private Feature FindFeatureByPoint(double x, double y)
{
Feature result = null;
IEnumerable <FeatureLayer> allFeatureLayers = null;
string currentProj4 = String.Empty;
if (ParentMap != null)
{
allFeatureLayers = ParentMap.GetFeatureLayers(true).Reverse();
currentProj4 = ParentMap.DisplayProjectionParameters;
}
else
{
allFeatureLayers = new Collection <FeatureLayer>();
}
GeographyUnit currentUnit = GeographyUnit.DecimalDegree;
if (!string.IsNullOrEmpty(currentProj4))
{
currentUnit = GisEditorWpfMap.GetGeographyUnit(currentProj4);
}
foreach (var featureLayer in allFeatureLayers)
{
Collection <Feature> featuresInDistance = null;
featureLayer.SafeProcess(() =>
{
featuresInDistance = AscendingSearch(x, y, currentUnit, featureLayer, 1, 20);
});
//featureLayer.Open();
//var featuresInDistance = AscendingSearch(x, y, currentUnit, featureLayer, 1, 20);
//featureLayer.Close();
if (featuresInDistance != null && featuresInDistance.Count > 0)
{
if (featuresInDistance.Count > 1)
{
result = featuresInDistance[0];
for (int i = 0; i < featuresInDistance.Count - 1; i++)
{
result = result.GetIntersection(featuresInDistance[i + 1]);
}
}
else
{
result = featuresInDistance[0];
}
result.Tag = Convert.ToBase64String(result.GetWellKnownBinary());
break;
}
}
return(result);
}
