79 lines
2 KiB
JavaScript
79 lines
2 KiB
JavaScript
/**
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* The track messages and track analysis panels share some functionality
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* which is defined in this class to prevent code duplication.
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*
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* @type {L.Class}
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*/
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BR.TrackEdges = L.Class.extend({
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/**
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* List of indexes for the track array where
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* a segment with different features ends
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*
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* @type {number[]}
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* @see BR.TrackMessages
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*/
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edges: [],
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/**
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* @param {Array} segments
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*/
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initialize: function (segments) {
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this.edges = this.getTrackEdges(segments);
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},
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/**
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* Find the indexes where a track segment ends, i.e. where the waytags change.
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*
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* Used in TrackMessages and TrackAnalysis for highlighting track segments.
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*
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* @param {Array} segments
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*
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* @return {number[]}
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*/
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getTrackEdges: function (segments) {
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var messages,
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segLatLngs,
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length,
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si,
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mi,
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latLng,
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i,
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segIndex,
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baseIndex = 0,
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edges = [];
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// track latLngs index for end node of edge
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for (si = 0; si < segments.length; si++) {
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messages = segments[si].feature.properties.messages;
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segLatLngs = segments[si].getLatLngs();
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length = segLatLngs.length;
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segIndex = 0;
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for (mi = 1; mi < messages.length; mi++) {
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latLng = this.getMessageLatLng(messages[mi]);
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for (i = segIndex; i < length; i++) {
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if (latLng.equals(segLatLngs[i])) {
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break;
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}
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}
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if (i === length) {
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i = length - 1;
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}
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segIndex = i + 1;
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edges.push(baseIndex + i);
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}
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baseIndex += length;
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}
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return edges;
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},
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getMessageLatLng: function (message) {
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var lon = message[0] / 1000000,
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lat = message[1] / 1000000;
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return L.latLng(lat, lon);
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},
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});
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