@flatten-js/core

<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width,initial-scale=1"> <title>classes/circle.js - Documentation</title> <script src="scripts/prettify/prettify.js"></script> <script src="scripts/prettify/lang-css.js"></script>  <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">C<a href="Arc.html">Arc</a></li><li class="nav-item">F<a href="Arc.html#clone">clone</a></li><li class="nav-item">F<a href="Arc.html#contains">contains</a></li><li class="nav-item">F<a href="Arc.html#split">split</a></li><li class="nav-item">F<a href="Arc.html#middle">middle</a></li><li class="nav-item">F<a href="Arc.html#chordHeight">chordHeight</a></li><li class="nav-item">F<a href="Arc.html#intersect">intersect</a></li><li class="nav-item">F<a href="Arc.html#distanceTo">distanceTo</a></li><li class="nav-item">F<a href="Arc.html#breakToFunctional">breakToFunctional</a></li><li class="nav-item">F<a href="Arc.html#tangentInStart">tangentInStart</a></li><li class="nav-item">F<a href="Arc.html#tangentInEnd">tangentInEnd</a></li><li class="nav-item">F<a href="Arc.html#reverse">reverse</a></li><li class="nav-item">F<a href="Arc.html#translate">translate</a></li><li class="nav-item">F<a href="Arc.html#rotate">rotate</a></li><li class="nav-item">F<a href="Arc.html#scale">scale</a></li><li class="nav-item">F<a href="Arc.html#transform">transform</a></li><li class="nav-item">F<a href="Arc.html#sortPoints">sortPoints</a></li><li class="nav-item">F<a href="Arc.html#toJSON">toJSON</a></li><li class="nav-item">F<a href="Arc.html#svg">svg</a></li><li class="nav-heading">C<a href="Box.html">Box</a></li><li class="nav-item">F<a href="Box.html#clone">clone</a></li><li class="nav-item">F<a href="Box.html#not_intersect">not_intersect</a></li><li class="nav-item">F<a href="Box.html#intersect">intersect</a></li><li class="nav-item">F<a href="Box.html#merge">merge</a></li><li class="nav-item">F<a href="Box.html#less_than">less_than</a></li><li class="nav-item">F<a href="Box.html#equal_to">equal_to</a></li><li class="nav-item">F<a href="Box.html#set">set</a></li><li class="nav-item">F<a href="Box.html#toPoints">toPoints</a></li><li class="nav-item">F<a href="Box.html#toSegments">toSegments</a></li><li class="nav-item">F<a href="Box.html#svg">svg</a></li><li class="nav-heading">C<a href="Circle.html">Circle</a></li><li class="nav-item">F<a href="Circle.html#clone">clone</a></li><li class="nav-item">F<a href="Circle.html#contains">contains</a></li><li class="nav-item">F<a href="Circle.html#toArc">toArc</a></li><li class="nav-item">F<a href="Circle.html#intersect">intersect</a></li><li class="nav-item">F<a href="Circle.html#distanceTo">distanceTo</a></li><li class="nav-item">F<a href="Circle.html#toJSON">toJSON</a></li><li class="nav-item">F<a href="Circle.html#svg">svg</a></li><li class="nav-heading">C<a href="Edge.html">Edge</a></li><li class="nav-item">F<a href="Edge.html#middle">middle</a></li><li class="nav-item">F<a href="Edge.html#contains">contains</a></li><li class="nav-item">F<a href="Edge.html#setInclusion">setInclusion</a></li><li class="nav-item">F<a href="Edge.html#setOverlap">setOverlap</a></li><li class="nav-heading">C<a href="Face.html">Face</a></li><li class="nav-item">F<a href="Face.html#append">append</a></li><li class="nav-item">F<a href="Face.html#insert">insert</a></li><li class="nav-item">F<a href="Face.html#remove">remove</a></li><li class="nav-item">F<a href="Face.html#reverse">reverse</a></li><li class="nav-item">F<a href="Face.html#setArcLength">setArcLength</a></li><li class="nav-item">F<a href="Face.html#area">area</a></li><li class="nav-item">F<a href="Face.html#signedArea">signedArea</a></li><li class="nav-item">F<a href="Face.html#orientation">orientation</a></li><li class="nav-item">F<a href="Face.html#isSimple">isSimple</a></li><li class="nav-item">F<a href="Face.html#findEdgeByPoint">findEdgeByPoint</a></li><li class="nav-item">F<a href="Face.html#toPolygon">toPolygon</a></li><li class="nav-item">F<a href="Face.html#svg">svg</a></li><li class="nav-heading">C<a href="Line.html">Line</a></li><li class="nav-item">F<a href="Line.html#clone">clone</a></li><li class="nav-item">F<a href="Line.html#parallelTo">parallelTo</a></li><li class="nav-item">F<a href="Line.html#incidentTo">incidentTo</a></li><li class="nav-item">F<a href="Line.html#contains">contains</a></li><li class="nav-item">F<a href="Line.html#coord">coord</a></li><li class="nav-item">F<a href="Line.html#intersect">intersect</a></li><li class="nav-item">F<a href="Line.html#distanceTo">distanceTo</a></li><li class="nav-item">F<a href="Line.html#split">split</a></li><li class="nav-item">F<a href="Line.html#sortPoints">sortPoints</a></li><li class="nav-item">F<a href="Line.html#toJSON">toJSON</a></li><li class="nav-item">F<a href="Line.html#svg">svg</a></li><li class="nav-heading">C<a href="Matrix.html">Matrix</a></li><li class="nav-item">F<a href="Matrix.html#clone">clone</a></li><li class="nav-item">F<a href="Matrix.html#transform">transform</a></li><li class="nav-item">F<a href="Matrix.html#multiply">multiply</a></li><li class="nav-item">F<a href="Matrix.html#translate">translate</a></li><li class="nav-item">F<a href="Matrix.html#rotate">rotate</a></li><li class="nav-item">F<a href="Matrix.html#scale">scale</a></li><li class="nav-item">F<a href="Matrix.html#equalTo">equalTo</a></li><li class="nav-heading">C<a href="Multiline.html">Multiline</a></li><li class="nav-item">F<a href="Multiline.html#clone">clone</a></li><li class="nav-item">F<a href="Multiline.html#addVertex">addVertex</a></li><li class="nav-item">F<a href="Multiline.html#split">split</a></li><li class="nav-item">F<a href="Multiline.html#findEdgeByPoint">findEdgeByPoint</a></li><li class="nav-item">F<a href="Multiline.html#translate">translate</a></li><li class="nav-item">F<a href="Multiline.html#rotate">rotate</a></li><li class="nav-item">F<a href="Multiline.html#transform">transform</a></li><li class="nav-item">F<a href="Multiline.html#toShapes">toShapes</a></li><li class="nav-item">F<a href="Multiline.html#toJSON">toJSON</a></li><li class="nav-item">F<a href="Multiline.html#svg">svg</a></li><li class="nav-heading">C<a href="Point.html">Point</a></li><li class="nav-item">F<a href="Point.html#clone">clone</a></li><li class="nav-item">F<a href="Point.html#equalTo">equalTo</a></li><li class="nav-item">F<a href="Point.html#lessThan">lessThan</a></li><li class="nav-item">F<a href="Point.html#rotate">rotate</a></li><li class="nav-item">F<a href="Point.html#translate">translate</a></li><li class="nav-item">F<a href="Point.html#transform">transform</a></li><li class="nav-item">F<a href="Point.html#projectionOn">projectionOn</a></li><li class="nav-item">F<a href="Point.html#leftTo">leftTo</a></li><li class="nav-item">F<a href="Point.html#distanceTo">distanceTo</a></li><li class="nav-item">F<a href="Point.html#on">on</a></li><li class="nav-item">F<a href="Point.html#toJSON">toJSON</a></li><li class="nav-item">F<a href="Point.html#svg">svg</a></li><li class="nav-heading">C<a href="Polygon.html">Polygon</a></li><li class="nav-item">F<a href="Polygon.html#clone">clone</a></li><li class="nav-item">F<a href="Polygon.html#isEmpty">isEmpty</a></li><li class="nav-item">F<a href="Polygon.html#isValid">isValid</a></li><li class="nav-item">F<a href="Polygon.html#area">area</a></li><li class="nav-item">F<a href="Polygon.html#addFace">addFace</a></li><li class="nav-item">F<a href="Polygon.html#deleteFace">deleteFace</a></li><li class="nav-item">F<a href="Polygon.html#removeChain">removeChain</a></li><li class="nav-item">F<a href="Polygon.html#addVertex">addVertex</a></li><li class="nav-item">F<a href="Polygon.html#cut">cut</a></li><li class="nav-item">F<a href="Polygon.html#cutFace">cutFace</a></li><li class="nav-item">F<a href="Polygon.html#findEdgeByPoint">findEdgeByPoint</a></li><li class="nav-item">F<a href="Polygon.html#splitToIslands">splitToIslands</a></li><li class="nav-item">F<a href="Polygon.html#reverse">reverse</a></li><li class="nav-item">F<a href="Polygon.html#contains">contains</a></li><li class="nav-item">F<a href="Polygon.html#distanceTo">distanceTo</a></li><li class="nav-item">F<a href="Polygon.html#intersect">intersect</a></li><li class="nav-item">F<a href="Polygon.html#translate">translate</a></li><li class="nav-item">F<a href="Polygon.html#rotate">rotate</a></li><li class="nav-item">F<a href="Polygon.html#transform">transform</a></li><li class="nav-item">F<a href="Polygon.html#toJSON">toJSON</a></li><li class="nav-item">F<a href="Polygon.html#toArray">toArray</a></li><li class="nav-item">F<a href="Polygon.html#svg">svg</a></li><li class="nav-heading">C<a href="Ray.html">Ray</a></li><li class="nav-item">F<a href="Ray.html#clone">clone</a></li><li class="nav-item">F<a href="Ray.html#contains">contains</a></li><li class="nav-item">F<a href="Ray.html#split">split</a></li><li class="nav-item">F<a href="Ray.html#intersect">intersect</a></li><li class="nav-item">F<a href="Ray.html#svg">svg</a></li><li class="nav-heading">C<a href="Segment.html">Segment</a></li><li class="nav-item">F<a href="Segment.html#clone">clone</a></li><li class="nav-item">F<a href="Segment.html#equalTo">equalTo</a></li><li class="nav-item">F<a href="Segment.html#contains">contains</a></li><li class="nav-item">F<a href="Segment.html#intersect">intersect</a></li><li class="nav-item">F<a href="Segment.html#distanceTo">distanceTo</a></li><li class="nav-item">F<a href="Segment.html#tangentInStart">tangentInStart</a></li><li class="nav-item">F<a href="Segment.html#tangentInEnd">tangentInEnd</a></li><li class="nav-item">F<a href="Segment.html#reverse">reverse</a></li><li class="nav-item">F<a href="Segment.html#split">split</a></li><li class="nav-item">F<a href="Segment.html#middle">middle</a></li><li class="nav-item">F<a href="Segment.html#translate">translate</a></li><li class="nav-item">F<a href="Segment.html#rotate">rotate</a></li><li class="nav-item">F<a href="Segment.html#transform">transform</a></li><li class="nav-item">F<a href="Segment.html#isZeroLength">isZeroLength</a></li><li class="nav-item">F<a href="Segment.html#sortPoints">sortPoints</a></li><li class="nav-item">F<a href="Segment.html#toJSON">toJSON</a></li><li class="nav-item">F<a href="Segment.html#svg">svg</a></li><li class="nav-heading">C<a href="Vector.html">Vector</a></li><li class="nav-item">F<a href="Vector.html#clone">clone</a></li><li class="nav-item">F<a href="Vector.html#equalTo">equalTo</a></li><li class="nav-item">F<a href="Vector.html#multiply">multiply</a></li><li class="nav-item">F<a href="Vector.html#dot">dot</a></li><li class="nav-item">F<a href="Vector.html#cross">cross</a></li><li class="nav-item">F<a href="Vector.html#normalize">normalize</a></li><li class="nav-item">F<a href="Vector.html#rotate">rotate</a></li><li class="nav-item">F<a href="Vector.html#rotate90CCW">rotate90CCW</a></li><li class="nav-item">F<a href="Vector.html#rotate90CW">rotate90CW</a></li><li class="nav-item">F<a href="Vector.html#invert">invert</a></li><li class="nav-item">F<a href="Vector.html#add">add</a></li><li class="nav-item">F<a href="Vector.html#subtract">subtract</a></li><li class="nav-item">F<a href="Vector.html#angleTo">angleTo</a></li><li class="nav-item">F<a href="Vector.html#projectionOn">projectionOn</a></li><li class="nav-item">F<a href="Vector.html#toJSON">toJSON</a></li><li class="nav-heading">C<a href="CircularLinkedList.html">CircularLinkedList</a></li><li class="nav-item">F<a href="CircularLinkedList.html#append">append</a></li><li class="nav-item">F<a href="CircularLinkedList.html#insert">insert</a></li><li class="nav-item">F<a href="CircularLinkedList.html#remove">remove</a></li><li class="nav-heading">C<a href="DE9IM.html">DE9IM</a></li><li class="nav-item">F<a href="DE9IM.html#toString">toString</a></li><li class="nav-heading">C<a href="LinkedList.html">LinkedList</a></li><li class="nav-item">F<a href="LinkedList.html#toArray">toArray</a></li><li class="nav-item">F<a href="LinkedList.html#append">append</a></li><li class="nav-item">F<a href="LinkedList.html#insert">insert</a></li><li class="nav-item">F<a href="LinkedList.html#remove">remove</a></li><li class="nav-item">F<a href="LinkedList.html#isEmpty">isEmpty</a></li><li class="nav-item">F<a href="LinkedList.html#.testInfiniteLoop">testInfiniteLoop</a></li><li class="nav-heading">C<a href="PlanarSet.html">PlanarSet</a></li><li class="nav-item">F<a href="PlanarSet.html#add">add</a></li><li class="nav-item">F<a href="PlanarSet.html#delete">delete</a></li><li class="nav-item">F<a href="PlanarSet.html#clear">clear</a></li><li class="nav-item">F<a href="PlanarSet.html#search">search</a></li><li class="nav-item">F<a href="PlanarSet.html#hit">hit</a></li><li class="nav-item">F<a href="PlanarSet.html#svg">svg</a></li><li class="nav-heading">C<a href="Errors.html">Errors</a></li><li class="nav-heading">Modules</li><li class="nav-heading">M<a href="module-BooleanOperations.html">BooleanOperations</a></li><li class="nav-item">F<a href="module-BooleanOperations.html#.unify">unify</a></li><li class="nav-item">F<a href="module-BooleanOperations.html#.subtract">subtract</a></li><li class="nav-item">F<a href="module-BooleanOperations.html#.intersect">intersect</a></li><li class="nav-item">F<a href="module-BooleanOperations.html#.innerClip">innerClip</a></li><li class="nav-item">F<a href="module-BooleanOperations.html#.outerClip">outerClip</a></li><li class="nav-item">F<a href="module-BooleanOperations.html#.calculateIntersections">calculateIntersections</a></li><li class="nav-heading">M<a href="module-RayShoot.html">RayShoot</a></li><li class="nav-item">F<a href="module-RayShoot.html#.ray_shoot">ray_shoot</a></li><li class="nav-heading">M<a href="module-Relation.html">Relation</a></li><li class="nav-item">F<a href="module-Relation.html#.equal">equal</a></li><li class="nav-item">F<a href="module-Relation.html#.intersect">intersect</a></li><li class="nav-item">F<a href="module-Relation.html#.touch">touch</a></li><li class="nav-item">F<a href="module-Relation.html#.disjoint">disjoint</a></li><li class="nav-item">F<a href="module-Relation.html#.inside">inside</a></li><li class="nav-item">F<a href="module-Relation.html#.covered">covered</a></li><li class="nav-item">F<a href="module-Relation.html#.contain">contain</a></li><li class="nav-item">F<a href="module-Relation.html#.cover">cover</a></li><li class="nav-item">F<a href="module-Relation.html#.relate">relate</a></li><li class="nav-heading"><a href="global.html">Globals</a></li><li class="nav-item">F<a href="global.html#inverse">inverse</a></li><li class="nav-item">M<a href="global.html#arc">arc</a></li><li class="nav-item">M<a href="global.html#box">box</a></li><li class="nav-item">M<a href="global.html#circle">circle</a></li><li class="nav-item">M<a href="global.html#line">line</a></li><li class="nav-item">M<a href="global.html#matrix">matrix</a></li><li class="nav-item">M<a href="global.html#multiline">multiline</a></li><li class="nav-item">M<a href="global.html#point">point</a></li><li class="nav-item">M<a href="global.html#polygon">polygon</a></li><li class="nav-item">M<a href="global.html#segment">segment</a></li><li class="nav-item">M<a href="global.html#vector">vector</a></li><li class="nav-item">M<a href="global.html#CCW">CCW</a></li><li class="nav-item">M<a href="global.html#CW">CW</a></li><li class="nav-item">M<a href="global.html#ORIENTATION">ORIENTATION</a></li><li class="nav-item">M<a href="global.html#DP_TOL">DP_TOL</a></li><li class="nav-item">F<a href="global.html#setTolerance">setTolerance</a></li><li class="nav-item">F<a href="global.html#getTolerance">getTolerance</a></li><li class="nav-item">F<a href="global.html#EQ_0">EQ_0</a></li><li class="nav-item">F<a href="global.html#EQ">EQ</a></li><li class="nav-item">F<a href="global.html#GT">GT</a></li><li class="nav-item">F<a href="global.html#GE">GE</a></li><li class="nav-item">F<a href="global.html#LT">LT</a></li><li class="nav-item">F<a href="global.html#LE">LE</a></li> </nav> <div id="main"> <h1 class="page-title">classes/circle.js</h1> <section> <article> <pre class="prettyprint source linenums"><code>/** * Created by Alex Bol on 3/6/2017. */ "use strict"; import Flatten from '../flatten'; import * as Intersection from '../algorithms/intersection'; /** * Class representing a circle * @type {Circle} */ export class Circle { /** * * @param {Point} pc - circle center point * @param {number} r - circle radius */ constructor(...args) { /** * Circle center * @type {Point} */ this.pc = new Flatten.Point(); /** * Circle radius * @type {number} */ this.r = 1; if (args.length == 1 && args[0] instanceof Object && args[0].name === "circle") { let {pc, r} = args[0]; this.pc = new Flatten.Point(pc); this.r = r; return; } else { let [pc, r] = [...args]; if (pc && pc instanceof Flatten.Point) this.pc = pc.clone(); if (r !== undefined) this.r = r; return; } throw Flatten.Errors.ILLEGAL_PARAMETERS; } /** * Return new cloned instance of circle * @returns {Circle} */ clone() { return new Flatten.Circle(this.pc.clone(), this.r); } /** * Circle center * @returns {Point} */ get center() { return this.pc; } /** * Circle bounding box * @returns {Box} */ get box() { return new Flatten.Box( this.pc.x - this.r, this.pc.y - this.r, this.pc.x + this.r, this.pc.y + this.r ); } /** * Return true if circle contains shape: no point of shape lies outside of the circle * @param {Shape} shape - test shape * @returns {boolean} */ contains(shape) { if (shape instanceof Flatten.Point) { return Flatten.Utils.LE(shape.distanceTo(this.center)[0], this.r); } if (shape instanceof Flatten.Segment) { return Flatten.Utils.LE(shape.start.distanceTo(this.center)[0], this.r) && Flatten.Utils.LE(shape.end.distanceTo(this.center)[0], this.r); } if (shape instanceof Flatten.Arc) { return this.intersect(shape).length === 0 && Flatten.Utils.LE(shape.start.distanceTo(this.center)[0], this.r) && Flatten.Utils.LE(shape.end.distanceTo(this.center)[0], this.r); } if (shape instanceof Flatten.Circle) { return this.intersect(shape).length === 0 && Flatten.Utils.LE(shape.r, this.r) && Flatten.Utils.LE(shape.center.distanceTo(this.center)[0], this.r); } /* TODO: box, polygon */ } /** * Transform circle to closed arc * @param {boolean} counterclockwise * @returns {Arc} */ toArc(counterclockwise = true) { return new Flatten.Arc(this.center, this.r, Math.PI, -Math.PI, counterclockwise); } /** * Returns array of intersection points between circle and other shape * @param {Shape} shape Shape of the one of supported types * @returns {Point[]} */ intersect(shape) { if (shape instanceof Flatten.Point) { return this.contains(shape) ? [shape] : []; } if (shape instanceof Flatten.Line) { return Intersection.intersectLine2Circle(shape, this); } if (shape instanceof Flatten.Segment) { return Intersection.intersectSegment2Circle(shape, this); } if (shape instanceof Flatten.Circle) { return Intersection.intersectCircle2Circle(shape, this); } if (shape instanceof Flatten.Box) { return Intersection.intersectCircle2Box(this, shape); } if (shape instanceof Flatten.Arc) { return Intersection.intersectArc2Circle(shape, this); } if (shape instanceof Flatten.Polygon) { return Intersection.intersectCircle2Polygon(this, shape); } } /** * Calculate distance and shortest segment from circle to shape and return 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 circle to shape * @returns {Segment} shortest segment between circle and shape (started at circle, ended at shape) */ distanceTo(shape) { if (shape instanceof Flatten.Point) { let [distance, shortest_segment] = Flatten.Distance.point2circle(shape, this); shortest_segment = shortest_segment.reverse(); return [distance, shortest_segment]; } if (shape instanceof Flatten.Circle) { let [distance, shortest_segment] = Flatten.Distance.circle2circle(this, shape); return [distance, shortest_segment]; } if (shape instanceof Flatten.Line) { let [distance, shortest_segment] = Flatten.Distance.circle2line(this, shape); return [distance, shortest_segment]; } if (shape instanceof Flatten.Segment) { let [distance, shortest_segment] = Flatten.Distance.segment2circle(shape, this); shortest_segment = shortest_segment.reverse(); return [distance, shortest_segment]; } if (shape instanceof Flatten.Arc) { let [distance, shortest_segment] = Flatten.Distance.arc2circle(shape, this); shortest_segment = shortest_segment.reverse(); return [distance, shortest_segment]; } if (shape instanceof Flatten.Polygon) { let [distance, shortest_segment] = Flatten.Distance.shape2polygon(this, shape); return [distance, shortest_segment]; } if (shape instanceof Flatten.PlanarSet) { let [dist, shortest_segment] = Flatten.Distance.shape2planarSet(this, shape); return [dist, shortest_segment]; } } /** * 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: "circle"}); } /** * Return string to draw circle in svg * @param {Object} attrs - an object with attributes of svg circle element, * like "stroke", "strokeWidth", "fill" * Defaults are stroke:"black", strokeWidth:"1", fill:"none" * @returns {string} */ svg(attrs = {}) { let {stroke, strokeWidth, fill, fillOpacity, 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<circle cx="${this.pc.x}" cy="${this.pc.y}" r="${this.r}" stroke="${stroke || "black"}" stroke-width="${strokeWidth || 1}" fill="${fill || "none"}" fill-opacity="${fillOpacity || 1.0}" ${id_str} ${class_str} />`; } }; Flatten.Circle = Circle; /** * Shortcut to create new circle * @param args */ export const circle = (...args) => new Flatten.Circle(...args); Flatten.circle = circle; </code></pre> </article> </section> </div> <footer> Generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.6.3</a> on Sun May 16 2021 15:05:05 GMT+0300 (Israel Daylight Time) using the Minami theme. </footer> <script>prettyPrint();</script> <script src="scripts/linenumber.js"></script> </body> </html>