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comparison src/djol/DistanceMeasureTool.js @ 8:f0035923ff3e

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добавлена библиотека для работы с openlayers 3+
author cin
date Mon, 21 Aug 2017 17:47:00 +0300
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7:9c0943c68a90 8:f0035923ff3e
1 define([
2 "dojo/_base/declare",
3 "implab/safe",
4 "./MeasureToolBase",
5 "implab/text/format",
6 "dojo/i18n!./format/nls/units",
7 "ol" ],
8
9 function(declare, safe, MeasureToolBase, format, units, ol) {
10 return declare([ MeasureToolBase ], {
11
12 isGeodesic : true,
13
14 units : 'metric',
15
16 constructor : function(opts) {
17 if (opts)
18 safe.mixin(this,opts,["isGeodesic", "units"]);
19 },
20
21 _createDraw : function(source) {
22 return new ol.interaction.Draw(
23 {
24 source : source,
25 type : "LineString",
26 style : this.drawStyle
27 });
28 },
29
30 _formatTooltip : function(sketch, proj) {
31 var length = 0;
32 if (this.isGeodesic) {
33 var points = sketch.getGeometry().getCoordinates();
34 var t = ol.proj.getTransform(proj, "EPSG:4326");
35 for (var i = 0; i < points.length - 1; i++) {
36 length += this.wgs84Sphere.haversineDistance(
37 t(points[i]),
38 t(points[i + 1]));
39 }
40 } else {
41 length = sketch.getGeometry().getLength();
42 }
43
44 var mpu, unitName;
45 switch (this.units) {
46 case "nautical":
47 mpu = 1852;
48 unitName = units.nmiles;
49 break;
50 default:
51 mpu = 1000;
52 unitName = units.kilometers;
53 }
54
55 if (length >= mpu) {
56 return format("{0:#.0#}{1}", length / mpu, unitName);
57 } else {
58 return format("{0:#0.0#}{1}", length, units.meters);
59 }
60 }
61
62 });
63 });