Examples with SpaceFillingCurve org.neo4j.gis.spatial.index.curves.SpaceFillingCurve used on opensource projects

Example 6 with SpaceFillingCurve

use of org.neo4j.gis.spatial.index.curves.SpaceFillingCurve in project neo4j by neo4j.

the class GenericKeyStateTest method comparePointArraysMustOnlyReturnZeroForEqualArrays.

@Test
void comparePointArraysMustOnlyReturnZeroForEqualArrays() {
    PointArray firstArray = random.randomValues().nextPointArray();
    PointValue[] sourcePointValues = firstArray.asObjectCopy();
    PointArray equalArray = Values.pointArray(sourcePointValues);
    PointValue[] centerPointValues = new PointValue[sourcePointValues.length];
    for (int i = 0; i < sourcePointValues.length; i++) {
        PointValue sourcePointValue = sourcePointValues[i];
        CoordinateReferenceSystem crs = sourcePointValue.getCoordinateReferenceSystem();
        SpaceFillingCurve curve = noSpecificIndexSettings.forCrs(crs);
        Long spaceFillingCurveValue = curve.derivedValueFor(sourcePointValue.coordinate());
        centerPointValues[i] = Values.pointValue(crs, curve.centerPointFor(spaceFillingCurveValue));
    }
    PointArray centerArray = Values.pointArray(centerPointValues);
    GenericKey firstKey = newKeyState();
    firstKey.writeValue(firstArray, NEUTRAL);
    GenericKey equalKey = newKeyState();
    equalKey.writeValue(equalArray, NEUTRAL);
    GenericKey centerKey = newKeyState();
    centerKey.writeValue(centerArray, NEUTRAL);
    GenericKey noCoordsKey = newKeyState();
    noCoordsKey.writeValue(equalArray, NEUTRAL);
    GeometryType.setNoCoordinates(noCoordsKey);
    assertEquals(0, firstKey.compareValueTo(equalKey), "expected keys to be equal");
    assertEquals(firstArray.compareToSequence(centerArray, AnyValues.COMPARATOR) != 0, firstKey.compareValueTo(centerKey) != 0, "expected keys to be equal if and only if source points are equal");
    assertEquals(0, firstKey.compareValueTo(noCoordsKey), "expected keys to be equal");
}