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<a href="#pub-static-methods">Static Public Member Functions</a> &#124;
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<a href="#pub-static-attribs">Static Public Attributes</a> &#124;
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<div class="title">ON_MeshFaceSide Class Reference</div> </div>
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<p><code>#include &lt;<a class="el" href="opennurbs__mesh_8h_source.html">opennurbs_mesh.h</a>&gt;</code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-methods"></a>
Static Public Member Functions</h2></td></tr>
<tr class="memitem:a299a6da7abf65f5e6a3246ac51f4b0ef"><td class="memItemLeft" align="right" valign="top">static int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_o_n___mesh_face_side.html#a299a6da7abf65f5e6a3246ac51f4b0ef">CompareFaceIndex</a> (const <a class="el" href="class_o_n___mesh_face_side.html">ON_MeshFaceSide</a> *a, const <a class="el" href="class_o_n___mesh_face_side.html">ON_MeshFaceSide</a> *b)</td></tr>
<tr class="separator:a299a6da7abf65f5e6a3246ac51f4b0ef"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aa7a3b9af1312f72867ed12be1c523a00"><td class="memItemLeft" align="right" valign="top">static int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_o_n___mesh_face_side.html#aa7a3b9af1312f72867ed12be1c523a00">CompareVertexIndex</a> (const <a class="el" href="class_o_n___mesh_face_side.html">ON_MeshFaceSide</a> *a, const <a class="el" href="class_o_n___mesh_face_side.html">ON_MeshFaceSide</a> *b)</td></tr>
<tr class="separator:aa7a3b9af1312f72867ed12be1c523a00"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aacfd9b95626add5ecb6f3a684bfe29a5"><td class="memItemLeft" align="right" valign="top">static unsigned int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_o_n___mesh_face_side.html#aacfd9b95626add5ecb6f3a684bfe29a5">GetFaceSideList</a> (size_t mesh_vertex_count, const class <a class="el" href="class_o_n___mesh_face_list.html">ON_MeshFaceList</a> &amp;mesh_face_list, const unsigned int *fi_list, size_t fi_list_count, const unsigned int *vertex_id_map, <a class="el" href="class_o_n___mesh_face_side.html">ON_MeshFaceSide</a> *&amp;face_side_list)</td></tr>
<tr class="separator:aacfd9b95626add5ecb6f3a684bfe29a5"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a45b745d235b6b71457567241a3ca0d9f"><td class="memItemLeft" align="right" valign="top">static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_o_n___mesh_face_side.html#a45b745d235b6b71457567241a3ca0d9f">SortByFaceIndex</a> (<a class="el" href="class_o_n___mesh_face_side.html">ON_MeshFaceSide</a> *face_sides, size_t face_sides_count)</td></tr>
<tr class="separator:a45b745d235b6b71457567241a3ca0d9f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a060871330763e49abde8add1f70daf97"><td class="memItemLeft" align="right" valign="top">static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_o_n___mesh_face_side.html#a060871330763e49abde8add1f70daf97">SortByVertexIndex</a> (<a class="el" href="class_o_n___mesh_face_side.html">ON_MeshFaceSide</a> *face_sides, size_t face_sides_count)</td></tr>
<tr class="separator:a060871330763e49abde8add1f70daf97"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-attribs"></a>
Public Attributes</h2></td></tr>
<tr class="memitem:a7ec526ef41564986c97960c4361dc685"><td class="memItemLeft" align="right" valign="top">unsigned char&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_o_n___mesh_face_side.html#a7ec526ef41564986c97960c4361dc685">m_dir</a></td></tr>
<tr class="memdesc:a7ec526ef41564986c97960c4361dc685"><td class="mdescLeft">&#160;</td><td class="mdescRight">0 = counterclockwise, 1 = clockwise (reversed) <a href="#a7ec526ef41564986c97960c4361dc685">More...</a><br /></td></tr>
<tr class="separator:a7ec526ef41564986c97960c4361dc685"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aad6639c8fe295795da1551573c36e354"><td class="memItemLeft" align="right" valign="top">unsigned int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_o_n___mesh_face_side.html#aad6639c8fe295795da1551573c36e354">m_fi</a></td></tr>
<tr class="memdesc:aad6639c8fe295795da1551573c36e354"><td class="mdescLeft">&#160;</td><td class="mdescRight">face index or id <a href="#aad6639c8fe295795da1551573c36e354">More...</a><br /></td></tr>
<tr class="separator:aad6639c8fe295795da1551573c36e354"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a503770eb45fea99526764bcc49087d10"><td class="memItemLeft" align="right" valign="top">unsigned int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_o_n___mesh_face_side.html#a503770eb45fea99526764bcc49087d10">m_id</a></td></tr>
<tr class="memdesc:a503770eb45fea99526764bcc49087d10"><td class="mdescLeft">&#160;</td><td class="mdescRight">Use depends on context - typically identifies and edge or ngon. <a href="#a503770eb45fea99526764bcc49087d10">More...</a><br /></td></tr>
<tr class="separator:a503770eb45fea99526764bcc49087d10"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a5a3c4d83c0270e1bf94e47f4ba7ebf77"><td class="memItemLeft" align="right" valign="top">unsigned char&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_o_n___mesh_face_side.html#a5a3c4d83c0270e1bf94e47f4ba7ebf77">m_side</a></td></tr>
<tr class="separator:a5a3c4d83c0270e1bf94e47f4ba7ebf77"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a11f8072b720f660806e5f5f3eaed8bf7"><td class="memItemLeft" align="right" valign="top">unsigned short&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_o_n___mesh_face_side.html#a11f8072b720f660806e5f5f3eaed8bf7">m_value</a></td></tr>
<tr class="memdesc:a11f8072b720f660806e5f5f3eaed8bf7"><td class="mdescLeft">&#160;</td><td class="mdescRight">Use depends on context. <a href="#a11f8072b720f660806e5f5f3eaed8bf7">More...</a><br /></td></tr>
<tr class="separator:a11f8072b720f660806e5f5f3eaed8bf7"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ae203d60dad287a2f654fd1ef55ef304e"><td class="memItemLeft" align="right" valign="top">unsigned int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_o_n___mesh_face_side.html#ae203d60dad287a2f654fd1ef55ef304e">m_vi</a> [2]</td></tr>
<tr class="memdesc:ae203d60dad287a2f654fd1ef55ef304e"><td class="mdescLeft">&#160;</td><td class="mdescRight">vertex indices or ids (equal values indicate unset) <a href="#ae203d60dad287a2f654fd1ef55ef304e">More...</a><br /></td></tr>
<tr class="separator:ae203d60dad287a2f654fd1ef55ef304e"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-attribs"></a>
Static Public Attributes</h2></td></tr>
<tr class="memitem:a680b3a0be1bf6d54ba66e5afc985f143"><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="class_o_n___mesh_face_side.html">ON_MeshFaceSide</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_o_n___mesh_face_side.html#a680b3a0be1bf6d54ba66e5afc985f143">Unset</a></td></tr>
<tr class="memdesc:a680b3a0be1bf6d54ba66e5afc985f143"><td class="mdescLeft">&#160;</td><td class="mdescRight">all values are zero <a href="#a680b3a0be1bf6d54ba66e5afc985f143">More...</a><br /></td></tr>
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<h2 class="groupheader">Member Function Documentation</h2>
<a id="a299a6da7abf65f5e6a3246ac51f4b0ef"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a299a6da7abf65f5e6a3246ac51f4b0ef">&#9670;&nbsp;</a></span>CompareFaceIndex()</h2>
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<td class="memname">static int ON_MeshFaceSide::CompareFaceIndex </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="class_o_n___mesh_face_side.html">ON_MeshFaceSide</a> *&#160;</td>
<td class="paramname"><em>a</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="class_o_n___mesh_face_side.html">ON_MeshFaceSide</a> *&#160;</td>
<td class="paramname"><em>b</em>&#160;</td>
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<td>)</td>
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<p>Description: Compare a and b in dictionary order comparing the field values in the order m_fi m_vi[0] m_vi[1] m_side m_dir Parameters: a - [in] b - [in] Returns: -1: *a &lt; *b 0: *a &lt; *b 1: *a &gt; *b Remarks: The function is thread safe. </p>
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<a id="aa7a3b9af1312f72867ed12be1c523a00"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aa7a3b9af1312f72867ed12be1c523a00">&#9670;&nbsp;</a></span>CompareVertexIndex()</h2>
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<td class="memname">static int ON_MeshFaceSide::CompareVertexIndex </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="class_o_n___mesh_face_side.html">ON_MeshFaceSide</a> *&#160;</td>
<td class="paramname"><em>a</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="class_o_n___mesh_face_side.html">ON_MeshFaceSide</a> *&#160;</td>
<td class="paramname"><em>b</em>&#160;</td>
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<p>Description: Compare a and b in dictionary order comparing the field values in the order m_vi[0] m_vi[1] m_fi m_side m_dir Parameters: a - [in] b - [in] Returns: -1: *a &lt; *b 0: *a &lt; *b 1: *a &gt; *b Remarks: The function is thread safe. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#aacfd9b95626add5ecb6f3a684bfe29a5">&#9670;&nbsp;</a></span>GetFaceSideList()</h2>
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<td class="memname">static unsigned int ON_MeshFaceSide::GetFaceSideList </td>
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<td class="paramtype">size_t&#160;</td>
<td class="paramname"><em>mesh_vertex_count</em>, </td>
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<td class="paramtype">const class <a class="el" href="class_o_n___mesh_face_list.html">ON_MeshFaceList</a> &amp;&#160;</td>
<td class="paramname"><em>mesh_face_list</em>, </td>
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<td class="paramtype">const unsigned int *&#160;</td>
<td class="paramname"><em>fi_list</em>, </td>
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<td class="paramtype">size_t&#160;</td>
<td class="paramname"><em>fi_list_count</em>, </td>
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<td class="paramtype">const unsigned int *&#160;</td>
<td class="paramname"><em>vertex_id_map</em>, </td>
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<td class="paramtype"><a class="el" href="class_o_n___mesh_face_side.html">ON_MeshFaceSide</a> *&amp;&#160;</td>
<td class="paramname"><em>face_side_list</em>&#160;</td>
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<p>Description: Get a list of mesh face sides. Parameters: mesh_vertex_count - [in] Number of vertices in the mesh. This value is used to validate vertex index values in mesh_face_list. mesh_face_list - [in] Mesh faces fi_list - [in]</p><ul>
<li>If fi_list null, then sides for every face in mesh_face_list will be added and the <a class="el" href="class_o_n___mesh_face_side.html#aad6639c8fe295795da1551573c36e354" title="face index or id ">ON_MeshFaceSide.m_fi</a> values will be the mesh_face_list[] index.</li>
<li>If fi_list is not null, then fi_list[] is an array of mesh_face_list[] indices and the <a class="el" href="class_o_n___mesh_face_side.html#aad6639c8fe295795da1551573c36e354" title="face index or id ">ON_MeshFaceSide.m_fi</a> values will be fi_list[] array indices. For example, you may pass ON_MeshNon.m_fi as this parameter when you want a list of sides of faces in an ngon. fi_list_count - [in]</li>
<li>If fi_list is not null, then fi_list_count is the number of elements in the fi_list[] array.</li>
<li>If fi_list is null, then fi_list_count is ignored. vertex_id_map - [in] (can be null)</li>
<li>If vertex_id_map is null, then the <a class="el" href="class_o_n___mesh_face_side.html#ae203d60dad287a2f654fd1ef55ef304e" title="vertex indices or ids (equal values indicate unset) ">ON_MeshFaceSide::m_vi</a>[] values are the vertex index values from mesh_face_list[].</li>
<li>If vertex_id_map is not null, then vertex_id_map[] is an array with the mesh_vertex_count elements and <a class="el" href="class_o_n___mesh_face_side.html#ae203d60dad287a2f654fd1ef55ef304e" title="vertex indices or ids (equal values indicate unset) ">ON_MeshFaceSide::m_vi</a>[] values are vertex_id_map[mesh_face_list[] vertex indices]. A vertex_id_map[] is commonly used when coincident vertices need to be treated as a single topological entity. face_side_list - [out]</li>
<li>If the input value of face_side_list is not null, then face_side_list[] must be long enough to hold the returned face_side_list list. <br />
The maximum posssible length is 4*mesh_face_list.FaceCount().</li>
<li>If the input falue of face_side_list is null, memory will be allocated using onmalloc() and the caller is responsible for calling onfree() at an appropriate time. The returned is face_side_list[] is dictionary sorted by <a class="el" href="class_o_n___mesh_face_side.html#aad6639c8fe295795da1551573c36e354" title="face index or id ">ON_MeshFaceSide.m_fi</a> and then ON_MeshFaceSide.m_si. The vertex ids satisfy <a class="el" href="class_o_n___mesh_face_side.html#ae203d60dad287a2f654fd1ef55ef304e" title="vertex indices or ids (equal values indicate unset) ">ON_MeshFaceSide.m_vi</a>[0] &lt; <a class="el" href="class_o_n___mesh_face_side.html#ae203d60dad287a2f654fd1ef55ef304e" title="vertex indices or ids (equal values indicate unset) ">ON_MeshFaceSide.m_vi</a>[1]. <a class="el" href="class_o_n___mesh_face_side.html#a7ec526ef41564986c97960c4361dc685" title="0 = counterclockwise, 1 = clockwise (reversed) ">ON_MeshFaceSide.m_dir</a> is 0 if the face vertex order is the same and 1 if the face vertex order is opposite. The static sorting functions on <a class="el" href="class_o_n___mesh_face_side.html">ON_MeshFaceSide</a> can be used to change this ordering. Returns: Number of elements set in face_side_list[]. Remarks: Faces in mesh_face_list with vertex indices that are &gt;= mesh_vertex_count are ignored. Degenerate faces are processed, but degenerate sides (equal vertex ids) are not added to face_side_list[]. </li>
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<h2 class="memtitle"><span class="permalink"><a href="#a45b745d235b6b71457567241a3ca0d9f">&#9670;&nbsp;</a></span>SortByFaceIndex()</h2>
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<td class="memname">static void ON_MeshFaceSide::SortByFaceIndex </td>
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<td class="paramtype"><a class="el" href="class_o_n___mesh_face_side.html">ON_MeshFaceSide</a> *&#160;</td>
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<td class="paramtype">size_t&#160;</td>
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<p>Description: Sort the face_sides[] using the compare function <a class="el" href="class_o_n___mesh_face_side.html#a299a6da7abf65f5e6a3246ac51f4b0ef">ON_MeshFaceSide::CompareFaceIndex()</a>. Paramters: face_sides - [in/out] array to sort face_sides_count - [in] number of elements in the face_sides[] array. Remarks: The function is thread safe. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a060871330763e49abde8add1f70daf97">&#9670;&nbsp;</a></span>SortByVertexIndex()</h2>
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<td class="memname">static void ON_MeshFaceSide::SortByVertexIndex </td>
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<td class="paramtype"><a class="el" href="class_o_n___mesh_face_side.html">ON_MeshFaceSide</a> *&#160;</td>
<td class="paramname"><em>face_sides</em>, </td>
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<td class="paramtype">size_t&#160;</td>
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<td>)</td>
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<p>Description: Sort the face_sides[] using the compare function <a class="el" href="class_o_n___mesh_face_side.html#aa7a3b9af1312f72867ed12be1c523a00">ON_MeshFaceSide::CompareVertexIndex()</a>. Paramters: face_sides - [in/out] array to sort face_sides_count - [in] number of elements in the face_sides[] array. Remarks: The function is thread safe. </p>
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<h2 class="groupheader">Member Data Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a7ec526ef41564986c97960c4361dc685">&#9670;&nbsp;</a></span>m_dir</h2>
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<td class="memname">unsigned char ON_MeshFaceSide::m_dir</td>
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<p>0 = counterclockwise, 1 = clockwise (reversed) </p>
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<h2 class="memtitle"><span class="permalink"><a href="#aad6639c8fe295795da1551573c36e354">&#9670;&nbsp;</a></span>m_fi</h2>
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<td class="memname">unsigned int ON_MeshFaceSide::m_fi</td>
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<p>face index or id </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a503770eb45fea99526764bcc49087d10">&#9670;&nbsp;</a></span>m_id</h2>
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<td class="memname">unsigned int ON_MeshFaceSide::m_id</td>
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<p>Use depends on context - typically identifies and edge or ngon. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a5a3c4d83c0270e1bf94e47f4ba7ebf77">&#9670;&nbsp;</a></span>m_side</h2>
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<td class="memname">unsigned char ON_MeshFaceSide::m_side</td>
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<p>triangles use 0,1,3, quads use 0,1,2,3 m_side 0 connect face vertex 0 to face vertex 1. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a11f8072b720f660806e5f5f3eaed8bf7">&#9670;&nbsp;</a></span>m_value</h2>
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<td class="memname">unsigned short ON_MeshFaceSide::m_value</td>
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<p>Use depends on context. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ae203d60dad287a2f654fd1ef55ef304e">&#9670;&nbsp;</a></span>m_vi</h2>
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<td class="memname">unsigned int ON_MeshFaceSide::m_vi[2]</td>
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<p>vertex indices or ids (equal values indicate unset) </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a680b3a0be1bf6d54ba66e5afc985f143">&#9670;&nbsp;</a></span>Unset</h2>
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<td class="memname">const <a class="el" href="class_o_n___mesh_face_side.html">ON_MeshFaceSide</a> ON_MeshFaceSide::Unset</td>
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<p>all values are zero </p>
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