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