public static Pair <PointValue, PointValue> PointsWithSameValueOnSpaceFillingCurve(Config config)
{
ConfiguredSpaceFillingCurveSettingsCache configuredCache = new ConfiguredSpaceFillingCurveSettingsCache(config);
SpaceFillingCurveSettings spaceFillingCurveSettings = configuredCache.ForCRS(CoordinateReferenceSystem.WGS84);
SpaceFillingCurve curve = spaceFillingCurveSettings.Curve();
double[] origin = new double[] { 0.0, 0.0 };
long? spaceFillingCurveMapForOrigin = curve.DerivedValueFor(origin);
double[] centerPointForOriginTile = curve.CenterPointFor(spaceFillingCurveMapForOrigin.Value);
PointValue originValue = Values.pointValue(CoordinateReferenceSystem.WGS84, origin);
PointValue centerPointValue = Values.pointValue(CoordinateReferenceSystem.WGS84, centerPointForOriginTile);
assertThat("need non equal points for this test", origin, not(equalTo(centerPointValue)));
return(Pair.of(originValue, centerPointValue));
}
public virtual SpaceFillingCurve ForCrs(CoordinateReferenceSystem crs, bool assignToIndexIfNotYetAssigned)
{
// Index-specific
SpaceFillingCurveSettings specificSetting = _specificIndexConfigCache.get(crs);
if (specificSetting != null)
{
return(specificSetting.Curve());
}
// Global config
SpaceFillingCurveSettings configuredSetting = _globalConfigCache.forCRS(crs);
if (assignToIndexIfNotYetAssigned)
{
_specificIndexConfigCache.put(crs, configuredSetting);
}
return(configuredSetting.Curve());
}