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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<title>AngelCAD: polygon Class Reference</title>
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<div id="projectname">AngelCAD
 <span id="projectnumber">1.5-00</span>
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<a href="#pub-methods">Public Member Functions</a> |
<a href="classpolygon-members.html">List of all members</a> </div>
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<div class="title">polygon Class Reference</div> </div>
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<p>polygon, vertices in CCW order
<a href="classpolygon.html#details">More...</a></p>
<p><code>#include <<a class="el" href="angelcad_8h_source.html">angelcad.h</a>></code></p>
<div class="dynheader">
Inheritance diagram for polygon:</div>
<div class="dyncontent">
<div class="center">
<img src="classpolygon.png" usemap="#polygon_map" alt=""/>
<map id="polygon_map" name="polygon_map">
<area href="classshape2d.html" title="Abstract base for 2d primitives and booleans. " alt="shape2d" shape="rect" coords="0,56,60,80"/>
<area href="classshape.html" title="Abstract base for all primitives and booleans. " alt="shape" shape="rect" coords="0,0,60,24"/>
</map>
</div></div>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:ae255d4ffdf2790618a40e98e98a113f6"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classpolygon.html#ae255d4ffdf2790618a40e98e98a113f6">polygon</a> (const <a class="el" href="classpos2d.html">pos2d</a>@ p1, const <a class="el" href="classpos2d.html">pos2d</a>@ p2, const <a class="el" href="classpos2d.html">pos2d</a>@ p3)</td></tr>
<tr class="memdesc:ae255d4ffdf2790618a40e98e98a113f6"><td class="mdescLeft"> </td><td class="mdescRight">Create triangular polygon, points must be given in CCW order. <a href="#ae255d4ffdf2790618a40e98e98a113f6">More...</a><br /></td></tr>
<tr class="separator:ae255d4ffdf2790618a40e98e98a113f6"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:adafd53241e024cd047a21bf279a41edd"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classpolygon.html#adafd53241e024cd047a21bf279a41edd">polygon</a> (const <a class="el" href="classpos2d.html">pos2d</a>@ p1, const <a class="el" href="classpos2d.html">pos2d</a>@ p2, const <a class="el" href="classpos2d.html">pos2d</a>@ p3, const <a class="el" href="classpos2d.html">pos2d</a>@ p4)</td></tr>
<tr class="memdesc:adafd53241e024cd047a21bf279a41edd"><td class="mdescLeft"> </td><td class="mdescRight">Create quadrilateral polygon, points must be given in CCW order. <a href="#adafd53241e024cd047a21bf279a41edd">More...</a><br /></td></tr>
<tr class="separator:adafd53241e024cd047a21bf279a41edd"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ac2549e0adccd5e1d23bd5f8c9901a609"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classpolygon.html#ac2549e0adccd5e1d23bd5f8c9901a609">polygon</a> (const <a class="el" href="classpos2d.html">pos2d</a>@ p1, const <a class="el" href="classpos2d.html">pos2d</a>@ p2, const <a class="el" href="classpos2d.html">pos2d</a>@ p3, const <a class="el" href="classpos2d.html">pos2d</a>@ p4, const <a class="el" href="classpos2d.html">pos2d</a>@ p5)</td></tr>
<tr class="memdesc:ac2549e0adccd5e1d23bd5f8c9901a609"><td class="mdescLeft"> </td><td class="mdescRight">Create 5-sided polygon, points must be given in CCW order. <a href="#ac2549e0adccd5e1d23bd5f8c9901a609">More...</a><br /></td></tr>
<tr class="separator:ac2549e0adccd5e1d23bd5f8c9901a609"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a41eae1b5731114b788e5aff3da030f99"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classpolygon.html#a41eae1b5731114b788e5aff3da030f99">polygon</a> (const <a class="el" href="classspline2d.html">spline2d</a>@ spline, uint nseg=30)</td></tr>
<tr class="memdesc:a41eae1b5731114b788e5aff3da030f99"><td class="mdescLeft"> </td><td class="mdescRight">Create polygon from spline curve and number of straight segments, points must be given in CCW order. <a href="#a41eae1b5731114b788e5aff3da030f99">More...</a><br /></td></tr>
<tr class="separator:a41eae1b5731114b788e5aff3da030f99"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:abe5cb7e2bebe5b8ddcc4b9ac3c10cd25"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classpolygon.html#abe5cb7e2bebe5b8ddcc4b9ac3c10cd25">polygon</a> (double r, uint np)</td></tr>
<tr class="memdesc:abe5cb7e2bebe5b8ddcc4b9ac3c10cd25"><td class="mdescLeft"> </td><td class="mdescRight">Create a circular polygon from a radius and np points. <a href="#abe5cb7e2bebe5b8ddcc4b9ac3c10cd25">More...</a><br /></td></tr>
<tr class="separator:abe5cb7e2bebe5b8ddcc4b9ac3c10cd25"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a76801581a9e9430a55de55d3a0309522"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classpolygon.html#a76801581a9e9430a55de55d3a0309522">polygon</a> (<a class="el" href="classarray.html">array</a>< <a class="el" href="classpos2d.html">pos2d</a>@>@ points, bool check=true)</td></tr>
<tr class="memdesc:a76801581a9e9430a55de55d3a0309522"><td class="mdescLeft"> </td><td class="mdescRight">Create a polygon from an array of points. <a href="#a76801581a9e9430a55de55d3a0309522">More...</a><br /></td></tr>
<tr class="separator:a76801581a9e9430a55de55d3a0309522"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:acd412984bfb1840936c78bfd13af03be"><td class="memItemLeft" align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="classpolygon.html#acd412984bfb1840936c78bfd13af03be">area</a> () const</td></tr>
<tr class="memdesc:acd412984bfb1840936c78bfd13af03be"><td class="mdescLeft"> </td><td class="mdescRight">Polygon area. <a href="#acd412984bfb1840936c78bfd13af03be">More...</a><br /></td></tr>
<tr class="separator:acd412984bfb1840936c78bfd13af03be"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ae345637e4caadcaafe11f0f82c64333b"><td class="memItemLeft" align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="classpolygon.html#ae345637e4caadcaafe11f0f82c64333b">signed_area</a> () const</td></tr>
<tr class="memdesc:ae345637e4caadcaafe11f0f82c64333b"><td class="mdescLeft"> </td><td class="mdescRight">Signed polygon area, return negative area for polygons oriented CW. <a href="#ae345637e4caadcaafe11f0f82c64333b">More...</a><br /></td></tr>
<tr class="separator:ae345637e4caadcaafe11f0f82c64333b"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a9608336e0138718b4aa5d9980027b217"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classpos2d.html">pos2d</a>@ </td><td class="memItemRight" valign="bottom"><a class="el" href="classpolygon.html#a9608336e0138718b4aa5d9980027b217">vertex</a> (uint iv) const</td></tr>
<tr class="memdesc:a9608336e0138718b4aa5d9980027b217"><td class="mdescLeft"> </td><td class="mdescRight">Return polygon vertex from zero based vertex index iv. <a href="#a9608336e0138718b4aa5d9980027b217">More...</a><br /></td></tr>
<tr class="separator:a9608336e0138718b4aa5d9980027b217"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a511848d9532b5fd440b2b907747603b3"><td class="memItemLeft" align="right" valign="top">uint </td><td class="memItemRight" valign="bottom"><a class="el" href="classpolygon.html#a511848d9532b5fd440b2b907747603b3">size</a> () const</td></tr>
<tr class="memdesc:a511848d9532b5fd440b2b907747603b3"><td class="mdescLeft"> </td><td class="mdescRight">number of polygon points <a href="#a511848d9532b5fd440b2b907747603b3">More...</a><br /></td></tr>
<tr class="separator:a511848d9532b5fd440b2b907747603b3"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="inherit_header pub_methods_classshape2d"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_classshape2d')"><img src="closed.png" alt="-"/> Public Member Functions inherited from <a class="el" href="classshape2d.html">shape2d</a></td></tr>
<tr class="memitem:a73361e276de7516b4fae68b5cb491e48 inherit pub_methods_classshape2d"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classshape2d.html">shape2d</a>@ </td><td class="memItemRight" valign="bottom"><a class="el" href="classshape2d.html#a73361e276de7516b4fae68b5cb491e48">opAdd</a> (<a class="el" href="classshape2d.html">shape2d</a>@ b)</td></tr>
<tr class="memdesc:a73361e276de7516b4fae68b5cb491e48 inherit pub_methods_classshape2d"><td class="mdescLeft"> </td><td class="mdescRight">Boolean union operator+ overload. <a href="classshape2d.html#a73361e276de7516b4fae68b5cb491e48">More...</a><br /></td></tr>
<tr class="separator:a73361e276de7516b4fae68b5cb491e48 inherit pub_methods_classshape2d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a1be2acebbc83abc9aa4af0d2c1296179 inherit pub_methods_classshape2d"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classshape2d.html">shape2d</a>@ </td><td class="memItemRight" valign="bottom"><a class="el" href="classshape2d.html#a1be2acebbc83abc9aa4af0d2c1296179">opAnd</a> (<a class="el" href="classshape2d.html">shape2d</a>@ b)</td></tr>
<tr class="memdesc:a1be2acebbc83abc9aa4af0d2c1296179 inherit pub_methods_classshape2d"><td class="mdescLeft"> </td><td class="mdescRight">Boolean intersection operator& overload. <a href="classshape2d.html#a1be2acebbc83abc9aa4af0d2c1296179">More...</a><br /></td></tr>
<tr class="separator:a1be2acebbc83abc9aa4af0d2c1296179 inherit pub_methods_classshape2d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:adf273d8fdee196b2871b21687a01e678 inherit pub_methods_classshape2d"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classshape2d.html">shape2d</a>@ </td><td class="memItemRight" valign="bottom"><a class="el" href="classshape2d.html#adf273d8fdee196b2871b21687a01e678">opMul</a> (<a class="el" href="classtmatrix.html">tmatrix</a>@ matrix)</td></tr>
<tr class="memdesc:adf273d8fdee196b2871b21687a01e678 inherit pub_methods_classshape2d"><td class="mdescLeft"> </td><td class="mdescRight">Transform object by matrix multiplication: <a class="el" href="classshape2d.html" title="Abstract base for 2d primitives and booleans. ">shape2d</a>@ o2 = T * o1. <a href="classshape2d.html#adf273d8fdee196b2871b21687a01e678">More...</a><br /></td></tr>
<tr class="separator:adf273d8fdee196b2871b21687a01e678 inherit pub_methods_classshape2d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a3d5d2f8e179bda1bd04440cde53a5bfe inherit pub_methods_classshape2d"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classshape2d.html">shape2d</a>@ </td><td class="memItemRight" valign="bottom"><a class="el" href="classshape2d.html#a3d5d2f8e179bda1bd04440cde53a5bfe">opSub</a> (<a class="el" href="classshape2d.html">shape2d</a>@ b)</td></tr>
<tr class="memdesc:a3d5d2f8e179bda1bd04440cde53a5bfe inherit pub_methods_classshape2d"><td class="mdescLeft"> </td><td class="mdescRight">Boolean difference operator- overload. <a href="classshape2d.html#a3d5d2f8e179bda1bd04440cde53a5bfe">More...</a><br /></td></tr>
<tr class="separator:a3d5d2f8e179bda1bd04440cde53a5bfe inherit pub_methods_classshape2d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="inherit_header pub_methods_classshape"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_classshape')"><img src="closed.png" alt="-"/> Public Member Functions inherited from <a class="el" href="classshape.html">shape</a></td></tr>
<tr class="memitem:a9511e310496d8d70c26cf0c4b59b0200 inherit pub_methods_classshape"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classboundingbox.html">boundingbox</a>@ </td><td class="memItemRight" valign="bottom"><a class="el" href="classshape.html#a9511e310496d8d70c26cf0c4b59b0200">box</a> () const</td></tr>
<tr class="memdesc:a9511e310496d8d70c26cf0c4b59b0200 inherit pub_methods_classshape"><td class="mdescLeft"> </td><td class="mdescRight">Return bounding box of object. <a href="classshape.html#a9511e310496d8d70c26cf0c4b59b0200">More...</a><br /></td></tr>
<tr class="separator:a9511e310496d8d70c26cf0c4b59b0200 inherit pub_methods_classshape"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ac03192d7f3b961b3ae84cb5821daf508 inherit pub_methods_classshape"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classtmatrix.html">tmatrix</a>@ </td><td class="memItemRight" valign="bottom"><a class="el" href="classshape.html#ac03192d7f3b961b3ae84cb5821daf508">transform</a> () const</td></tr>
<tr class="memdesc:ac03192d7f3b961b3ae84cb5821daf508 inherit pub_methods_classshape"><td class="mdescLeft"> </td><td class="mdescRight">Return transformation matrix of object. <a href="classshape.html#ac03192d7f3b961b3ae84cb5821daf508">More...</a><br /></td></tr>
<tr class="separator:ac03192d7f3b961b3ae84cb5821daf508 inherit pub_methods_classshape"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a68ad904d40735fce93feda3786512be6 inherit pub_methods_classshape"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classshape.html#a68ad904d40735fce93feda3786512be6">write_csg</a> (<a class="el" href="classstring.html">string</a> path)</td></tr>
<tr class="memdesc:a68ad904d40735fce93feda3786512be6 inherit pub_methods_classshape"><td class="mdescLeft"> </td><td class="mdescRight">Write object to OpenSCAD .csg file. <a href="classshape.html#a68ad904d40735fce93feda3786512be6">More...</a><br /></td></tr>
<tr class="separator:a68ad904d40735fce93feda3786512be6 inherit pub_methods_classshape"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a360c3c312d757f8385fc36cb7ec940e0 inherit pub_methods_classshape"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classshape.html#a360c3c312d757f8385fc36cb7ec940e0">write_xcsg</a> (<a class="el" href="classstring.html">string</a> path, double secant_tolerance=- 1.0)</td></tr>
<tr class="memdesc:a360c3c312d757f8385fc36cb7ec940e0 inherit pub_methods_classshape"><td class="mdescLeft"> </td><td class="mdescRight">Write object to .xcsg file for processing by xcsg program. <a href="classshape.html#a360c3c312d757f8385fc36cb7ec940e0">More...</a><br /></td></tr>
<tr class="separator:a360c3c312d757f8385fc36cb7ec940e0 inherit pub_methods_classshape"><td class="memSeparator" colspan="2"> </td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>polygon, vertices in CCW order </p>
<p>a polygon is a 2d object. It is defined by vertex positions listed in CCW sequence. </p>
</div><h2 class="groupheader">Constructor & Destructor Documentation</h2>
<a id="ae255d4ffdf2790618a40e98e98a113f6"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ae255d4ffdf2790618a40e98e98a113f6">◆ </a></span>polygon() <span class="overload">[1/6]</span></h2>
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<td class="memname">polygon::polygon </td>
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<td class="paramtype">const <a class="el" href="classpos2d.html">pos2d</a>@ </td>
<td class="paramname"><em>p1</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="classpos2d.html">pos2d</a>@ </td>
<td class="paramname"><em>p2</em>, </td>
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<td class="paramtype">const <a class="el" href="classpos2d.html">pos2d</a>@ </td>
<td class="paramname"><em>p3</em> </td>
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<p>Create triangular polygon, points must be given in CCW order. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">p1</td><td><a class="el" href="classpos2d.html" title="2d position coordinates ">pos2d</a>@, position <br />
</td></tr>
<tr><td class="paramname">p2</td><td><a class="el" href="classpos2d.html" title="2d position coordinates ">pos2d</a>@, position <br />
</td></tr>
<tr><td class="paramname">p3</td><td><a class="el" href="classpos2d.html" title="2d position coordinates ">pos2d</a>@, position </td></tr>
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</dd>
</dl>
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<a id="adafd53241e024cd047a21bf279a41edd"></a>
<h2 class="memtitle"><span class="permalink"><a href="#adafd53241e024cd047a21bf279a41edd">◆ </a></span>polygon() <span class="overload">[2/6]</span></h2>
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<td class="memname">polygon::polygon </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classpos2d.html">pos2d</a>@ </td>
<td class="paramname"><em>p1</em>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="classpos2d.html">pos2d</a>@ </td>
<td class="paramname"><em>p2</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="classpos2d.html">pos2d</a>@ </td>
<td class="paramname"><em>p3</em>, </td>
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<td></td>
<td class="paramtype">const <a class="el" href="classpos2d.html">pos2d</a>@ </td>
<td class="paramname"><em>p4</em> </td>
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<td>)</td>
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<p>Create quadrilateral polygon, points must be given in CCW order. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">p1</td><td><a class="el" href="classpos2d.html" title="2d position coordinates ">pos2d</a>@, position <br />
</td></tr>
<tr><td class="paramname">p2</td><td><a class="el" href="classpos2d.html" title="2d position coordinates ">pos2d</a>@, position <br />
</td></tr>
<tr><td class="paramname">p3</td><td><a class="el" href="classpos2d.html" title="2d position coordinates ">pos2d</a>@, position <br />
</td></tr>
<tr><td class="paramname">p4</td><td><a class="el" href="classpos2d.html" title="2d position coordinates ">pos2d</a>@, position </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a id="ac2549e0adccd5e1d23bd5f8c9901a609"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ac2549e0adccd5e1d23bd5f8c9901a609">◆ </a></span>polygon() <span class="overload">[3/6]</span></h2>
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<td class="memname">polygon::polygon </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classpos2d.html">pos2d</a>@ </td>
<td class="paramname"><em>p1</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="classpos2d.html">pos2d</a>@ </td>
<td class="paramname"><em>p2</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="classpos2d.html">pos2d</a>@ </td>
<td class="paramname"><em>p3</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="classpos2d.html">pos2d</a>@ </td>
<td class="paramname"><em>p4</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="classpos2d.html">pos2d</a>@ </td>
<td class="paramname"><em>p5</em> </td>
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<td></td>
<td>)</td>
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<p>Create 5-sided polygon, points must be given in CCW order. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">p1</td><td><a class="el" href="classpos2d.html" title="2d position coordinates ">pos2d</a>@, position <br />
</td></tr>
<tr><td class="paramname">p2</td><td><a class="el" href="classpos2d.html" title="2d position coordinates ">pos2d</a>@, position <br />
</td></tr>
<tr><td class="paramname">p3</td><td><a class="el" href="classpos2d.html" title="2d position coordinates ">pos2d</a>@, position <br />
</td></tr>
<tr><td class="paramname">p4</td><td><a class="el" href="classpos2d.html" title="2d position coordinates ">pos2d</a>@, position <br />
</td></tr>
<tr><td class="paramname">p5</td><td><a class="el" href="classpos2d.html" title="2d position coordinates ">pos2d</a>@, position </td></tr>
</table>
</dd>
</dl>
</div>
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<a id="a41eae1b5731114b788e5aff3da030f99"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a41eae1b5731114b788e5aff3da030f99">◆ </a></span>polygon() <span class="overload">[4/6]</span></h2>
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<td class="memname">polygon::polygon </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classspline2d.html">spline2d</a>@ </td>
<td class="paramname"><em>spline</em>, </td>
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<td class="paramtype">uint </td>
<td class="paramname"><em>nseg</em> = <code>30</code> </td>
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<p>Create polygon from spline curve and number of straight segments, points must be given in CCW order. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">spline</td><td><a class="el" href="classspline2d.html" title="2d cubic spline curve ">spline2d</a>@, 2d spline curve defining polygon profile <br />
</td></tr>
<tr><td class="paramname">nseg</td><td>uint, number of straight segments for spline </td></tr>
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<a id="abe5cb7e2bebe5b8ddcc4b9ac3c10cd25"></a>
<h2 class="memtitle"><span class="permalink"><a href="#abe5cb7e2bebe5b8ddcc4b9ac3c10cd25">◆ </a></span>polygon() <span class="overload">[5/6]</span></h2>
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<td class="memname">polygon::polygon </td>
<td>(</td>
<td class="paramtype">double </td>
<td class="paramname"><em>r</em>, </td>
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<td class="paramtype">uint </td>
<td class="paramname"><em>np</em> </td>
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<td></td>
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<p>Create a circular polygon from a radius and np points. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">r</td><td>double <br />
</td></tr>
<tr><td class="paramname">np</td><td>uint </td></tr>
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</dd>
</dl>
</div>
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<a id="a76801581a9e9430a55de55d3a0309522"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a76801581a9e9430a55de55d3a0309522">◆ </a></span>polygon() <span class="overload">[6/6]</span></h2>
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<td class="memname">polygon::polygon </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classarray.html">array</a>< <a class="el" href="classpos2d.html">pos2d</a>@>@ </td>
<td class="paramname"><em>points</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">bool </td>
<td class="paramname"><em>check</em> = <code>true</code> </td>
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<p>Create a polygon from an array of points. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">points</td><td>array@ <br />
</td></tr>
<tr><td class="paramname">check</td><td>bool </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<h2 class="groupheader">Member Function Documentation</h2>
<a id="acd412984bfb1840936c78bfd13af03be"></a>
<h2 class="memtitle"><span class="permalink"><a href="#acd412984bfb1840936c78bfd13af03be">◆ </a></span>area()</h2>
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<td class="memname">double polygon::area </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
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<p>Polygon area. </p>
<p>return computed area of polygon</p>
<dl class="section return"><dt>Returns</dt><dd>double </dd></dl>
</div>
</div>
<a id="ae345637e4caadcaafe11f0f82c64333b"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ae345637e4caadcaafe11f0f82c64333b">◆ </a></span>signed_area()</h2>
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<td class="memname">double polygon::signed_area </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
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<p>Signed polygon area, return negative area for polygons oriented CW. </p>
<p>return signed computed area of polygon</p>
<dl class="section return"><dt>Returns</dt><dd>double </dd></dl>
</div>
</div>
<a id="a511848d9532b5fd440b2b907747603b3"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a511848d9532b5fd440b2b907747603b3">◆ </a></span>size()</h2>
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<td class="memname">uint polygon::size </td>
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<td class="paramname"></td><td>)</td>
<td> const</td>
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<p>number of polygon points </p>
<dl class="section return"><dt>Returns</dt><dd>uint, number of polygon points </dd></dl>
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<a id="a9608336e0138718b4aa5d9980027b217"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a9608336e0138718b4aa5d9980027b217">◆ </a></span>vertex()</h2>
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<td class="memname"><a class="el" href="classpos2d.html">pos2d</a>@ polygon::vertex </td>
<td>(</td>
<td class="paramtype">uint </td>
<td class="paramname"><em>iv</em></td><td>)</td>
<td> const</td>
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<p>Return polygon vertex from zero based vertex index iv. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">iv</td><td>uint <br />
</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd><a class="el" href="classpos2d.html" title="2d position coordinates ">pos2d</a>@ </dd></dl>
</div>
</div>
<hr/>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="angelcad_8h_source.html">angelcad.h</a></li>
</ul>
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