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fix Circle in flat projections

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Vladimir Agafonkin 2014-01-03 18:08:19 +02:00
parent 8f4baaed14
commit ae8bc579a4
1 changed files with 20 additions and 15 deletions
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27
src/layer/vector/Circle.js
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@ -32,26 +32,31 @@ L.Circle = L.CircleMarker.extend({
_project: function () {
var rad = Math.PI / 180,
lng = this._latlng.lng,
var lng = this._latlng.lng,
lat = this._latlng.lat,
map = this._map,
crs = map.options.crs;
latR = (this._mRadius / L.CRS.Earth.R) / rad,
if (crs.distance === L.CRS.Earth.distance) {
var d = Math.PI / 180,
latR = (this._mRadius / L.CRS.Earth.R) / d,
top = map.project([lat + latR, lng]),
bottom = map.project([lat - latR, lng]),
p = top.add(bottom).divideBy(2),
lat2 = map.unproject(p).lat,
lngR = Math.acos((Math.cos(latR * rad) - Math.sin(lat * rad) * Math.sin(lat2 * rad)) /
(Math.cos(lat * rad) * Math.cos(lat2 * rad))) / rad || 0,
left = map.project([lat2, lng - lngR]),
r = p.x - left.x,
ry = p.y - top.y;
lngR = Math.acos((Math.cos(latR * d) - Math.sin(lat * d) * Math.sin(lat2 * d)) /
(Math.cos(lat * d) * Math.cos(lat2 * d))) / d;
this._point = p.subtract(map.getPixelOrigin());
this._radius = r ? Math.max(Math.round(r), 1) : 0;
this._radiusY = Math.max(Math.round(ry), 1);
this._radius = isNaN(lngR) ? 0 : Math.max(Math.round(p.x - map.project([lat2, lng - lngR]).x), 1);
this._radiusY = Math.max(Math.round(p.y - top.y), 1);
} else {
var latlng2 = crs.unproject(crs.project(this._latlng).subtract([this._mRadius, 0]));
this._point = map.latLngToLayerPoint(this._latlng);
this._radius = this._point.x - map.latLngToLayerPoint(latlng2).x;
}
this._updateBounds();
}