private double CalculateDistance(int doc, IState state)
{
var document = _currentIndexReader.Document(doc, state);
if (document == null)
{
return(double.NaN);
}
var field = document.GetField(Constants.Documents.Indexing.Fields.SpatialShapeFieldName);
if (field == null)
{
return(double.NaN);
}
var shapeAsText = field.StringValue(state);
Shape shape;
try
{
shape = _spatialField.ReadShape(shapeAsText);
}
catch (InvalidOperationException)
{
return(double.NaN);
}
var pt = shape as Point;
if (pt == null)
{
pt = shape.GetCenter();
}
return(_spatialField.GetContext().GetDistCalc().Distance(pt, _originPt));
}
public SpatialDistanceFieldComparator(SpatialField spatialField, Point origin, int numHits, double roundFactor)
{
_spatialField = spatialField;
_values = new DistanceValue[numHits];
_originPt = origin;
_isGeo = _spatialField.GetContext().IsGeo();
_roundFactor = roundFactor;
}
