private Dictionary<string, string> GetParameters(MeasureParameters parameters)
{
Dictionary<string, string> dictionary = new Dictionary<string, string>();
Point2DCollection ps = new Point2DCollection();
ObservableCollection<Point2DCollection> og = new ObservableCollection<Point2DCollection>();
if (parameters.Geometry is GeoLine)
{
og = (parameters.Geometry as GeoLine).Parts;
}
else if (parameters.Geometry is GeoRegion)
{
og = (parameters.Geometry as GeoRegion).Parts;
}
else
{
dictionary.Add("point2Ds", "[]");
dictionary.Add("unit", parameters.Unit.ToString().ToUpper());
return dictionary;
}
foreach (Point2DCollection g in og)
{
for (int i = 0; i < g.Count; i++)
{
ps.Add(g[i]);
}
}
dictionary.Add("point2Ds", JsonHelper.FromPoint2DCollection(ps));
dictionary.Add("unit", parameters.Unit.ToString().ToUpper());
return dictionary;
}
/// <summary>${REST_MeasureService_method_ProcessAsync_D}</summary>
/// <param name="parameters">${REST_MeasureService_method_ProcessAsync_param_parameters}</param>
/// <param name="state">${REST_MeasureService_method_processAsync_param_state}</param>
public async Task<MeasureResult> ProcessAsync(MeasureParameters parameters)
{
if (parameters == null)
{
throw new ArgumentNullException(ExceptionStrings.ArgumentIsNull);
}
if (string.IsNullOrEmpty(this.Url))
{
throw new InvalidOperationException(ExceptionStrings.InvalidUrl);
}
if (!this.Url.EndsWith("/"))
{
this.Url += '/';
}
//将错误抛给服务器，让其返回错误结果，出发我们的Failed事件；
if (parameters.Geometry is GeoLine)
{
this.Url += "distance.json?debug=true&_method=GET&";
}
else if (parameters.Geometry is GeoRegion)
{
this.Url += "area.json?debug=true&_method=GET&";
}
else
{
this.Url += "distance.json?debug=true&_method=GET&";
}
var result = await base.SubmitRequest(base.Url, GetParameters(parameters), true);
JsonObject jsonObject = JsonObject.Parse(result);
return MeasureResult.FromJson(jsonObject);
}
private async void Measure(SuperMap.WinRT.Core.Geometry geo)
{
MeasureParameters parameters = new MeasureParameters { Geometry = geo, Unit = Unit.Kilometer };
try
{
MeasureService measureService = new MeasureService(url);
var result = await measureService.ProcessAsync(parameters);
if (result.Distance == -1)
{
await MessageBox.Show(result.Area.ToString() + "平方千米");
}
else if (result.Area == -1)
{
await MessageBox.Show(result.Distance.ToString() + "千米");
}
else
{
await MessageBox.Show("量算没有结果！");
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}