//string mapParam = "mapParam={\"mapName\":{0},\"mapScales\":null,mapScale:{1},\"zoomLevel\":null,\"pixelCenter\":{\"x\":{2},\"y\":{3}},\"center\":{\"x\":{4},\"y\":{5}},\"mapCenter\":{\"x\":{6},\"y\":{7}},\"pixelRect\":{\"leftTop\":{\"x\":{8},\"y\":{9}},\"rightBottom\":{\"x\":{10},\"y\":{11}}},\"mapRect\"{\"leftBottom\":{\"x\":null,\"y\":null},\"rightTop\":{\"x\":null,\"y\":null}}}";
/// <summary>${mapping_DynamicISLayer_method_GetImageSource_D}</summary>
/// <param name="onCompleted">${mapping_DynamicISLayer_method_GetImageSource_param_onCompleted}</param>
protected override void GetImageSource(DynamicLayer.OnImageSourceCompleted onCompleted)
{
if (!IsInitialized)
{
onCompleted(null);
}
else
{
if (client != null && client.IsBusy)
{
client.CancelAsync();
client = null;
}
}
client = new WebClient();
client.DownloadStringCompleted += new DownloadStringCompletedEventHandler(client_DownloadStringCompleted);
client.DownloadProgressChanged += new DownloadProgressChangedEventHandler(client_DownloadProgressChanged);
if (this.Resolution < 0 || this.Dpi < 0)
{
return;
}
double scale = ScaleHelper.ScaleConversion(this.Resolution, this.Dpi);
Rectangle2D bounds = ViewBounds;
int width = (int)Math.Round(ViewSize.Width);
int height = (int)Math.Round(ViewSize.Height);
StringBuilder imgUrl = new StringBuilder();
imgUrl.Append(Url);
if (!Url.EndsWith("/"))
{
imgUrl.Append("/");
}
imgUrl.Append("common.ashx?method=GetMapImage");
imgUrl.AppendFormat("&map={0}", MapName);
imgUrl.AppendFormat("&layersKey={0}", LayersKey);
imgUrl.AppendFormat("&t={0}", DateTime.Now.Ticks);
imgUrl.AppendFormat("&redirect={0}", Redirect.ToString());
imgUrl.Append("&mapParam={");
imgUrl.AppendFormat("\"antiAlias\":{0},", this.AntiAliasing.ToString().ToLower());
imgUrl.AppendFormat("\"mapName\":\"{0}\",", MapName);
imgUrl.AppendFormat("\"mapScale\":{0},", scale);
imgUrl.AppendFormat("\"transparent\":{0},", Transparent.ToString().ToLower());
imgUrl.AppendFormat("\"center\":{{\"x\":{0},\"y\":{1}}},", bounds.Center.X, bounds.Center.Y);
imgUrl.AppendFormat("\"pixelRect\":{{\"leftTop\":{{\"x\":0,\"y\":0}},\"rightBottom\":{{\"x\":{0},\"y\":{1}}}", width, height);//,
imgUrl.Append("}}");
//IS.NET中增加重定向参数，此时不需要再下载返回信息了，而是直接采用重定向
//为了兼容，设置Redirect属性，当此属性为FALSE时，兼容以前的模式，当此属性为true时，采用重定向，不兼容以前的模式
if (this.Redirect)
{
BitmapImage imgSrc = new BitmapImage { UriSource = new Uri(imgUrl.ToString(), UriKind.Absolute) };
onCompleted(imgSrc);
}
else
{
client.DownloadStringAsync(new Uri(imgUrl.ToString(), UriKind.Absolute), onCompleted);
}
}
/// <summary>${mapping_HeatMapLayer_method_GetImageSource_D}</summary>
protected override void GetImageSource(DynamicLayer.OnImageSourceCompleted onCompleted)
{
if (!IsInitialized)
{
onCompleted(null);
}
else
{
if (worker != null && worker.IsBusy)
{
worker.CancelAsync();
while (worker.IsBusy)
{
Thread.Sleep(10);
}
}
}
List<ThreadSafeGradientStop> stops = new List<ThreadSafeGradientStop>();
foreach (GradientStop item in GradientStops)
{
stops.Add(new ThreadSafeGradientStop { Color = item.Color, Offset = item.Offset });
}
//stops.Sort((ThreadSafeGradientStop g1, ThreadSafeGradientStop g2) => { return g1.Offset.CompareTo(g2.Offset); });
stops.Sort((Comparison<ThreadSafeGradientStop>)((g1, g2) => g1.Offset.CompareTo(g2.Offset)));
List<PixelPoint> pps = new List<PixelPoint>(this.GradientStops.Count);
foreach (HeatPoint point in this.heatPoints)
{
if (ViewBounds.Contains(new Point2D(point.X, point.Y)) && point.Value > 0)
{
PixelPoint pp = new PixelPoint
{
X = (int)Math.Round((point.X - ViewBounds.Left) / Resolution * Intensity),
Y = (int)Math.Round((ViewBounds.Top - point.Y) / Resolution * Intensity),
Value = (int)Math.Round(point.Value),
//判断给定的地理半径是否小于0，小于0则设置成0
GeoRadius = point.GeoRadius < 0 ? 0 : point.GeoRadius,
};
pps.Add(pp);
}
}
//在视图范围内的转换为像素空间坐标
//for (int i = 0; i < heatPoints.Count; i++)
//{
// if (ViewBounds.Contains(new Point2D(heatPoints[i].X, heatPoints[i].Y)) && heatPoints[i].Value > 0)
// {
// PixelPoint point = new PixelPoint
// {
// X = (int)Math.Round((heatPoints[i].X - ViewBounds.Left) / Resolution * Intensity),
// Y = (int)Math.Round((ViewBounds.Top - heatPoints[i].Y) / Resolution * Intensity),
// Value = (int)Math.Round(heatPoints[i].Value)
// };
// pps.Add(point);
// //按照权重多加value遍；
// ////int sum = (int)Math.Round(heatPoints[i].Value);
// ////for (int k = 0; k < sum; k++)
// ////{
// //// hps.Add(point);
// ////}
// }
//}
int width = (int)Math.Round(ViewSize.Width);
int height = (int)Math.Round(ViewSize.Height);
//调用 RunWorkerAsync 方法时将引发DoWork事件。这里就是您启动耗时操作的地方
worker.RunWorkerAsync(new object[] { pps, width, height, Radius, Intensity, stops, onCompleted, this.Map.Resolution });
}
