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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>classes/segment.js - Documentation</title>
<script src="scripts/prettify/prettify.js"></script>
<script src="scripts/prettify/lang-css.js"></script>
<!--[if lt IE 9]>
<script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
<link type="text/css" rel="stylesheet" href="https://code.ionicframework.com/ionicons/2.0.1/css/ionicons.min.css">
<link type="text/css" rel="stylesheet" href="styles/prettify-tomorrow.css">
<link type="text/css" rel="stylesheet" href="styles/jsdoc-default.css">
</head>
<body>
<input type="checkbox" id="nav-trigger" class="nav-trigger" />
<label for="nav-trigger" class="navicon-button x">
<div class="navicon"></div>
</label>
<label for="nav-trigger" class="overlay"></label>
<nav>
<li class="nav-link nav-home-link"><a href="index.html">Home</a></li><li class="nav-heading">Classes</li><li class="nav-heading"><span class="nav-item-type type-class">C</span><span class="nav-item-name"><a href="Arc.html">Arc</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Arc.html#breakToFunctional">breakToFunctional</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Arc.html#chordHeight">chordHeight</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Arc.html#clone">clone</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Arc.html#contains">contains</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Arc.html#distanceTo">distanceTo</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Arc.html#intersect">intersect</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Arc.html#middle">middle</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Arc.html#reverse">reverse</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Arc.html#rotate">rotate</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Arc.html#split">split</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Arc.html#svg">svg</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Arc.html#tangentInEnd">tangentInEnd</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Arc.html#tangentInStart">tangentInStart</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Arc.html#toJSON">toJSON</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Arc.html#transform">transform</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Arc.html#translate">translate</a></span></li><li class="nav-heading"><span class="nav-item-type type-class">C</span><span class="nav-item-name"><a href="Box.html">Box</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Box.html#clone">clone</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Box.html#equal_to">equal_to</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Box.html#intersect">intersect</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Box.html#less_than">less_than</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Box.html#merge">merge</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Box.html#not_intersect">not_intersect</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Box.html#set">set</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Box.html#svg">svg</a></span></li><li class="nav-heading"><span class="nav-item-type type-class">C</span><span class="nav-item-name"><a href="Circle.html">Circle</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Circle.html#clone">clone</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Circle.html#contains">contains</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Circle.html#distanceTo">distanceTo</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Circle.html#intersect">intersect</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Circle.html#svg">svg</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Circle.html#toArc">toArc</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Circle.html#toJSON">toJSON</a></span></li><li class="nav-heading"><span class="nav-item-type type-class">C</span><span class="nav-item-name"><a href="CircularLinkedList.html">CircularLinkedList</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="CircularLinkedList.html#append">append</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="CircularLinkedList.html#insert">insert</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="CircularLinkedList.html#remove">remove</a></span></li><li class="nav-heading"><span class="nav-item-type type-class">C</span><span class="nav-item-name"><a href="Edge.html">Edge</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Edge.html#contains">contains</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Edge.html#middle">middle</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Edge.html#setInclusion">setInclusion</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Edge.html#setOverlap">setOverlap</a></span></li><li class="nav-heading"><span class="nav-item-type type-class">C</span><span class="nav-item-name"><a href="Errors.html">Errors</a></span></li><li class="nav-heading"><span class="nav-item-type type-class">C</span><span class="nav-item-name"><a href="Errors.ILLEGAL_PARAMETERS.html">ILLEGAL_PARAMETERS</a></span></li><li class="nav-heading"><span class="nav-item-type type-class">C</span><span class="nav-item-name"><a href="Errors.ZERO_DIVISION.html">ZERO_DIVISION</a></span></li><li class="nav-heading"><span class="nav-item-type type-class">C</span><span class="nav-item-name"><a href="Face.html">Face</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Face.html#append">append</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Face.html#area">area</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Face.html#insert">insert</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Face.html#isSimple">isSimple</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Face.html#orientation">orientation</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Face.html#remove">remove</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Face.html#reverse">reverse</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Face.html#setArcLength">setArcLength</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Face.html#signedArea">signedArea</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Face.html#svg">svg</a></span></li><li class="nav-heading"><span class="nav-item-type type-class">C</span><span class="nav-item-name"><a href="Line.html">Line</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Line.html#clone">clone</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Line.html#contains">contains</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Line.html#distanceTo">distanceTo</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Line.html#incidentTo">incidentTo</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Line.html#intersect">intersect</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Line.html#parallelTo">parallelTo</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Line.html#svg">svg</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Line.html#toJSON">toJSON</a></span></li><li class="nav-heading"><span class="nav-item-type type-class">C</span><span class="nav-item-name"><a href="LinkedList.html">LinkedList</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="LinkedList.html#append">append</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="LinkedList.html#insert">insert</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="LinkedList.html#isEmpty">isEmpty</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="LinkedList.html#remove">remove</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="LinkedList.html#toArray">toArray</a></span></li><li class="nav-heading"><span class="nav-item-type type-class">C</span><span class="nav-item-name"><a href="Matrix.html">Matrix</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Matrix.html#clone">clone</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Matrix.html#equalTo">equalTo</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Matrix.html#multiply">multiply</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Matrix.html#rotate">rotate</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Matrix.html#scale">scale</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Matrix.html#transform">transform</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Matrix.html#translate">translate</a></span></li><li class="nav-heading"><span class="nav-item-type type-class">C</span><span class="nav-item-name"><a href="PlanarSet.html">PlanarSet</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="PlanarSet.html#add">add</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="PlanarSet.html#clear">clear</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="PlanarSet.html#delete">delete</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="PlanarSet.html#hit">hit</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="PlanarSet.html#search">search</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="PlanarSet.html#svg">svg</a></span></li><li class="nav-heading"><span class="nav-item-type type-class">C</span><span class="nav-item-name"><a href="Point.html">Point</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Point.html#clone">clone</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Point.html#distanceTo">distanceTo</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Point.html#equalTo">equalTo</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Point.html#leftTo">leftTo</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Point.html#lessThan">lessThan</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Point.html#on">on</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Point.html#projectionOn">projectionOn</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Point.html#rotate">rotate</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Point.html#svg">svg</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Point.html#toJSON">toJSON</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Point.html#transform">transform</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Point.html#translate">translate</a></span></li><li class="nav-heading"><span class="nav-item-type type-class">C</span><span class="nav-item-name"><a href="Polygon.html">Polygon</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Polygon.html#addFace">addFace</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Polygon.html#addVertex">addVertex</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Polygon.html#area">area</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Polygon.html#clone">clone</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Polygon.html#contains">contains</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Polygon.html#deleteFace">deleteFace</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Polygon.html#distanceTo">distanceTo</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Polygon.html#intersect">intersect</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Polygon.html#isEmpty">isEmpty</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Polygon.html#isValid">isValid</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Polygon.html#removeChain">removeChain</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Polygon.html#rotate">rotate</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Polygon.html#svg">svg</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Polygon.html#toJSON">toJSON</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Polygon.html#transform">transform</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Polygon.html#translate">translate</a></span></li><li class="nav-heading"><span class="nav-item-type type-class">C</span><span class="nav-item-name"><a href="Ray.html">Ray</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Ray.html#clone">clone</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Ray.html#intersect">intersect</a></span></li><li class="nav-heading"><span class="nav-item-type type-class">C</span><span class="nav-item-name"><a href="Segment.html">Segment</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Segment.html#clone">clone</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Segment.html#contains">contains</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Segment.html#distanceTo">distanceTo</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Segment.html#equalTo">equalTo</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Segment.html#intersect">intersect</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Segment.html#isZeroLength">isZeroLength</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Segment.html#middle">middle</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Segment.html#reverse">reverse</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Segment.html#rotate">rotate</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Segment.html#split">split</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Segment.html#svg">svg</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Segment.html#tangentInEnd">tangentInEnd</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Segment.html#tangentInStart">tangentInStart</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Segment.html#toJSON">toJSON</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Segment.html#transform">transform</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Segment.html#translate">translate</a></span></li><li class="nav-heading"><span class="nav-item-type type-class">C</span><span class="nav-item-name"><a href="Vector.html">Vector</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Vector.html#add">add</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Vector.html#angleTo">angleTo</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Vector.html#clone">clone</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Vector.html#cross">cross</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Vector.html#dot">dot</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Vector.html#equalTo">equalTo</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Vector.html#invert">invert</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Vector.html#multiply">multiply</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Vector.html#normalize">normalize</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Vector.html#projectionOn">projectionOn</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Vector.html#rotate">rotate</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Vector.html#rotate90CCW">rotate90CCW</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Vector.html#rotate90CW">rotate90CW</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Vector.html#subtract">subtract</a></span></li><li class="nav-item"><span class="nav-item-type type-function">F</span><span class="nav-item-name"><a href="Vector.html#toJSON">toJSON</a></span></li><li class="nav-heading"><a href="global.html">Globals</a></li><li class="nav-item"><span class="nav-item-type type-member">M</span><span class="nav-item-name"><a href="global.html#arc">arc</a></span></li><li class="nav-item"><span class="nav-item-type type-member">M</span><span class="nav-item-name"><a 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<h1 class="page-title">classes/segment.js</h1>
<section>
<article>
<pre class="prettyprint source linenums"><code>/**
* Created by Alex Bol on 3/10/2017.
*/
"use strict";
import Flatten from '../flatten';
import * as Intersection from '../algorithms/intersection';
/**
* Class representing a segment
* @type {Segment}
*/
export class Segment {
/**
*
* @param {Point} ps - start point
* @param {Point} pe - end point
*/
constructor(...args) {
/**
* Start point
* @type {Point}
*/
this.ps = new Flatten.Point();
/**
* End Point
* @type {Point}
*/
this.pe = new Flatten.Point();
if (args.length === 0) {
return;
}
if (args.length === 1 && args[0] instanceof Array && args[0].length === 4) {
let coords = args[0];
this.ps = new Flatten.Point(coords[0], coords[1]);
this.pe = new Flatten.Point(coords[2], coords[3]);
return;
}
if (args.length === 1 && args[0] instanceof Object && args[0].name === "segment") {
let {ps, pe} = args[0];
this.ps = new Flatten.Point(ps.x, ps.y);
this.pe = new Flatten.Point(pe.x, pe.y);
return;
}
if (args.length === 2 && args[0] instanceof Flatten.Point && args[1] instanceof Flatten.Point) {
this.ps = args[0].clone();
this.pe = args[1].clone();
return;
}
if (args.length === 4) {
this.ps = new Flatten.Point(args[0], args[1]);
this.pe = new Flatten.Point(args[2], args[3]);
return;
}
throw Flatten.Errors.ILLEGAL_PARAMETERS;
}
/**
* Method clone copies segment and returns a new instance
* @returns {Segment}
*/
clone() {
return new Flatten.Segment(this.start, this.end);
}
/**
* Start point
* @returns {Point}
*/
get start() {
return this.ps;
}
/**
* End point
* @returns {Point}
*/
get end() {
return this.pe;
}
/**
* Returns array of start and end point
* @returns [Point,Point]
*/
get vertices() {
return [this.ps.clone(), this.pe.clone()];
}
/**
* Length of a segment
* @returns {number}
*/
get length() {
return this.start.distanceTo(this.end)[0];
}
/**
* Slope of the line - angle to axe x in radians from 0 to 2PI
* @returns {number}
*/
get slope() {
let vec = new Flatten.Vector(this.start, this.end);
return vec.slope;
}
/**
* Bounding box
* @returns {Box}
*/
get box() {
return new Flatten.Box(
Math.min(this.start.x, this.end.x),
Math.min(this.start.y, this.end.y),
Math.max(this.start.x, this.end.x),
Math.max(this.start.y, this.end.y)
)
}
/**
* Returns true if equals to query segment, false otherwise
* @param {Seg} seg - query segment
* @returns {boolean}
*/
equalTo(seg) {
return this.ps.equalTo(seg.ps) && this.pe.equalTo(seg.pe);
}
/**
* Returns true if segment contains point
* @param {Point} pt Query point
* @returns {boolean}
*/
contains(pt) {
return Flatten.Utils.EQ_0(this.distanceToPoint(pt));
}
/**
* Returns array of intersection points between segment and other shape
* @param {Shape} shape - Shape of the one of supported types <br/>
* @returns {Point[]}
*/
intersect(shape) {
if (shape instanceof Flatten.Point) {
return this.contains(shape) ? [shape] : [];
}
if (shape instanceof Flatten.Line) {
return Intersection.intersectSegment2Line(this, shape);
}
if (shape instanceof Flatten.Segment) {
return Intersection.intersectSegment2Segment(this, shape);
}
if (shape instanceof Flatten.Circle) {
return Intersection.intersectSegment2Circle(this, shape);
}
if (shape instanceof Flatten.Arc) {
return Intersection.intersectSegment2Arc(this, shape);
}
if (shape instanceof Flatten.Polygon) {
return Intersection.intersectSegment2Polygon(this, shape);
}
}
/**
* Calculate distance and shortest segment from segment to shape and return as array [distance, shortest segment]
* @param {Shape} shape Shape of the one of supported types Point, Line, Circle, Segment, Arc, Polygon or Planar Set
* @returns {number} distance from segment to shape
* @returns {Segment} shortest segment between segment and shape (started at segment, ended at shape)
*/
distanceTo(shape) {
if (shape instanceof Flatten.Point) {
let [dist, shortest_segment] = Flatten.Distance.point2segment(shape, this);
shortest_segment = shortest_segment.reverse();
return [dist, shortest_segment];
}
if (shape instanceof Flatten.Circle) {
let [dist, shortest_segment] = Flatten.Distance.segment2circle(this, shape);
return [dist, shortest_segment];
}
if (shape instanceof Flatten.Line) {
let [dist, shortest_segment] = Flatten.Distance.segment2line(this, shape);
return [dist, shortest_segment];
}
if (shape instanceof Flatten.Segment) {
let [dist, shortest_segment] = Flatten.Distance.segment2segment(this, shape);
return [dist, shortest_segment];
}
if (shape instanceof Flatten.Arc) {
let [dist, shortest_segment] = Flatten.Distance.segment2arc(this, shape);
return [dist, shortest_segment];
}
if (shape instanceof Flatten.Polygon) {
let [dist, shortest_segment] = Flatten.Distance.shape2polygon(this, shape);
return [dist, shortest_segment];
}
if (shape instanceof Flatten.PlanarSet) {
let [dist, shortest_segment] = Flatten.Distance.shape2planarSet(this, shape);
return [dist, shortest_segment];
}
}
/**
* Returns unit vector in the direction from start to end
* @returns {Vector}
*/
tangentInStart() {
let vec = new Flatten.Vector(this.start, this.end);
return vec.normalize();
}
/**
* Return unit vector in the direction from end to start
* @returns {Vector}
*/
tangentInEnd() {
let vec = new Flatten.Vector(this.end, this.start);
return vec.normalize();
}
/**
* Returns new segment with swapped start and end points
* @returns {Segment}
*/
reverse() {
return new Segment(this.end, this.start);
}
/**
* When point belongs to segment, return array of two segments split by given point,
* if point is inside segment. Returns clone of this segment if query point is incident
* to start or end point of the segment. Returns empty array if point does not belong to segment
* @param {Point} pt Query point
* @returns {Segment[]}
*/
split(pt) {
if (!this.contains(pt))
return [];
if (this.start.equalTo(this.end))
return [this.clone()];
if (this.start.equalTo(pt) || this.end.equalTo(pt))
return [this];
return [
new Flatten.Segment(this.start, pt),
new Flatten.Segment(pt, this.end)
]
}
/**
* Return middle point of the segment
* @returns {Point}
*/
middle() {
return new Flatten.Point((this.start.x + this.end.x) / 2, (this.start.y + this.end.y) / 2);
}
distanceToPoint(pt) {
let [dist, ...rest] = Flatten.Distance.point2segment(pt, this);
return dist;
};
definiteIntegral(ymin = 0.0) {
let dx = this.end.x - this.start.x;
let dy1 = this.start.y - ymin;
let dy2 = this.end.y - ymin;
return (dx * (dy1 + dy2) / 2);
}
/**
* Returns new segment translated by vector vec
* @param {Vector} vec
* @returns {Segment}
*/
translate(...args) {
return new Segment(this.ps.translate(...args), this.pe.translate(...args));
}
/**
* Return new segment rotated by given angle around given point
* If point omitted, rotate around origin (0,0)
* Positive value of angle defines rotation counter clockwise, negative - clockwise
* @param {number} angle - rotation angle in radians
* @param {Point} center - center point, default is (0,0)
* @returns {Segment}
*/
rotate(angle = 0, center = new Flatten.Point()) {
let m = new Flatten.Matrix();
m = m.translate(center.x, center.y).rotate(angle).translate(-center.x, -center.y);
return this.transform(m);
}
/**
* Return new segment transformed using affine transformation matrix
* @param {Matrix} matrix - affine transformation matrix
* @returns {Segment} - transformed segment
*/
transform(matrix = new Flatten.Matrix()) {
return new Segment(this.ps.transform(matrix), this.pe.transform(matrix))
}
/**
* Returns true if segment start is equal to segment end up to DP_TOL
* @returns {boolean}
*/
isZeroLength() {
return this.ps.equalTo(this.pe)
}
/**
* Return string to draw segment in svg
* @param {Object} attrs - an object with attributes for svg path element,
* like "stroke", "strokeWidth" <br/>
* Defaults are stroke:"black", strokeWidth:"1"
* @returns {string}
*/
svg(attrs = {}) {
let {stroke, strokeWidth, id, className} = attrs;
// let rest_str = Object.keys(rest).reduce( (acc, key) => acc += ` ${key}="${rest[key]}"`, "");
let id_str = (id && id.length > 0) ? `id="${id}"` : "";
let class_str = (className && className.length > 0) ? `class="${className}"` : "";
return `\n<line x1="${this.start.x}" y1="${this.start.y}" x2="${this.end.x}" y2="${this.end.y}" stroke="${stroke || "black"}" stroke-width="${strokeWidth || 1}" ${id_str} ${class_str} />`;
}
/**
* This method returns an object that defines how data will be
* serialized when called JSON.stringify() method
* @returns {Object}
*/
toJSON() {
return Object.assign({}, this, {name: "segment"});
}
};
Flatten.Segment = Segment;
/**
* Shortcut method to create new segment
*/
export const segment = (...args) => new Flatten.Segment(...args);
Flatten.segment = segment
</code></pre>
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