DevCrew.SuperCluster 1.0.1

SuperCluster-CSharp

A C# library that provides an efficient way to cluster large point datasets. This library is based on the popular SuperCluster JavaScript library by Mapbox and has been optimized for performance in .NET environments. It helps to implement clustering feature in Unity3d WebGL and in any .NET framework.

Installation

Install using NuGet

We'll soon publish our library to NuGet Packages Gallery and then you can search for DevCrew.SuperCluster or SuperCluster on NuGet package manager in Visual Studio and add it to your project.

Install as open source

The second option is to add SuperCluster as an open source module to your .NET or Unity project if you don't use NuGet.

• Clone the repo https://github.com/DevCrew-io/SuperCluster-CSharp.git
• Make sure to checkout main branch
• Copy the DevCrew.SuperCluster folder and remove DevCrew.SuperCluster.csproj file
• Now Paste the whole DevCrew.SuperCluster package into your project and you are ready to use

Usage

GeoPoint

Map your data set into list of GeoPoint

private readonly List<GeoPoint> _points = new List<GeoPoint>();

//here we have added some dummy geo coordinates 
_points.Add(new GeoPoint(longitude: -112.8384399, latitude: 49.696595));
_points.Add(new GeoPoint(longitude: -112.838563, latitude: 49.694496));
_points.Add(new GeoPoint(longitude: -112.8412346, latitude: 49.696189));

Options

Create a new object of SuperCluster with clustering options

//superCluster with default clustering options
private readonly SuperCluster _superCluster = new(options: SuperCluster.DefaultOptions);

//or you can provide your own clustering options like this:
Options customOptions = new(
    minZoom: 0,
    maxZoom: 16,
    minPoints: 2,
    radius: 30,
    extent: 512,
    nodeSize: 64,
    log: true,
    generateId: false
);

Methods

Load(points)

Once we have create a super cluster object then we can cluster our points using Load() method. It creates all possible clusters for different zoom levels at once.

//This method should be called only once 
_superCluster.Load(points: _points);

GetClusters(bbox, zoom)

For the given bbox array [westLng, southLat, eastLng, northLat] and integer zoom, returns an array of clusters and points.

var bbox = new double[] { -180, -85, 180, 85 };
//This method should be called on zoom in and zoom out events.
var clusterData = _superCluster.GetClusters(bbox: bbox, zoom: 16);

Console.WriteLine("clusterData.count: " + clusterData.Count);

//print clustered data
foreach (var output in clusterData.Select(JsonConvert.SerializeObject))
{
    Console.WriteLine(output);
}   

//you can filter between clusters and individual points from clusterData output like this
foreach (var geoJsonFeature in clusterData)
{
    if (geoJsonFeature is GeoPoint)
    {
        //This is single geo point
    }
    else
    {
        //This is a cluster
    }
}

Authors

DevCrew.IO

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Contributing

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Copyright & License

Code copyright 2023–2024 DevCrew I/O. Code released under the MIT license.