package mil.nga.giat.geowave.index.sfc.hilbert;
import java.nio.ByteBuffer;
import mil.nga.giat.geowave.index.dimension.LatitudeDefinition;
import mil.nga.giat.geowave.index.dimension.LongitudeDefinition;
import mil.nga.giat.geowave.index.sfc.RangeDecomposition;
import mil.nga.giat.geowave.index.sfc.SFCDimensionDefinition;
import mil.nga.giat.geowave.index.sfc.SFCFactory;
import mil.nga.giat.geowave.index.sfc.SFCFactory.SFCType;
import mil.nga.giat.geowave.index.sfc.SpaceFillingCurve;
import mil.nga.giat.geowave.index.sfc.data.BasicNumericDataset;
import mil.nga.giat.geowave.index.sfc.data.NumericData;
import mil.nga.giat.geowave.index.sfc.data.NumericRange;
import org.junit.Assert;
import org.junit.Test;
import com.google.common.primitives.SignedBytes;
public class HilbertSFCTest
{
@Test
public void testGetId_2DSpatialMaxValue()
throws Exception {
int LATITUDE_BITS = 31;
int LONGITUDE_BITS = 31;
double[] testValues = new double[] {
90,
180
};
long expectedID = 3074457345618258602L;
SFCDimensionDefinition[] SPATIAL_DIMENSIONS = new SFCDimensionDefinition[] {
new SFCDimensionDefinition(
new LatitudeDefinition(),
LATITUDE_BITS),
new SFCDimensionDefinition(
new LongitudeDefinition(),
LONGITUDE_BITS)
};
SpaceFillingCurve hilbertSFC = SFCFactory.createSpaceFillingCurve(
SPATIAL_DIMENSIONS,
SFCType.HILBERT);
Assert.assertEquals(
expectedID,
ByteBuffer.wrap(
hilbertSFC.getId(testValues)).getLong());
}
@Test
public void testGetId_2DSpatialMinValue()
throws Exception {
int LATITUDE_BITS = 31;
int LONGITUDE_BITS = 31;
double[] testValues = new double[] {
-90,
-180
};
long expectedID = 0L;
SFCDimensionDefinition[] SPATIAL_DIMENSIONS = new SFCDimensionDefinition[] {
new SFCDimensionDefinition(
new LatitudeDefinition(),
LATITUDE_BITS),
new SFCDimensionDefinition(
new LongitudeDefinition(),
LONGITUDE_BITS)
};
SpaceFillingCurve hilbertSFC = SFCFactory.createSpaceFillingCurve(
SPATIAL_DIMENSIONS,
SFCType.HILBERT);
Assert.assertEquals(
expectedID,
ByteBuffer.wrap(
hilbertSFC.getId(testValues)).getLong());
}
@Test
public void testGetId_2DSpatialCentroidValue()
throws Exception {
int LATITUDE_BITS = 31;
int LONGITUDE_BITS = 31;
double[] testValues = new double[] {
0,
0
};
long expectedID = 768614336404564650L;
SFCDimensionDefinition[] SPATIAL_DIMENSIONS = new SFCDimensionDefinition[] {
new SFCDimensionDefinition(
new LatitudeDefinition(),
LATITUDE_BITS),
new SFCDimensionDefinition(
new LongitudeDefinition(),
LONGITUDE_BITS)
};
SpaceFillingCurve hilbertSFC = SFCFactory.createSpaceFillingCurve(
SPATIAL_DIMENSIONS,
SFCType.HILBERT);
Assert.assertEquals(
expectedID,
ByteBuffer.wrap(
hilbertSFC.getId(testValues)).getLong());
}
@Test
public void testGetId_2DSpatialLexicographicOrdering()
throws Exception {
int LATITUDE_BITS = 31;
int LONGITUDE_BITS = 31;
double[] minValue = new double[] {
-90,
-180
};
double[] maxValue = new double[] {
90,
180
};
SFCDimensionDefinition[] SPATIAL_DIMENSIONS = new SFCDimensionDefinition[] {
new SFCDimensionDefinition(
new LatitudeDefinition(),
LATITUDE_BITS),
new SFCDimensionDefinition(
new LongitudeDefinition(),
LONGITUDE_BITS)
};
SpaceFillingCurve hilbertSFC = SFCFactory.createSpaceFillingCurve(
SPATIAL_DIMENSIONS,
SFCType.HILBERT);
Assert.assertTrue(SignedBytes.lexicographicalComparator().compare(
hilbertSFC.getId(minValue),
hilbertSFC.getId(maxValue)) < 0);
}
// @Test(expected = IllegalArgumentException.class)
public void testGetId_2DSpatialIllegalArgument()
throws Exception {
int LATITUDE_BITS = 31;
int LONGITUDE_BITS = 31;
double[] testValues = new double[] {
-100,
-180
};
long expectedID = 0L;
SFCDimensionDefinition[] SPATIAL_DIMENSIONS = new SFCDimensionDefinition[] {
new SFCDimensionDefinition(
new LatitudeDefinition(),
LATITUDE_BITS),
new SFCDimensionDefinition(
new LongitudeDefinition(),
LONGITUDE_BITS)
};
SpaceFillingCurve hilbertSFC = SFCFactory.createSpaceFillingCurve(
SPATIAL_DIMENSIONS,
SFCType.HILBERT);
Assert.assertEquals(
expectedID,
ByteBuffer.wrap(
hilbertSFC.getId(testValues)).getLong());
}
@Test
public void testDecomposeQuery_2DSpatialOneIndexFilter() {
int LATITUDE_BITS = 31;
int LONGITUDE_BITS = 31;
SFCDimensionDefinition[] SPATIAL_DIMENSIONS = new SFCDimensionDefinition[] {
new SFCDimensionDefinition(
new LongitudeDefinition(),
LONGITUDE_BITS),
new SFCDimensionDefinition(
new LatitudeDefinition(),
LATITUDE_BITS)
};
SpaceFillingCurve hilbertSFC = SFCFactory.createSpaceFillingCurve(
SPATIAL_DIMENSIONS,
SFCType.HILBERT);
// Create a IndexRange object using the x axis
final NumericRange rangeX = new NumericRange(
55,
57);
// Create a IndexRange object using the y axis
final NumericRange rangeY = new NumericRange(
25,
27);
BasicNumericDataset spatialQuery = new BasicNumericDataset(
new NumericData[] {
rangeX,
rangeY
});
RangeDecomposition rangeDecomposition = hilbertSFC.decomposeQuery(
spatialQuery,
1);
Assert.assertEquals(
1,
rangeDecomposition.getRanges().length);
}
@Test
public void testDecomposeQuery_2DSpatialTwentyIndexFilters() {
int LATITUDE_BITS = 31;
int LONGITUDE_BITS = 31;
SFCDimensionDefinition[] SPATIAL_DIMENSIONS = new SFCDimensionDefinition[] {
new SFCDimensionDefinition(
new LongitudeDefinition(),
LONGITUDE_BITS),
new SFCDimensionDefinition(
new LatitudeDefinition(),
LATITUDE_BITS)
};
SpaceFillingCurve hilbertSFC = SFCFactory.createSpaceFillingCurve(
SPATIAL_DIMENSIONS,
SFCType.HILBERT);
// Create a IndexRange object using the x axis
final NumericRange rangeX = new NumericRange(
10,
57);
// Create a IndexRange object using the y axis
final NumericRange rangeY = new NumericRange(
25,
50);
BasicNumericDataset spatialQuery = new BasicNumericDataset(
new NumericData[] {
rangeX,
rangeY
});
RangeDecomposition rangeDecomposition = hilbertSFC.decomposeQuery(
spatialQuery,
20);
Assert.assertEquals(
20,
rangeDecomposition.getRanges().length);
}
/*public void testDecomposeQuery_2DSpatialRanges() {}*/
}