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Merge pull request #298 from Schwanksta/patch-1

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Add ability to use a function for maxClusterRadius
This commit is contained in:
Dave Leaver
2014-01-19 13:32:32 -08:00
parent 683bf4c341 f7de94b053
commit 2b224523d3
2 changed files with 17 additions and 8 deletions
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README.md
+2 -2
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@@ -61,7 +61,7 @@ Enabled by default (boolean options):
Other options
* **animateAddingMarkers**: If set to true then adding individual markers to the MarkerClusterGroup after it has been added to the map will add the marker and animate it in to the cluster. Defaults to false as this gives better performance when bulk adding markers. addLayers does not support this, only addLayer with individual Markers.
* **disableClusteringAtZoom**: If set, at this zoom level and below markers will not be clustered. This defaults to disabled. [See Example](http://leaflet.github.com/Leaflet.markercluster/example/marker-clustering-realworld-maxzoom.388.html)
* **maxClusterRadius**: The maximum radius that a cluster will cover from the central marker (in pixels). Default 80. Decreasing will make more smaller clusters.
* **maxClusterRadius**: The maximum radius that a cluster will cover from the central marker (in pixels). Default 80. Decreasing will make more smaller clusters. You can also use a function that accepts the current map zoom and returns the maximum cluster radius in pixels.
* **polygonOptions**: Options to pass when creating the L.Polygon(points, options) to show the bounds of a cluster
* **singleMarkerMode**: If set to true, overrides the icon for all added markers to make them appear as a 1 size cluster
* **spiderfyDistanceMultiplier**: Increase from 1 to increase the distance away from the center that spiderfied markers are placed. Use if you are using big marker icons (Default:1)
@@ -138,4 +138,4 @@ Performance optimizations could be done so these are handled more gracefully (Ru
Leaflet.markercluster is free software, and may be redistributed under the MIT-LICENSE.
[![Build Status](https://travis-ci.org/Leaflet/Leaflet.markercluster.png?branch=master)](https://travis-ci.org/Leaflet/Leaflet.markercluster)
[![Build Status](https://travis-ci.org/Leaflet/Leaflet.markercluster.png?branch=master)](https://travis-ci.org/Leaflet/Leaflet.markercluster)
src/MarkerClusterGroup.js
+15 -6
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@@ -1,4 +1,3 @@
/*
* L.MarkerClusterGroup extends L.FeatureGroup by clustering the markers contained within
*/
@@ -695,8 +694,18 @@ L.MarkerClusterGroup = L.FeatureGroup.extend({
},
_generateInitialClusters: function () {
var maxZoom = this._map.getMaxZoom(),
radius = this.options.maxClusterRadius;
var maxZoom = this._map.getMaxZoom(),
radius = this.options.maxClusterRadius,
radiusFunction = null;
//If we just set maxClusterRadius to a single number, we need to create
//a simple function to return that number. Otherwise, we just have to
//use the function we've passed in.
if (typeof radius === "number") {
radiusFunction = function () { return radius; };
} else if (typeof radius === "function") {
radiusFunction = radius;
}
if (this.options.disableClusteringAtZoom) {
maxZoom = this.options.disableClusteringAtZoom - 1;
@@ -704,11 +713,11 @@ L.MarkerClusterGroup = L.FeatureGroup.extend({
this._maxZoom = maxZoom;
this._gridClusters = {};
this._gridUnclustered = {};
//Set up DistanceGrids for each zoom
for (var zoom = maxZoom; zoom >= 0; zoom--) {
this._gridClusters[zoom] = new L.DistanceGrid(radius);
this._gridUnclustered[zoom] = new L.DistanceGrid(radius);
this._gridClusters[zoom] = new L.DistanceGrid(radiusFunction(zoom));
this._gridUnclustered[zoom] = new L.DistanceGrid(radiusFunction(zoom));
}
this._topClusterLevel = new L.MarkerCluster(this, -1);