_waypointsVisible: function() {
var wps = this.getWaypoints(),
mapSize,
bounds,
boundsSize,
i,
p;
try {
mapSize = this._map.getSize();
for (i = 0; i < wps.length; i++) {
p = this._map.latLngToLayerPoint(wps[i].latLng);
if (bounds) {
bounds.extend(p);
} else {
bounds = L.bounds([p]);
}
}
boundsSize = bounds.getSize();
return (boundsSize.x > mapSize.x / 5 ||
boundsSize.y > mapSize.y / 5) && this._waypointsInViewport();
} catch (e) {
return false;
}
},
_getCellNumBounds: function () {
var worldBounds = this._map.getPixelWorldBounds();
var size = this._getCellSize();
return worldBounds ? bounds(
worldBounds.min.divideBy(size).floor(),
worldBounds.max.divideBy(size).ceil().subtract([1, 1])) : null;
}
render() {
let { width, height } = getComputedStyle(this.dom);
let map = null;
// 百度地图
if(this.mapType == 'baidu') {
let crs = new L.Proj.CRS('EPSG:3395',
'+proj=merc +lon_0=0 +k=1 +x_0=0 +y_0=0 +datum=WGS84 +units=m +no_defs',
{
resolutions: function () {
let level = 19
let res = [];
res[0] = Math.pow(2, 18);
for(let i = 1; i < level; i++) {
res[i] = Math.pow(2, (18 - i));
}
return res;
}(),
origin: [0, 0],
bounds: L.bounds([0, 20037508.342789244], [20037508.342789244, 0])
});
map = L.map(this.dom, {
renderer: 'canvas',
minZoom: 2,
crs: crs
}).setView([39.91349, 116.407945], 3);
L.tileLayer(this.tileLayer, {
attribution: '© 百度地图',
maxZoom: 18,
minZoom: 3,
subdomains: '1234',
tms: true
}).addTo(map);
}
else {
map = L.map(this.dom, {
renderer: 'canvas',
minZoom: 2,
}).setView([39.91349, 116.407945], 3);
L.tileLayer(this.tileLayer, {
maxZoom: 18,
minZoom: 3,
}).addTo(map);
}
map.invalidateSize(true);
return map;
}
_calculateBbox: function () {
var pixelBounds = this._map.getPixelBounds();
var sw = this._map.unproject(pixelBounds.getBottomLeft());
var ne = this._map.unproject(pixelBounds.getTopRight());
var neProjected = this._map.options.crs.project(ne);
var swProjected = this._map.options.crs.project(sw);
// this ensures ne/sw are switched in polar maps where north/top bottom/south is inverted
var boundsProjected = bounds(neProjected, swProjected);
return [boundsProjected.getBottomLeft().x, boundsProjected.getBottomLeft().y, boundsProjected.getTopRight().x, boundsProjected.getTopRight().y].join(',');
},
_update: function () {
if (!this._map) {
return;
}
var mapBounds = this._map.getPixelBounds();
var cellSize = this._getCellSize();
// cell coordinates range for the current view
var cellBounds = bounds(
mapBounds.min.divideBy(cellSize).floor(),
mapBounds.max.divideBy(cellSize).floor());
this._removeOtherCells(cellBounds);
this._addCells(cellBounds);
this.fire('cellsupdated');
},