63 lines
1.6 KiB
JavaScript
63 lines
1.6 KiB
JavaScript
define(['leaflet', 'rbush', 'helper'],
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function (L, RBush, helper) {
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'use strict';
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return L.GridLayer.extend({
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mapRTree: function mapRTree(d) {
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return {
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minX: d.location.latitude, minY: d.location.longitude,
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maxX: d.location.latitude, maxY: d.location.longitude,
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node: d
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};
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},
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setData: function (data) {
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var rtreeOnlineAll = new RBush(9);
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this.data = rtreeOnlineAll.load(data.nodes.online.filter(helper.hasLocation).map(this.mapRTree));
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// pre-calculate start angles
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this.data.all().forEach(function (n) {
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n.startAngle = (parseInt(n.node.node_id.substr(10, 2), 16) / 255) * 2 * Math.PI;
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});
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this.redraw();
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},
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createTile: function (tilePoint) {
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var tile = L.DomUtil.create('canvas', 'leaflet-tile');
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var tileSize = this.options.tileSize;
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tile.width = tileSize;
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tile.height = tileSize;
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if (!this.data) {
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return tile;
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}
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var ctx = tile.getContext('2d');
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var s = tilePoint.multiplyBy(tileSize);
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var map = this._map;
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var margin = 50;
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var bbox = helper.getTileBBox(s, map, tileSize, margin);
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var nodes = this.data.search(bbox);
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if (nodes.length === 0) {
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return tile;
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}
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var startDistance = 10;
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nodes.forEach(function (d) {
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var p = map.project([d.node.location.latitude, d.node.location.longitude]);
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p.x -= s.x;
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p.y -= s.y;
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helper.positionClients(ctx, p, d.startAngle, d.node, startDistance);
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});
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return tile;
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}
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});
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});
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