define(["dojo/_base/declare", "esri/layers/ArcGISTiledMapServiceLayer", "esri/tasks/GeometryService", "esri/geometry/Point"], function (declare, ArcGISTiledMapServiceLayer, GeometryService, Point) {
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var clazz;
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clazz = declare("Utils", null, {
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constructor: function () {},
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createBaseMapLayer: function (layerId, layerURL, isVisible) {
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var layer = map.getLayer(layerId);
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if (!layer) {
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layer = new ArcGISTiledMapServiceLayer(layerURL, {
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id: layerId,
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visible: isVisible,
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layerType: "basemap"
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})
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}
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return layer
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},
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createGeometryService: function (layerURL) {
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var service = new GeometryService(layerURL);
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return service
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},
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lonlat2mercator: function (lonlat) {
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var mercator = {
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x: 0,
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y: 0
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};
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var x = lonlat.x * 20037508.34 / 180;
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var y = Math.log(Math.tan((90 + lonlat.y) * Math.PI / 360)) / (Math.PI / 180);
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y = y * 20037508.34 / 180;
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mercator.x = x;
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mercator.y = y;
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return mercator
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},
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mercator2lonlat: function (mercator) {
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var lonlat = {
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x: 0,
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y: 0
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};
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var x = mercator.x / 20037508.34 * 180;
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var y = mercator.y / 20037508.34 * 180;
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y = 180 / Math.PI * (2 * Math.atan(Math.exp(y * Math.PI / 180)) - Math.PI / 2);
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lonlat.x = x;
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lonlat.y = y;
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return lonlat
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},
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getDistance: function (x1, y1, x2, y2) {
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var point1 = new Point(x1, y1, map.spatialReference);
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var point2 = new Point(x2, y2, map.spatialReference);
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var dis = esri.geometry.getLength(point1, point2);
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return dis
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},
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getStringGeo: function (points) {
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var pointReg;
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pointReg = /(\d+.?\d*)\s+(\d+.?\d*)/g;
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var lineReg = /\((\s?\d+\.\d*\s+\d+\.\d*\,?)+\)/g;
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var graphicReg;
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graphicReg = /(\((((\(((\d+.?\d*)\s+(\d+.?\d*),?)+\)),?)+),?\)),?/g;
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var wkid = 4326;
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if (points.indexOf("POINT") == 0) {
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var pr = [],
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pt = [],
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prarr = [];
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if (points.indexOf("-") > -1) {
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points = points.replace("POINT (", "").replace(")", "");
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var x1 = points.split(" ")[0];
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var y1 = points.split(" ")[1];
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pr.push(parseFloat(x1));
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pr.push(parseFloat(y1));
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} else {
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var pointResult = pointReg.exec(points);
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pr.push(parseFloat(pointResult[1]));
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pr.push(parseFloat(pointResult[2]));
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}
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pt.push(pr);
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prarr.push(pt);
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return prarr;
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} else if (points.indexOf("LINESTRING") == 0 || points.indexOf("MULTILINESTRING") == 0) {
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var paths = new Array();
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var lineResult = lineReg.exec(points);
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while (lineResult != null) {
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var path = new Array();
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var pathResult = pointReg.exec(lineResult[0]);
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while (pathResult) {
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var pathPoint = new Array();
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pathPoint.push(Number(pathResult[1]));
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pathPoint.push(Number(pathResult[2]));
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path.push(pathPoint);
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pathResult = pointReg.exec(lineResult[0])
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}
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paths.push(path);
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lineResult = lineReg.exec(points)
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}
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return paths;
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} else if (points.indexOf("POLYGON") == 0 || points.indexOf("MULTIPOLYGON") == 0) {
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var rings;
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rings = new Array();
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var polygonResult = lineReg.exec(points);
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while (polygonResult != null) {
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var ring;
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ring = new Array();
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var ringResult;
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ringResult = pointReg.exec(polygonResult[0]);
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while (ringResult) {
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var ringPoint = new Array();
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ringPoint.push(Number(ringResult[1]));
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ringPoint.push(Number(ringResult[2]));
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ring.push(ringPoint);
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ringResult = pointReg.exec(polygonResult[0])
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}
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rings.push(ring);
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polygonResult = lineReg.exec(points)
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}
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return rings;
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}
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return null
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}
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});
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clazz.getInstance = function () {
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if (instance === null) {
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instance = new clazz()
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}
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return instance
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};
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return clazz
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});
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