/// <summary>${WP_mapping_HeatMapLayer_constructor_None_D}</summary>
public HeatMapLayer()
{
heatPoints = new HeatPointCollection();
heatPoints.CollectionChanged += new NotifyCollectionChangedEventHandler(heatPoints_CollectionChanged);
fullBounds = Rectangle2D.Empty;
//设置GradientStops的默认值
GradientStopCollection stops = new GradientStopCollection();
stops.Add(new GradientStop() { Color = Color.FromArgb(0, 0, 0, 0), Offset = 0 });
stops.Add(new GradientStop() { Color = new Color() { A = 0xff, R = 0xff, G = 0x42, B = 0x00 }, Offset = 0.75 });
stops.Add(new GradientStop() { Color = new Color() { A = 0xff, R = 0xff, G = 0xff, B = 0x00 }, Offset = .5 });
stops.Add(new GradientStop() { Color = new Color() { A = 0xff, R = 0x1a, G = 0xa4, B = 0x03 }, Offset = .25 });
GradientStops = stops;
//初始化后台线程
worker = new BackgroundWorker { WorkerReportsProgress = true, WorkerSupportsCancellation = true };
worker.ProgressChanged += new ProgressChangedEventHandler(worker_ProgressChanged);
worker.RunWorkerCompleted += new RunWorkerCompletedEventHandler(worker_RunWorkerCompleted);
worker.DoWork += new DoWorkEventHandler(worker_DoWork);
}
//将查询结果加入HeatMapLayer图层中
private void service_ProcessCompleted(object sender, QueryEventArgs e)
{
if (e.Result == null)
{
return;
}
hpCollection = new HeatPointCollection();
hpCollectionGeoRadius = new HeatPointCollection();
if (e.Result.Recordsets != null)
{
foreach (Recordset item in e.Result.Recordsets)
{
foreach (var item1 in item.Features)
{
HeatPoint heatPoint = new HeatPoint()
{
X = item1.Geometry.Bounds.Center.X,
Y = item1.Geometry.Bounds.Center.Y,
Value = 10,
};
HeatPoint heatPointGeoRadius = new HeatPoint()
{
X = item1.Geometry.Bounds.Center.X,
Y = item1.Geometry.Bounds.Center.Y,
Value = 10,
GeoRadius = 3
};
hpCollectionGeoRadius.Add(heatPointGeoRadius);
hpCollection.Add(heatPoint);
}
}
}
layer.HeatPoints = hpCollection;
layer.Radius = (int)sliderRadius.Value;
layer.Intensity = sliderIntensity.Value;
}