/// <summary>
/// Create a distance query using
/// a boundary box wrapper around a more precise
/// DistanceFilter.
/// </summary>
/// <param name="lat">The lat.</param>
/// <param name="lng">The Lng.</param>
/// <param name="miles">The miles.</param>
/// <param name="latField">The lat field.</param>
/// <param name="lngField">The Lng field.</param>
/// <param name="tierFieldPrefix">The tier field prefix.</param>
/// <param name="needPrecise">if set to <c>true</c> [need precise].</param>
public DistanceQueryBuilder(double lat, double lng, double miles, string latField, string lngField, string tierFieldPrefix, bool needPrecise)
{
Lat = lat;
Lng = lng;
Miles = miles;
var cpf = new CartesianPolyFilterBuilder(tierFieldPrefix);
Filter cartesianFilter = cpf.GetBoundingArea(lat, lng, miles);
/* create precise distance filter */
if (needPrecise)
{
_filter = DistanceFilter = new LatLongDistanceFilter(cartesianFilter, miles, lat, lng, latField, lngField);
}
else
{
_filter = cartesianFilter;
DistanceFilter = null;
}
}
/// <summary>
/// Create a distance query using
/// a boundary box wrapper around a more precise
/// DistanceFilter.
/// </summary>
/// <param name="lat">The lat.</param>
/// <param name="lng">The Lng.</param>
/// <param name="miles">The miles.</param>
/// <param name="geoHashFieldPrefix">The geo hash field prefix.</param>
/// <param name="tierFieldPrefix">The tier field prefix.</param>
/// <param name="needPrecise">if set to <c>true</c> [need precise].</param>
public DistanceQueryBuilder(double lat, double lng, double miles, string geoHashFieldPrefix, String tierFieldPrefix, bool needPrecise)
{
Lat = lat;
Lng = lng;
Miles = miles;
var cpf = new CartesianPolyFilterBuilder(tierFieldPrefix);
Filter cartesianFilter = cpf.GetBoundingArea(lat, lng, miles);
/* create precise distance filter */
if (needPrecise)
{
_filter = DistanceFilter = new GeoHashDistanceFilter(cartesianFilter, lat, lng, miles, geoHashFieldPrefix);
}
else
{
_filter = cartesianFilter;
DistanceFilter = null;
}
}