/// <summary>
/// Locates point route location with the specified route identifier.
/// </summary>
/// <param name="routeId">The route identifier.</param>
/// <param name="point">The point.</param>
/// <param name="error">The error that occured during location.</param>
/// <returns>
/// Returns a <see cref="IGeometry" /> representing the location.
/// </returns>
public IGeometry Locate(object routeId, IPoint point, out esriLocatingError error)
{
IRouteLocation routeLocation = new RouteMeasurePointLocationClass();
routeLocation.RouteID = routeId;
IRouteMeasurePointLocation location = (IRouteMeasurePointLocation)routeLocation;
location.Measure = point.M;
IGeometry result;
this.Locator.Locate(routeLocation, out result, out error);
return(result.IsEmpty ? null : result);
}
/// <summary>
/// Handler operation Point Location
/// </summary>
/// <param name="boundVariables">list of variables bound</param>
/// <param name="operationInput">input of operation</param>
/// <param name="outputFormat">format of output</param>
/// <param name="requestProperties">list of request properties</param>
/// <param name="responseProperties">list of response properties </param>
/// <returns>response in byte</returns>
private byte[] PointLocationOperHandler(NameValueCollection boundVariables, JsonObject operationInput, string outputFormat, string requestProperties, out string responseProperties)
{
responseProperties = "{\"Content-Type\" : \"application/json\"}";
int routeLayerID = Convert.ToInt32(boundVariables["RouteLayersID"], CultureInfo.InvariantCulture);
esriUnits routeMeasureUnit = DSUtility.GetMeasureUnit(operationInput, MeasureUnit.routeMeasureUnit);
esriUnits routeLocationMeasureUnit = DSUtility.GetMeasureUnit(operationInput, MeasureUnit.routeLocationMeasureUnit);
double?measure;
bool found = operationInput.TryGetAsDouble("measure", out measure);
if (!found || !measure.HasValue)
{
throw new DynamicSegmentationException("measure not valid");
}
double?lateralOffset;
found = operationInput.TryGetAsDouble("lateralOffset", out lateralOffset);
if (!found || !lateralOffset.HasValue)
{
lateralOffset = 0;
}
IFeatureClass featureClass = this.GetRouteFeatureClass(routeLayerID);
string routeIDFieldNameValue = DSUtility.GetRouteIDFieldName(operationInput);
IFields fields = featureClass.Fields;
int indexField = fields.FindField(routeIDFieldNameValue);
if (indexField == -1)
{
throw new DynamicSegmentationException(string.Format(CultureInfo.InvariantCulture, "routeIDFieldName {0} not found!", routeIDFieldNameValue));
}
object routeID;
found = operationInput.TryGetObject("routeID", out routeID);
if (!found)
{
throw new DynamicSegmentationException("routeID not valid");
}
IField field = fields.get_Field(indexField);
this.CheckRouteID(routeID, field);
IRouteLocator2 routeLocator = DSUtility.GetRouteLocator(featureClass, routeIDFieldNameValue, routeMeasureUnit);
IRouteLocation routeLocation = new RouteMeasurePointLocationClass();
routeLocation.RouteID = routeID;
routeLocation.MeasureUnit = routeLocationMeasureUnit;
routeLocation.LateralOffset = lateralOffset.Value;
IRouteMeasurePointLocation routeMeasurePointLocation = (IRouteMeasurePointLocation)routeLocation;
routeMeasurePointLocation.Measure = measure.Value;
IGeometry geometry;
esriLocatingError locatingError;
routeLocator.Locate(routeLocation, out geometry, out locatingError);
int errorId = (int)locatingError;
JsonObject result = null;
if (errorId != 0)
{
string errorDescription = string.Format(CultureInfo.InvariantCulture, "{0} ({1})", Enum.GetName(typeof(esriLocatingError), locatingError), errorId);
IObjectJson jsonObjectError = new ObjectError(errorDescription);
result = jsonObjectError.ToJsonObject();
}
if ((geometry != null) && (!geometry.IsEmpty))
{
if (result == null)
{
result = new JsonObject();
}
result.AddJsonObject("geometries", Conversion.ToJsonObject(geometry));
}
return(result.JsonByte());
}
