/// <summary>
/// Determines the area and length details for the specified features
/// </summary>
private void DetermineAreaAndLengthDetailsFor(IList <Feature> features, out string areaString, out string lengthString)
{
var length = 0.0;
var area = 0.0;
foreach (var feature in features)
{
foreach (FeatureGeometryFieldDescriptor field in feature.TableDescriptor.FieldDescriptors.Descriptors(FeatureFieldDescriptorType.Geometry))
{
var geometry = feature[field.Name];
if (geometry != null)
{
switch (field.FieldType.PhysicalType)
{
case FeaturePhysicalFieldType.Curve:
case FeaturePhysicalFieldType.MultiCurve:
ICurveGeometry curveGeometry = geometry as ICurveGeometry;
length += curveGeometry.LineLength(LinearLineLengthType.Meter);
break;
case FeaturePhysicalFieldType.Polygon:
case FeaturePhysicalFieldType.MultiPolygon:
IPolygonGeometry polygonGeometry = geometry as IPolygonGeometry;
area += polygonGeometry.Area(SurfaceAreaType.MeterSquared);
break;
}
}
}
}
// Interpret the area in m2, but let the unitSystem determine the actual locale's settings
areaString = UnitSystem.Convert(area, "m2").ToString();
// Interpret the length in m, but let the unitSystem determine the display units
lengthString = UnitSystem.Convert(length, "m").ToString();
}
/// <summary>
/// Transforms the area to a human readable string, making use of the active unit system
/// </summary>
protected static String AreaInMetersToString(double area)
{
return(UnitSystem.Convert(area, "m2").ToString());
}
/// <summary>
/// Transforms the length to a human readable string, making use of the active unit system
/// </summary>
protected static String LengthInMetersToString(double length)
{
return(UnitSystem.Convert(length, "m").ToString());
}
/// <summary>
/// Raises that the area to be displayed has changed. Interprets the specified
/// area as an area in m2.
/// </summary>
protected void RaiseAreaChanged(double area)
{
RaiseAreaChanged(UnitSystem.Convert(area, "m2").ToString());
}