/// <summary>
/// Substitutes each layer input with datasource input .
/// </summary>
/// <remarks>
/// Must be done immediately before the async execution when validation was passed.
/// Layer inputs can't be accessed from background thread, since they are bound to map control.</remarks>
public static void ExtractDatasources(this IEnumerable <BaseParameter> parameters)
{
foreach (var p in parameters.OfType <LayerParameterBase>())
{
var input = p.Value as LayerInput;
if (input != null)
{
var dsInput = new DatasourceInput(input.Layer)
{
SelectedOnly = input.SelectedOnly
};
p.SetToolValue(dsInput);
input.Dispose();
}
}
}
public void TestRandomPointsVectorSelected()
{
_timer.Restart();
var fs = OpenFeatureSet(Path.Combine(UsaShapefilesPath, "cities.shp"));
// Create Vector layer:
var vector = new DatasourceInput(fs) as IVectorInput;
vector.SelectedOnly = true;
// Select first feature:
vector.Datasource.Features[0].Selected = true;
const int NumPoints = 5000;
Debug.Write(string.Format("Creating {0} random points", NumPoints));
var tool = new RandomPointsTool {
NumPoints = NumPoints, InputLayer = vector, OutputLayer = new OutputLayerInfo {
MemoryLayer = true
}
};
RunTool(tool);
Debug.Write(" ... ");
var result = tool.OutputLayer.Result as IFeatureSet;
Assert.IsNotNull(result);
// Check number of features:
Assert.AreEqual(result.NumFeatures, NumPoints);
// Check envelop:
Assert.IsTrue(vector.Datasource.GetSelectedExtents().EqualsTo(result.Envelope, 1), "The resulting envelop is not equal to the input envelop");
Debug.Write(" ..the resulting envelope is OK.. ");
result.Dispose();
Debug.WriteLine(" Done!");
Debug.WriteLine("Elapsed time " + GetDateString(_timer.ElapsedMilliseconds));
}