53 lines
1.1 KiB
JavaScript
53 lines
1.1 KiB
JavaScript
var geomUtils = require('./geomUtils');
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/**
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* Constructs a gpx track.
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* @class
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* @classdesc Holds an instance of a gpx track
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* @param {object[]} segments The segments of the track
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* @param {String} name The name of the Track
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**/
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function GpxTrack(segments, name) {
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segments = segments || [];
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name = name || "";
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this.__defineGetter__("name", function() {
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return name;
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});
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this.__defineGetter__("segments", function() {
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return segments;
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});
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/**
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* Gets a segment of the track.
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**/
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this.segment = function(index) {
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return segments[index];
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};
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/**
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* Calculates the total length of all the segments within the track
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**/
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this.length = function() {
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var total = 0,
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currentSegment = null;
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for (var i=0, il= segments.length; i<il; i++) {
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currentSegment = segments[i];
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if (currentSegment.length > 1) {
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for (var j=0, jl = currentSegment.length -1; j<jl; j++) {
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total += geomUtils.calculateDistance(currentSegment[j].lat,currentSegment[j].lon,currentSegment[j+1].lat,currentSegment[j+1].lon );
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}
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}
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}
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return total;
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};
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}
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module.exports = GpxTrack;
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