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);
}
public static string GetFormattedWorldCoordinate(this GisEditorWpfMap map, ScreenPointF screenPoint, MouseCoordinateType mouseCoordinateType)
{
PointShape lonlat = map.ToWorldCoordinate(screenPoint.X, screenPoint.Y);
double xInCurrentProjection = lonlat.X;
double yInCurrentProjection = lonlat.Y;
string projectionFullName = "Unknown";
if (map.DisplayProjectionParameters != null)
{
string projectionShortName = map.DisplayProjectionParameters.Split(' ')[0].Replace("+proj=", string.Empty);
projectionFullName = projectionAbbreviations[projectionShortName];
}
GeographyUnit mapUnit = GisEditorWpfMap.GetGeographyUnit(map.DisplayProjectionParameters);
if (projectionFullName == "Unknown" && mapUnit == GeographyUnit.Unknown)
{
return(String.Format("X:{0}, Y:{1}", lonlat.X.ToString("N4", CultureInfo.InvariantCulture), lonlat.Y.ToString("N4", CultureInfo.InvariantCulture)));
}
else
{
if (mapUnit != GeographyUnit.DecimalDegree)
{
try
{
Proj4Projection proj = new Proj4Projection();
proj.InternalProjectionParametersString = map.DisplayProjectionParameters;
proj.ExternalProjectionParametersString = Proj4Projection.GetDecimalDegreesParametersString();
proj.Open();
lonlat = proj.ConvertToExternalProjection(lonlat) as PointShape;
proj.Close();
}
catch
{
lonlat = new PointShape();
}
}
return(GetMouseCoordinates(lonlat.X, lonlat.Y, mouseCoordinateType, map.DisplayProjectionParameters, xInCurrentProjection, yInCurrentProjection));
}
}
public static ContentPresenter GetMapBasicInformation(this GisEditorWpfMap map)
{
string projectionFullName = "Unknown";
GeographyUnit mapUnit = GeographyUnit.Unknown;
if (map.DisplayProjectionParameters != null)
{
string projectionShortName = map.DisplayProjectionParameters.Split(' ')[0].Replace("+proj=", string.Empty);
projectionFullName = projectionAbbreviations[projectionShortName];
mapUnit = GisEditorWpfMap.GetGeographyUnit(map.DisplayProjectionParameters);
}
double scaleValue = map.CurrentScale;
int zoomLevel = map.GetSnappedZoomLevelIndex(scaleValue) + 1;
bool isPreciseZoomLevel = map.ZoomLevelSet.GetZoomLevels()[zoomLevel - 1] is PreciseZoomLevel;
TextBlock projectionTextBlock = new TextBlock();
projectionTextBlock.SetResourceReference(TextBlock.TextProperty, "MapExtensionProjectionText");
TextBlock projectionValueTextBlock = new TextBlock();
projectionValueTextBlock.Text = string.Format(" {0} | ", projectionFullName);
TextBlock mapUnitTextBlock = new TextBlock();
mapUnitTextBlock.SetResourceReference(TextBlock.TextProperty, "MapExtensionMapUnitText");
TextBlock mapUnitValueTextBlock = new TextBlock();
mapUnitValueTextBlock.Text = string.Format(" {0} | ", mapUnit);
TextBlock zoomLevelTextBlock = new TextBlock();
zoomLevelTextBlock.SetResourceReference(TextBlock.TextProperty, "MapExtensionZoomLevelText");
TextBlock zoomLevelValueTextBlock = new TextBlock();
if (isPreciseZoomLevel)
{
zoomLevelValueTextBlock.Text = string.Format(" Temporary Zoom Level | ");
}
else
{
zoomLevelValueTextBlock.Text = string.Format(" {0:D2} | ", zoomLevel);
}
TextBlock scaleTextBlock = new TextBlock();
scaleTextBlock.SetResourceReference(TextBlock.TextProperty, "MapExtensionScaleText");
TextBlock scaleValueTextBlock = new TextBlock();
scaleValueTextBlock.Text = string.Format(" 1:{0:N0}", scaleValue);
StackPanel mapInformationStackPanel = new StackPanel();
mapInformationStackPanel.Orientation = Orientation.Horizontal;
mapInformationStackPanel.Children.Add(projectionTextBlock);
mapInformationStackPanel.Children.Add(projectionValueTextBlock);
mapInformationStackPanel.Children.Add(mapUnitTextBlock);
mapInformationStackPanel.Children.Add(mapUnitValueTextBlock);
mapInformationStackPanel.Children.Add(zoomLevelTextBlock);
mapInformationStackPanel.Children.Add(zoomLevelValueTextBlock);
mapInformationStackPanel.Children.Add(scaleTextBlock);
mapInformationStackPanel.Children.Add(scaleValueTextBlock);
ContentPresenter contentPresenter = new ContentPresenter();
contentPresenter.Content = mapInformationStackPanel;
return(contentPresenter);
}