jsdk-offical

<!doctype html> <html class="default no-js"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>Line | JSDK 2.7.0 API</title> <meta name="description" content="Documentation for JSDK 2.7.0 API"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="../assets/css/main.css"> </head> <body> <header> <div class="tsd-page-toolbar"> <div class="container"> <div class="table-wrap"> <div class="table-cell" id="tsd-search" data-index="../assets/js/search.json" data-base=".."> <div class="field"> <label for="tsd-search-field" class="tsd-widget search no-caption">Search</label> <input id="tsd-search-field" type="text" /> </div> <ul class="results"> <li class="state loading">Preparing search index...</li> <li class="state failure">The search index is not available</li> </ul> <a href="../index.html" class="title">JSDK 2.7.0 API</a> </div> <div class="table-cell" id="tsd-widgets"> <div id="tsd-filter"> <a href="#" class="tsd-widget options no-caption" data-toggle="options">Options</a> <div class="tsd-filter-group"> <div class="tsd-select" id="tsd-filter-visibility"> <span class="tsd-select-label">All</span> <ul class="tsd-select-list"> <li data-value="public">Public</li> <li data-value="protected">Public/Protected</li> <li data-value="private" class="selected">All</li> </ul> </div> <input type="checkbox" id="tsd-filter-inherited" checked /> <label class="tsd-widget" for="tsd-filter-inherited">Inherited</label> <input type="checkbox" id="tsd-filter-externals" checked /> <label class="tsd-widget" for="tsd-filter-externals">Externals</label> <input type="checkbox" id="tsd-filter-only-exported" /> <label class="tsd-widget" for="tsd-filter-only-exported">Only exported</label> </div> </div> <a href="#" class="tsd-widget menu no-caption" data-toggle="menu">Menu</a> </div> </div> </div> </div> <div class="tsd-page-title"> <div class="container"> <ul class="tsd-breadcrumb"> <li> <a href="../globals.html">Globals</a> </li> <li> <a href="../modules/js.html">JS</a> </li> <li> <a href="../modules/js.math.html">math</a> </li> <li> <a href="../modules/js.math.geom.html">geom</a> </li> <li> <a href="js.math.geom.line.html">Line</a> </li> </ul> <h1>Class Line</h1> </div> </div> </header> <div class="container container-main"> <div class="row"> <div class="col-8 col-content"> <section class="tsd-panel tsd-hierarchy"> <h3>Hierarchy</h3> <ul class="tsd-hierarchy"> <li> <span class="target">Line</span> <ul class="tsd-hierarchy"> <li> <a href="js.math.geom.segment.html" class="tsd-signature-type">Segment</a> </li> </ul> </li> </ul> </section> <section class="tsd-panel"> <h3>Implements</h3> <ul class="tsd-hierarchy"> <li><a href="../interfaces/js.math.geom.shape.html" class="tsd-signature-type">Shape</a></li> </ul> </section> <section class="tsd-panel-group tsd-index-group"> <h2>Index</h2> <section class="tsd-panel tsd-index-panel"> <div class="tsd-index-content"> <section class="tsd-index-section "> <h3>Constructors</h3> <ul class="tsd-index-list"> <li class="tsd-kind-constructor tsd-parent-kind-class"><a href="js.math.geom.line.html#constructor" class="tsd-kind-icon">constructor</a></li> </ul> </section> <section class="tsd-index-section "> <h3>Properties</h3> <ul class="tsd-index-list"> <li class="tsd-kind-property tsd-parent-kind-class"><a href="js.math.geom.line.html#x1" class="tsd-kind-icon">x1</a></li> <li class="tsd-kind-property tsd-parent-kind-class"><a href="js.math.geom.line.html#x2" class="tsd-kind-icon">x2</a></li> <li class="tsd-kind-property tsd-parent-kind-class"><a href="js.math.geom.line.html#y1" class="tsd-kind-icon">y1</a></li> <li class="tsd-kind-property tsd-parent-kind-class"><a href="js.math.geom.line.html#y2" class="tsd-kind-icon">y2</a></li> <li class="tsd-kind-property tsd-parent-kind-class tsd-is-static"><a href="js.math.geom.line.html#x" class="tsd-kind-icon">X</a></li> <li class="tsd-kind-property tsd-parent-kind-class tsd-is-static"><a href="js.math.geom.line.html#y" class="tsd-kind-icon">Y</a></li> </ul> </section> <section class="tsd-index-section "> <h3>Methods</h3> <ul class="tsd-index-list"> <li class="tsd-kind-method tsd-parent-kind-class"><a href="js.math.geom.line.html#bounds" class="tsd-kind-icon">bounds</a></li> <li class="tsd-kind-method tsd-parent-kind-class"><a href="js.math.geom.line.html#clone" class="tsd-kind-icon">clone</a></li> <li class="tsd-kind-method tsd-parent-kind-class"><a href="js.math.geom.line.html#crossline" class="tsd-kind-icon">cross<wbr>Line</a></li> <li class="tsd-kind-method tsd-parent-kind-class"><a href="js.math.geom.line.html#crosspoint" class="tsd-kind-icon">cross<wbr>Point</a></li> <li class="tsd-kind-method tsd-parent-kind-class"><a href="js.math.geom.line.html#crossray" class="tsd-kind-icon">cross<wbr>Ray</a></li> <li class="tsd-kind-method tsd-parent-kind-class"><a href="js.math.geom.line.html#equals" class="tsd-kind-icon">equals</a></li> <li class="tsd-kind-method tsd-parent-kind-class"><a href="js.math.geom.line.html#inside" class="tsd-kind-icon">inside</a></li> <li class="tsd-kind-method tsd-parent-kind-class"><a href="js.math.geom.line.html#intersects" class="tsd-kind-icon">intersects</a></li> <li class="tsd-kind-method tsd-parent-kind-class"><a href="js.math.geom.line.html#isempty" class="tsd-kind-icon">is<wbr>Empty</a></li> <li class="tsd-kind-method tsd-parent-kind-class"><a href="js.math.geom.line.html#onside" class="tsd-kind-icon">onside</a></li> <li class="tsd-kind-method tsd-parent-kind-class"><a href="js.math.geom.line.html#p1" class="tsd-kind-icon">p1</a></li> <li class="tsd-kind-method tsd-parent-kind-class"><a href="js.math.geom.line.html#p2" class="tsd-kind-icon">p2</a></li> <li class="tsd-kind-method tsd-parent-kind-class"><a href="js.math.geom.line.html#perimeter" class="tsd-kind-icon">perimeter</a></li> <li class="tsd-kind-method tsd-parent-kind-class"><a href="js.math.geom.line.html#set" class="tsd-kind-icon">set</a></li> <li class="tsd-kind-method tsd-parent-kind-class"><a href="js.math.geom.line.html#slope" class="tsd-kind-icon">slope</a></li> <li class="tsd-kind-method tsd-parent-kind-class"><a href="js.math.geom.line.html#tosegment" class="tsd-kind-icon">to<wbr>Segment</a></li> <li class="tsd-kind-method tsd-parent-kind-class"><a href="js.math.geom.line.html#tovector" class="tsd-kind-icon">to<wbr>Vector</a></li> <li class="tsd-kind-method tsd-parent-kind-class"><a href="js.math.geom.line.html#vertexes" class="tsd-kind-icon">vertexes</a></li> <li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="js.math.geom.line.html#distancesqtopoint" class="tsd-kind-icon">distance<wbr>SqTo<wbr>Point</a></li> <li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="js.math.geom.line.html#distancetopoint" class="tsd-kind-icon">distance<wbr>ToPoint</a></li> <li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="js.math.geom.line.html#iscollinear" class="tsd-kind-icon">is<wbr>Collinear</a></li> <li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="js.math.geom.line.html#iscollinearline" class="tsd-kind-icon">is<wbr>Collinear<wbr>Line</a></li> <li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="js.math.geom.line.html#position" class="tsd-kind-icon">position</a></li> <li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="js.math.geom.line.html#slope-1" class="tsd-kind-icon">slope</a></li> <li class="tsd-kind-method tsd-parent-kind-class tsd-is-static"><a href="js.math.geom.line.html#toline" class="tsd-kind-icon">to<wbr>Line</a></li> </ul> </section> </div> </section> </section> <section class="tsd-panel-group tsd-member-group "> <h2>Constructors</h2> <section class="tsd-panel tsd-member tsd-kind-constructor tsd-parent-kind-class"> <a name="constructor" class="tsd-anchor"></a> <h3>constructor</h3> <ul class="tsd-signatures tsd-kind-constructor tsd-parent-kind-class"> <li class="tsd-signature tsd-kind-icon">new <wbr>Line<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="js.math.geom.line.html" class="tsd-signature-type">Line</a></li> <li class="tsd-signature tsd-kind-icon">new <wbr>Line<span class="tsd-signature-symbol">(</span>x1<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, y1<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, x2<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, y2<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="js.math.geom.line.html" class="tsd-signature-type">Line</a></li> </ul> <ul class="tsd-descriptions"> <li class="tsd-description"> <aside class="tsd-sources"> </aside> <h4 class="tsd-returns-title">Returns <a href="js.math.geom.line.html" class="tsd-signature-type">Line</a></h4> </li> <li class="tsd-description"> <aside class="tsd-sources"> </aside> <h4 class="tsd-parameters-title">Parameters</h4> <ul class="tsd-parameters"> <li> <h5>x1: <span class="tsd-signature-type">number</span></h5> </li> <li> <h5>y1: <span class="tsd-signature-type">number</span></h5> </li> <li> <h5>x2: <span class="tsd-signature-type">number</span></h5> </li> <li> <h5>y2: <span class="tsd-signature-type">number</span></h5> </li> </ul> <h4 class="tsd-returns-title">Returns <a href="js.math.geom.line.html" class="tsd-signature-type">Line</a></h4> </li> </ul> </section> </section> <section class="tsd-panel-group tsd-member-group "> <h2>Properties</h2> <section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class"> <a name="x1" class="tsd-anchor"></a> <h3>x1</h3> <div class="tsd-signature tsd-kind-icon">x1<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div> <aside class="tsd-sources"> </aside> </section> <section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class"> <a name="x2" class="tsd-anchor"></a> <h3>x2</h3> <div class="tsd-signature tsd-kind-icon">x2<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div> <aside class="tsd-sources"> </aside> </section> <section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class"> <a name="y1" class="tsd-anchor"></a> <h3>y1</h3> <div class="tsd-signature tsd-kind-icon">y1<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div> <aside class="tsd-sources"> </aside> </section> <section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class"> <a name="y2" class="tsd-anchor"></a> <h3>y2</h3> <div class="tsd-signature tsd-kind-icon">y2<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">number</span></div> <aside class="tsd-sources"> </aside> </section> <section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-static"> <a name="x" class="tsd-anchor"></a> <h3><span class="tsd-flag ts-flagStatic">Static</span> X</h3> <div class="tsd-signature tsd-kind-icon">X<span class="tsd-signature-symbol">:</span> <a href="js.math.geom.line.html" class="tsd-signature-type">Line</a><span class="tsd-signature-symbol"> = new Line(0, 0, 1, 0)</span></div> <aside class="tsd-sources"> </aside> </section> <section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-static"> <a name="y" class="tsd-anchor"></a> <h3><span class="tsd-flag ts-flagStatic">Static</span> Y</h3> <div class="tsd-signature tsd-kind-icon">Y<span class="tsd-signature-symbol">:</span> <a href="js.math.geom.line.html" class="tsd-signature-type">Line</a><span class="tsd-signature-symbol"> = new Line(0, 0, 0, 1)</span></div> <aside class="tsd-sources"> </aside> </section> </section> <section class="tsd-panel-group tsd-member-group "> <h2>Methods</h2> <section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class"> <a name="bounds" class="tsd-anchor"></a> <h3>bounds</h3> <ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class"> <li class="tsd-signature tsd-kind-icon">bounds<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="js.math.geom.rect.html" class="tsd-signature-type">Rect</a></li> </ul> <ul class="tsd-descriptions"> <li class="tsd-description"> <aside class="tsd-sources"> <p>Implementation of <a href="../interfaces/js.math.geom.shape.html">Shape</a>.<a href="../interfaces/js.math.geom.shape.html#bounds">bounds</a></p> </aside> <h4 class="tsd-returns-title">Returns <a href="js.math.geom.rect.html" class="tsd-signature-type">Rect</a></h4> </li> </ul> </section> <section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class"> <a name="clone" class="tsd-anchor"></a> <h3>clone</h3> <ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class"> <li class="tsd-signature tsd-kind-icon">clone<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li> </ul> <ul class="tsd-descriptions"> <li class="tsd-description"> <aside class="tsd-sources"> <p>Implementation of <a href="../interfaces/js.math.geom.shape.html">Shape</a>.<a href="../interfaces/js.math.geom.shape.html#clone">clone</a></p> </aside> <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4> </li> </ul> </section> <section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class"> <a name="crossline" class="tsd-anchor"></a> <h3>cross<wbr>Line</h3> <ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class"> <li class="tsd-signature tsd-kind-icon">cross<wbr>Line<span class="tsd-signature-symbol">(</span>l<span class="tsd-signature-symbol">: </span><a href="js.math.geom.line.html" class="tsd-signature-type">Line</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a></li> </ul> <ul class="tsd-descriptions"> <li class="tsd-description"> <aside class="tsd-sources"> </aside> <div class="tsd-comment tsd-typography"> <div class="lead"> <p>Returns a cross point of Line L. 求与直线的交点。</p> </div> </div> <h4 class="tsd-parameters-title">Parameters</h4> <ul class="tsd-parameters"> <li> <h5>l: <a href="js.math.geom.line.html" class="tsd-signature-type">Line</a></h5> </li> </ul> <h4 class="tsd-returns-title">Returns <a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a></h4> <p>If this line is parallel to Line L, then return null.</p> </li> </ul> </section> <section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class"> <a name="crosspoint" class="tsd-anchor"></a> <h3>cross<wbr>Point</h3> <ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class"> <li class="tsd-signature tsd-kind-icon">cross<wbr>Point<span class="tsd-signature-symbol">(</span>p<span class="tsd-signature-symbol">: </span><a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a></li> </ul> <ul class="tsd-descriptions"> <li class="tsd-description"> <aside class="tsd-sources"> </aside> <div class="tsd-comment tsd-typography"> <div class="lead"> <p>Returns a vertical cross point with P. 求点P到直线的垂直交点。</p> </div> </div> <h4 class="tsd-parameters-title">Parameters</h4> <ul class="tsd-parameters"> <li> <h5>p: <a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a></h5> </li> </ul> <h4 class="tsd-returns-title">Returns <a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a></h4> </li> </ul> </section> <section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class"> <a name="crossray" class="tsd-anchor"></a> <h3>cross<wbr>Ray</h3> <ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class"> <li class="tsd-signature tsd-kind-icon">cross<wbr>Ray<span class="tsd-signature-symbol">(</span>p<span class="tsd-signature-symbol">: </span><a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a>, rad<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-symbol">[</span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">]</span></li> </ul> <ul class="tsd-descriptions"> <li class="tsd-description"> <aside class="tsd-sources"> </aside> <div class="tsd-comment tsd-typography"> <div class="lead"> <p>Returns a cross point of this line and Ray(p, rad). 直线与射线的交点。</p> </div> </div> <h4 class="tsd-parameters-title">Parameters</h4> <ul class="tsd-parameters"> <li> <h5>p: <a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a></h5> </li> <li> <h5>rad: <span class="tsd-signature-type">number</span></h5> </li> </ul> <h4 class="tsd-returns-title">Returns <span class="tsd-signature-symbol">[</span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">, </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">]</span></h4> <p>If the cross point is not exist, then return null.</p> </li> </ul> </section> <section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class"> <a name="equals" class="tsd-anchor"></a> <h3>equals</h3> <ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class"> <li class="tsd-signature tsd-kind-icon">equals<span class="tsd-signature-symbol">(</span>s<span class="tsd-signature-symbol">: </span><a href="js.math.geom.line.html" class="tsd-signature-type">Line</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li> </ul> <ul class="tsd-descriptions"> <li class="tsd-description"> <aside class="tsd-sources"> </aside> <h4 class="tsd-parameters-title">Parameters</h4> <ul class="tsd-parameters"> <li> <h5>s: <a href="js.math.geom.line.html" class="tsd-signature-type">Line</a></h5> </li> </ul> <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4> </li> </ul> </section> <section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class"> <a name="inside" class="tsd-anchor"></a> <h3>inside</h3> <ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class"> <li class="tsd-signature tsd-kind-icon">inside<span class="tsd-signature-symbol">(</span>s<span class="tsd-signature-symbol">: </span><a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a><span class="tsd-signature-symbol"> | </span><a href="js.math.geom.segment.html" class="tsd-signature-type">Segment</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li> </ul> <ul class="tsd-descriptions"> <li class="tsd-description"> <aside class="tsd-sources"> </aside> <h4 class="tsd-parameters-title">Parameters</h4> <ul class="tsd-parameters"> <li> <h5>s: <a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a><span class="tsd-signature-symbol"> | </span><a href="js.math.geom.segment.html" class="tsd-signature-type">Segment</a></h5> </li> </ul> <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4> </li> </ul> </section> <section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class"> <a name="intersects" class="tsd-anchor"></a> <h3>intersects</h3> <ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class"> <li class="tsd-signature tsd-kind-icon">intersects<span class="tsd-signature-symbol">(</span>s<span class="tsd-signature-symbol">: </span><a href="js.math.geom.segment.html" class="tsd-signature-type">Segment</a><span class="tsd-signature-symbol"> | </span><a href="js.math.geom.line.html" class="tsd-signature-type">Line</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li> </ul> <ul class="tsd-descriptions"> <li class="tsd-description"> <aside class="tsd-sources"> </aside> <h4 class="tsd-parameters-title">Parameters</h4> <ul class="tsd-parameters"> <li> <h5>s: <a href="js.math.geom.segment.html" class="tsd-signature-type">Segment</a><span class="tsd-signature-symbol"> | </span><a href="js.math.geom.line.html" class="tsd-signature-type">Line</a></h5> </li> </ul> <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4> </li> </ul> </section> <section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class"> <a name="isempty" class="tsd-anchor"></a> <h3>is<wbr>Empty</h3> <ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class"> <li class="tsd-signature tsd-kind-icon">is<wbr>Empty<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li> </ul> <ul class="tsd-descriptions"> <li class="tsd-description"> <aside class="tsd-sources"> <p>Implementation of <a href="../interfaces/js.math.geom.shape.html">Shape</a>.<a href="../interfaces/js.math.geom.shape.html#isempty">isEmpty</a></p> </aside> <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4> </li> </ul> </section> <section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class"> <a name="onside" class="tsd-anchor"></a> <h3>onside</h3> <ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class"> <li class="tsd-signature tsd-kind-icon">onside<span class="tsd-signature-symbol">(</span>p<span class="tsd-signature-symbol">: </span><a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li> </ul> <ul class="tsd-descriptions"> <li class="tsd-description"> <aside class="tsd-sources"> <p>Implementation of <a href="../interfaces/js.math.geom.shape.html">Shape</a>.<a href="../interfaces/js.math.geom.shape.html#onside">onside</a></p> </aside> <h4 class="tsd-parameters-title">Parameters</h4> <ul class="tsd-parameters"> <li> <h5>p: <a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a></h5> </li> </ul> <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4> </li> </ul> </section> <section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class"> <a name="p1" class="tsd-anchor"></a> <h3>p1</h3> <ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class"> <li class="tsd-signature tsd-kind-icon">p1<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a></li> <li class="tsd-signature tsd-kind-icon">p1<span class="tsd-signature-symbol">(</span>x<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, y<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li> </ul> <ul class="tsd-descriptions"> <li class="tsd-description"> <aside class="tsd-sources"> </aside> <h4 class="tsd-returns-title">Returns <a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a></h4> </li> <li class="tsd-description"> <aside class="tsd-sources"> </aside> <h4 class="tsd-parameters-title">Parameters</h4> <ul class="tsd-parameters"> <li> <h5>x: <span class="tsd-signature-type">number</span></h5> </li> <li> <h5>y: <span class="tsd-signature-type">number</span></h5> </li> </ul> <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4> </li> </ul> </section> <section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class"> <a name="p2" class="tsd-anchor"></a> <h3>p2</h3> <ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class"> <li class="tsd-signature tsd-kind-icon">p2<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a></li> <li class="tsd-signature tsd-kind-icon">p2<span class="tsd-signature-symbol">(</span>x<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span>, y<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li> </ul> <ul class="tsd-descriptions"> <li class="tsd-description"> <aside class="tsd-sources"> </aside> <h4 class="tsd-returns-title">Returns <a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a></h4> </li> <li class="tsd-description"> <aside class="tsd-sources"> </aside> <h4 class="tsd-parameters-title">Parameters</h4> <ul class="tsd-parameters"> <li> <h5>x: <span class="tsd-signature-type">number</span></h5> </li> <li> <h5>y: <span class="tsd-signature-type">number</span></h5> </li> </ul> <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4> </li> </ul> </section> <section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class"> <a name="perimeter" class="tsd-anchor"></a> <h3>perimeter</h3> <ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class"> <li class="tsd-signature tsd-kind-icon">perimeter<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li> </ul> <ul class="tsd-descriptions"> <li class="tsd-description"> <aside class="tsd-sources"> <p>Implementation of <a href="../interfaces/js.math.geom.shape.html">Shape</a>.<a href="../interfaces/js.math.geom.shape.html#perimeter">perimeter</a></p> </aside> <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4> </li> </ul> </section> <section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class"> <a name="set" class="tsd-anchor"></a> <h3>set</h3> <ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class"> <li class="tsd-signature tsd-kind-icon">set<span class="tsd-signature-symbol">(</span>l<span class="tsd-signature-symbol">: </span><a href="js.math.geom.line.html" class="tsd-signature-type">Line</a><span class="tsd-signature-symbol"> | </span><a href="js.math.geom.segment.html" class="tsd-signature-type">Segment</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li> <li class="tsd-signature tsd-kind-icon">set<span class="tsd-signature-symbol">(</span>p1<span class="tsd-signature-symbol">: </span><a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a>, p2<span class="tsd-signature-symbol">: </span><a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li> </ul> <ul class="tsd-descriptions"> <li class="tsd-description"> <aside class="tsd-sources"> </aside> <h4 class="tsd-parameters-title">Parameters</h4> <ul class="tsd-parameters"> <li> <h5>l: <a href="js.math.geom.line.html" class="tsd-signature-type">Line</a><span class="tsd-signature-symbol"> | </span><a href="js.math.geom.segment.html" class="tsd-signature-type">Segment</a></h5> </li> </ul> <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4> </li> <li class="tsd-description"> <aside class="tsd-sources"> </aside> <h4 class="tsd-parameters-title">Parameters</h4> <ul class="tsd-parameters"> <li> <h5>p1: <a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a></h5> </li> <li> <h5>p2: <a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a></h5> </li> </ul> <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4> </li> </ul> </section> <section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class"> <a name="slope" class="tsd-anchor"></a> <h3>slope</h3> <ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class"> <li class="tsd-signature tsd-kind-icon">slope<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li> </ul> <ul class="tsd-descriptions"> <li class="tsd-description"> <aside class="tsd-sources"> </aside> <div class="tsd-comment tsd-typography"> <div class="lead"> <p>斜率</p> </div> </div> <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4> </li> </ul> </section> <section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class"> <a name="tosegment" class="tsd-anchor"></a> <h3>to<wbr>Segment</h3> <ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class"> <li class="tsd-signature tsd-kind-icon">to<wbr>Segment<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="js.math.geom.segment.html" class="tsd-signature-type">Segment</a></li> </ul> <ul class="tsd-descriptions"> <li class="tsd-description"> <aside class="tsd-sources"> </aside> <h4 class="tsd-returns-title">Returns <a href="js.math.geom.segment.html" class="tsd-signature-type">Segment</a></h4> </li> </ul> </section> <section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class"> <a name="tovector" class="tsd-anchor"></a> <h3>to<wbr>Vector</h3> <ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class"> <li class="tsd-signature tsd-kind-icon">to<wbr>Vector<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="js.math.vector2.html" class="tsd-signature-type">Vector2</a></li> </ul> <ul class="tsd-descriptions"> <li class="tsd-description"> <aside class="tsd-sources"> </aside> <h4 class="tsd-returns-title">Returns <a href="js.math.vector2.html" class="tsd-signature-type">Vector2</a></h4> </li> </ul> </section> <section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class"> <a name="vertexes" class="tsd-anchor"></a> <h3>vertexes</h3> <ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class"> <li class="tsd-signature tsd-kind-icon">vertexes<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a><span class="tsd-signature-symbol">[]</span></li> <li class="tsd-signature tsd-kind-icon">vertexes<span class="tsd-signature-symbol">(</span>ps<span class="tsd-signature-symbol">: </span><a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a><span class="tsd-signature-symbol">[]</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">this</span></li> </ul> <ul class="tsd-descriptions"> <li class="tsd-description"> <aside class="tsd-sources"> <p>Implementation of <a href="../interfaces/js.math.geom.shape.html">Shape</a>.<a href="../interfaces/js.math.geom.shape.html#vertexes">vertexes</a></p> </aside> <h4 class="tsd-returns-title">Returns <a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a><span class="tsd-signature-symbol">[]</span></h4> </li> <li class="tsd-description"> <aside class="tsd-sources"> <p>Implementation of <a href="../interfaces/js.math.geom.shape.html">Shape</a>.<a href="../interfaces/js.math.geom.shape.html#vertexes">vertexes</a></p> </aside> <h4 class="tsd-parameters-title">Parameters</h4> <ul class="tsd-parameters"> <li> <h5>ps: <a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a><span class="tsd-signature-symbol">[]</span></h5> </li> </ul> <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">this</span></h4> </li> </ul> </section> <section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-static"> <a name="distancesqtopoint" class="tsd-anchor"></a> <h3><span class="tsd-flag ts-flagStatic">Static</span> distance<wbr>SqTo<wbr>Point</h3> <ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-static"> <li class="tsd-signature tsd-kind-icon">distance<wbr>SqTo<wbr>Point<span class="tsd-signature-symbol">(</span>p1<span class="tsd-signature-symbol">: </span><a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a>, p2<span class="tsd-signature-symbol">: </span><a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a>, p<span class="tsd-signature-symbol">: </span><a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li> </ul> <ul class="tsd-descriptions"> <li class="tsd-description"> <aside class="tsd-sources"> </aside> <div class="tsd-comment tsd-typography"> <div class="lead"> <p>Returns the square of the distance from a point to a line. The distance measured is the distance between the specified point and the closest point on the infinitely-extended line defined by the specified coordinates. If the specified point intersects the line, this method returns 0.0.</p> </div> </div> <h4 class="tsd-parameters-title">Parameters</h4> <ul class="tsd-parameters"> <li> <h5>p1: <a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a></h5> </li> <li> <h5>p2: <a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a></h5> </li> <li> <h5>p: <a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a></h5> </li> </ul> <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4> <p>a value that is the square of the distance from the specified point to the specified line.</p> </li> </ul> </section> <section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-static"> <a name="distancetopoint" class="tsd-anchor"></a> <h3><span class="tsd-flag ts-flagStatic">Static</span> distance<wbr>ToPoint</h3> <ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-static"> <li class="tsd-signature tsd-kind-icon">distance<wbr>ToPoint<span class="tsd-signature-symbol">(</span>p1<span class="tsd-signature-symbol">: </span><a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a>, p2<span class="tsd-signature-symbol">: </span><a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a>, p<span class="tsd-signature-symbol">: </span><a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li> </ul> <ul class="tsd-descriptions"> <li class="tsd-description"> <aside class="tsd-sources"> </aside> <div class="tsd-comment tsd-typography"> <div class="lead"> <p>Returns the distance from a point to a line. The distance measured is the distance between the specified point and the closest point on the infinitely-extended line defined by the specified coordinates. If the specified point intersects the line, this method returns 0.0.</p> </div> </div> <h4 class="tsd-parameters-title">Parameters</h4> <ul class="tsd-parameters"> <li> <h5>p1: <a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a></h5> </li> <li> <h5>p2: <a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a></h5> </li> <li> <h5>p: <a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a></h5> </li> </ul> <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4> <p>a value that is the distance from the specified point to the specified line.</p> </li> </ul> </section> <section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-static"> <a name="iscollinear" class="tsd-anchor"></a> <h3><span class="tsd-flag ts-flagStatic">Static</span> is<wbr>Collinear</h3> <ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-static"> <li class="tsd-signature tsd-kind-icon">is<wbr>Collinear<span class="tsd-signature-symbol">(</span>p1<span class="tsd-signature-symbol">: </span><a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a>, p2<span class="tsd-signature-symbol">: </span><a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a>, p3<span class="tsd-signature-symbol">: </span><a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li> </ul> <ul class="tsd-descriptions"> <li class="tsd-description"> <aside class="tsd-sources"> </aside> <div class="tsd-comment tsd-typography"> <div class="lead"> <p>P1,P2,P3 is collinear. 三点是否共线</p> </div> </div> <h4 class="tsd-parameters-title">Parameters</h4> <ul class="tsd-parameters"> <li> <h5>p1: <a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a></h5> </li> <li> <h5>p2: <a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a></h5> </li> <li> <h5>p3: <a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a></h5> </li> </ul> <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4> </li> </ul> </section> <section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-static"> <a name="iscollinearline" class="tsd-anchor"></a> <h3><span class="tsd-flag ts-flagStatic">Static</span> is<wbr>Collinear<wbr>Line</h3> <ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-static"> <li class="tsd-signature tsd-kind-icon">is<wbr>Collinear<wbr>Line<span class="tsd-signature-symbol">(</span>l1<span class="tsd-signature-symbol">: </span><a href="js.math.geom.line.html" class="tsd-signature-type">Line</a><span class="tsd-signature-symbol"> | </span><a href="js.math.geom.segment.html" class="tsd-signature-type">Segment</a>, l2<span class="tsd-signature-symbol">: </span><a href="js.math.geom.line.html" class="tsd-signature-type">Line</a><span class="tsd-signature-symbol"> | </span><a href="js.math.geom.segment.html" class="tsd-signature-type">Segment</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li> </ul> <ul class="tsd-descriptions"> <li class="tsd-description"> <aside class="tsd-sources"> </aside> <div class="tsd-comment tsd-typography"> <div class="lead"> <p>Line is collinear with Line2. 两直线或线段是否共线</p> </div> </div> <h4 class="tsd-parameters-title">Parameters</h4> <ul class="tsd-parameters"> <li> <h5>l1: <a href="js.math.geom.line.html" class="tsd-signature-type">Line</a><span class="tsd-signature-symbol"> | </span><a href="js.math.geom.segment.html" class="tsd-signature-type">Segment</a></h5> </li> <li> <h5>l2: <a href="js.math.geom.line.html" class="tsd-signature-type">Line</a><span class="tsd-signature-symbol"> | </span><a href="js.math.geom.segment.html" class="tsd-signature-type">Segment</a></h5> </li> </ul> <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4> </li> </ul> </section> <section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-static"> <a name="position" class="tsd-anchor"></a> <h3><span class="tsd-flag ts-flagStatic">Static</span> position</h3> <ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-static"> <li class="tsd-signature tsd-kind-icon">position<span class="tsd-signature-symbol">(</span>p1<span class="tsd-signature-symbol">: </span><a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a>, p2<span class="tsd-signature-symbol">: </span><a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a>, p3<span class="tsd-signature-symbol">: </span><a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a>, p4<span class="tsd-signature-symbol">: </span><a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li> </ul> <ul class="tsd-descriptions"> <li class="tsd-description"> <aside class="tsd-sources"> </aside> <div class="tsd-comment tsd-typography"> <div class="lead"> <p>Returns the relation position of Line1(p1,p2) and Line2(p3,p4). 直线1与直线2的位置关系。</p> </div> </div> <h4 class="tsd-parameters-title">Parameters</h4> <ul class="tsd-parameters"> <li> <h5>p1: <a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a></h5> </li> <li> <h5>p2: <a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a></h5> </li> <li> <h5>p3: <a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a></h5> </li> <li> <h5>p4: <a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a></h5> </li> </ul> <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4> <p>-1 is Parallel and Non-Collinear; 0 is Collinear; 1 is Cross and Non-Vertical; 2 is Cross and Vertical.</p> </li> </ul> </section> <section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-static"> <a name="slope-1" class="tsd-anchor"></a> <h3><span class="tsd-flag ts-flagStatic">Static</span> slope</h3> <ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-static"> <li class="tsd-signature tsd-kind-icon">slope<span class="tsd-signature-symbol">(</span>p1<span class="tsd-signature-symbol">: </span><a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a>, p2<span class="tsd-signature-symbol">: </span><a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span></li> </ul> <ul class="tsd-descriptions"> <li class="tsd-description"> <aside class="tsd-sources"> </aside> <div class="tsd-comment tsd-typography"> <div class="lead"> <p>Caculate the slope of Segment P1P2. 计算线段(p1,p2)的斜率。当线段与X轴垂直时，斜率不存在</p> </div> </div> <h4 class="tsd-parameters-title">Parameters</h4> <ul class="tsd-parameters"> <li> <h5>p1: <a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a></h5> </li> <li> <h5>p2: <a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a></h5> </li> </ul> <h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">number</span></h4> <p>when P1P2 is vertical to the X, then return null.</p> </li> </ul> </section> <section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-static"> <a name="toline" class="tsd-anchor"></a> <h3><span class="tsd-flag ts-flagStatic">Static</span> to<wbr>Line</h3> <ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-static"> <li class="tsd-signature tsd-kind-icon">to<wbr>Line<span class="tsd-signature-symbol">(</span>p1<span class="tsd-signature-symbol">: </span><a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a>, p2<span class="tsd-signature-symbol">: </span><a href="../modules/js.math.html#arraypoint2" class="tsd-signature-type">ArrayPoint2</a><sp