class="code" href="classb2_chain_shape.html#ac257742a52cac391e25962a4c703fb06">CreateLoop</a>(<span class="keyword">const</span> <a class="code" href="structb2_vec2.html">b2Vec2</a>* vertices, int32 count);</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> </div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordtype">void</span> <a class="code" href="classb2_chain_shape.html#aa0977339b743c05f2179939ccc38e7e0">CreateChain</a>(<span class="keyword">const</span> <a class="code" href="structb2_vec2.html">b2Vec2</a>* vertices, int32 count);</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordtype">void</span> <a class="code" href="classb2_chain_shape.html#aeb2ddbe0c52a98885e91b7c8f597315b">SetPrevVertex</a>(<span class="keyword">const</span> <a class="code" href="structb2_vec2.html">b2Vec2</a>& prevVertex);</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span> </div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keywordtype">void</span> <a class="code" href="classb2_chain_shape.html#a15c7c2821a52266ef57621ac7d34a95f">SetNextVertex</a>(<span class="keyword">const</span> <a class="code" href="structb2_vec2.html">b2Vec2</a>& nextVertex);</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>  <a class="code" href="classb2_shape.html">b2Shape</a>* <a class="code" href="classb2_chain_shape.html#ac72d2e67c739a1640e9ee751afe9bbe8">Clone</a>(<a class="code" href="classb2_block_allocator.html">b2BlockAllocator</a>* allocator) <span class="keyword">const</span>;</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span> </div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  int32 <a class="code" href="classb2_chain_shape.html#a371b90f907f3b22e26db4d5d24560496">GetChildCount</a>() <span class="keyword">const</span>;</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span> </div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordtype">void</span> <a class="code" href="classb2_chain_shape.html#abfe7f836d3c32dc06b920df61a74f412">GetChildEdge</a>(<a class="code" href="classb2_edge_shape.html">b2EdgeShape</a>* edge, int32 index) <span class="keyword">const</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"> 72</span>  <span class="keywordtype">bool</span> <a class="code" href="classb2_chain_shape.html#a2d2d59b49c2611ad65ed68b0943d642d">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="l00073"></a><span class="lineno"> 73</span> </div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordtype">bool</span> <a class="code" href="classb2_chain_shape.html#a2ca535a3b3d1e54f5572a3ee617dac19">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="l00076"></a><span class="lineno"> 76</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="l00077"></a><span class="lineno"> 77</span> </div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordtype">void</span> <a class="code" href="classb2_chain_shape.html#a612caee9cc6a62dec501a6b6059c13a8">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="l00080"></a><span class="lineno"> 80</span> </div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordtype">void</span> <a class="code" href="classb2_chain_shape.html#a55efeb6d4005c1ca4b01cbcc5d7369db">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="l00084"></a><span class="lineno"> 84</span> </div><div class="line"><a name="l00086"></a><span class="lineno"><a class="line" href="classb2_chain_shape.html#a481116a6886fb3880b13e55c966579da"> 86</a></span>  <a class="code" href="structb2_vec2.html">b2Vec2</a>* <a class="code" href="classb2_chain_shape.html#a481116a6886fb3880b13e55c966579da">m_vertices</a>;</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div><div class="line"><a name="l00089"></a><span class="lineno"><a class="line" href="classb2_chain_shape.html#ab2ad711781e6ac81179074e90e0e058b"> 89</a></span>  int32 <a class="code" href="classb2_chain_shape.html#ab2ad711781e6ac81179074e90e0e058b">m_count</a>;</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span> </div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <a class="code" href="structb2_vec2.html">b2Vec2</a> m_prevVertex, m_nextVertex;</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordtype">bool</span> m_hasPrevVertex, m_hasNextVertex;</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"> 95</span> <span class="keyword">inline</span> b2ChainShape::b2ChainShape()</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span> {</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  m_type = e_chain;</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  m_radius = <a class="code" href="b2_settings_8h.html#afc0f934dabffb1e83e081249133ad860">b2_polygonRadius</a>;</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <a class="code" href="classb2_chain_shape.html#a481116a6886fb3880b13e55c966579da">m_vertices</a> = NULL;</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <a class="code" href="classb2_chain_shape.html#ab2ad711781e6ac81179074e90e0e058b">m_count</a> = 0;</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  m_hasPrevVertex = <span class="keyword">false</span>;</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  m_hasNextVertex = <span class="keyword">false</span>;</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span> }</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span> </div><div class="line"><a name="l00105"></a><span class="lineno"> 105</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_chain_shape_html"><div class="ttname"><a href="classb2_chain_shape.html">b2ChainShape</a></div><div class="ttdef"><b>Definition:</b> b2ChainShape.h:32</div></div>
<div class="ttc" id="classb2_chain_shape_html_a55efeb6d4005c1ca4b01cbcc5d7369db"><div class="ttname"><a href="classb2_chain_shape.html#a55efeb6d4005c1ca4b01cbcc5d7369db">b2ChainShape::ComputeMass</a></div><div class="ttdeci">void ComputeMass(b2MassData *massData, float32 density) const</div><div class="ttdef"><b>Definition:</b> b2ChainShape.cpp:186</div></div>
<div class="ttc" id="classb2_chain_shape_html_a434d4b61ab15726302ec5ad484011c33"><div class="ttname"><a href="classb2_chain_shape.html#a434d4b61ab15726302ec5ad484011c33">b2ChainShape::Clear</a></div><div class="ttdeci">void Clear()</div><div class="ttdoc">Clear all data. </div><div class="ttdef"><b>Definition:</b> b2ChainShape.cpp:29</div></div>
<div class="ttc" id="classb2_chain_shape_html_ac72d2e67c739a1640e9ee751afe9bbe8"><div class="ttname"><a href="classb2_chain_shape.html#ac72d2e67c739a1640e9ee751afe9bbe8">b2ChainShape::Clone</a></div><div class="ttdeci">b2Shape * Clone(b2BlockAllocator *allocator) const</div><div class="ttdoc">Implement b2Shape. Vertices are cloned using b2Alloc. </div><div class="ttdef"><b>Definition:</b> b2ChainShape.cpp:91</div></div>
<div class="ttc" id="classb2_chain_shape_html_aa0977339b743c05f2179939ccc38e7e0"><div class="ttname"><a href="classb2_chain_shape.html#aa0977339b743c05f2179939ccc38e7e0">b2ChainShape::CreateChain</a></div><div class="ttdeci">void CreateChain(const b2Vec2 *vertices, int32 count)</div><div class="ttdef"><b>Definition:</b> b2ChainShape.cpp:58</div></div>
<div class="ttc" id="classb2_chain_shape_html_a2ca535a3b3d1e54f5572a3ee617dac19"><div class="ttname"><a href="classb2_chain_shape.html#a2ca535a3b3d1e54f5572a3ee617dac19">b2ChainShape::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> b2ChainShape.cpp:148</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_chain_shape_html_a371b90f907f3b22e26db4d5d24560496"><div class="ttname"><a href="classb2_chain_shape.html#a371b90f907f3b22e26db4d5d24560496">b2ChainShape::GetChildCount</a></div><div class="ttdeci">int32 GetChildCount() const</div><div class="ttdef"><b>Definition:</b> b2ChainShape.cpp:103</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="classb2_chain_shape_html_ab2ad711781e6ac81179074e90e0e058b"><div class="ttname"><a href="classb2_chain_shape.html#ab2ad711781e6ac81179074e90e0e058b">b2ChainShape::m_count</a></div><div class="ttdeci">int32 m_count</div><div class="ttdoc">The vertex count. </div><div class="ttdef"><b>Definition:</b> b2ChainShape.h:89</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_chain_shape_html_a15c7c2821a52266ef57621ac7d34a95f"><div class="ttname"><a href="classb2_chain_shape.html#a15c7c2821a52266ef57621ac7d34a95f">b2ChainShape::SetNextVertex</a></div><div class="ttdeci">void SetNextVertex(const b2Vec2 &nextVertex)</div><div class="ttdef"><b>Definition:</b> b2ChainShape.cpp:85</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_edge_shape_html"><div class="ttname"><a href="classb2_edge_shape.html">b2EdgeShape</a></div><div class="ttdef"><b>Definition:</b> b2EdgeShape.h:27</div></div>
<div class="ttc" id="classb2_chain_shape_html_a612caee9cc6a62dec501a6b6059c13a8"><div class="ttname"><a href="classb2_chain_shape.html#a612caee9cc6a62dec501a6b6059c13a8">b2ChainShape::ComputeAABB</a></div><div class="ttdeci">void ComputeAABB(b2AABB *aabb, const b2Transform &transform, int32 childIndex) const</div><div class="ttdef"><b>Definition:</b> b2ChainShape.cpp:168</div></div>
<div class="ttc" id="classb2_chain_shape_html_a2d2d59b49c2611ad65ed68b0943d642d"><div class="ttname"><a href="classb2_chain_shape.html#a2d2d59b49c2611ad65ed68b0943d642d">b2ChainShape::TestPoint</a></div><div class="ttdeci">bool TestPoint(const b2Transform &transform, const b2Vec2 &p) const</div><div class="ttdef"><b>Definition:</b> b2ChainShape.cpp:141</div></div>
<div class="ttc" id="classb2_chain_shape_html_ac257742a52cac391e25962a4c703fb06"><div class="ttname"><a href="classb2_chain_shape.html#ac257742a52cac391e25962a4c703fb06">b2ChainShape::CreateLoop</a></div><div class="ttdeci">void CreateLoop(const b2Vec2 *vertices, int32 count)</div><div class="ttdef"><b>Definition:</b> b2ChainShape.cpp:36</div></div>
<div class="ttc" id="classb2_chain_shape_html_a8c032394f5a85e7fc425a437e7689a18"><div class="ttname"><a href="classb2_chain_shape.html#a8c032394f5a85e7fc425a437e7689a18">b2ChainShape::~b2ChainShape</a></div><div class="ttdeci">~b2ChainShape()</div><div class="ttdoc">The destructor frees the vertices using b2Free. </div><div class="ttdef"><b>Definition:</b> b2ChainShape.cpp:24</div></div>
<div class="ttc" id="classb2_chain_shape_html_a481116a6886fb3880b13e55c966579da"><div class="ttname"><a href="classb2_chain_shape.html#a481116a6886fb3880b13e55c966579da">b2ChainShape::m_vertices</a></div><div class="ttdeci">b2Vec2 * m_vertices</div><div class="ttdoc">The vertices. Owned by this class. </div><div class="ttdef"><b>Definition:</b> b2ChainShape.h:86</div></div>
<div class="ttc" id="classb2_chain_shape_html_abfe7f836d3c32dc06b920df61a74f412"><div class="ttname"><a href="classb2_chain_shape.html#abfe7f836d3c32dc06b920df61a74f412">b2ChainShape::GetChildEdge</a></div><div class="ttdeci">void GetChildEdge(b2EdgeShape *edge, int32 index) const</div><div class="ttdoc">Get a child edge. </div><div class="ttdef"><b>Definition:</b> b2ChainShape.cpp:109</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_chain_shape_html_aeb2ddbe0c52a98885e91b7c8f597315b"><div class="ttname"><a href="classb2_chain_shape.html#aeb2ddbe0c52a98885e91b7c8f597315b">b2ChainShape::SetPrevVertex</a></div><div class="ttdeci">void SetPrevVertex(const b2Vec2 &prevVertex)</div><div class="ttdef"><b>Definition:</b> b2ChainShape.cpp:79</div></div>
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