public void NegativeCoordinateShouldThrowAnExceptionOnPositiveHilbertGrid()
{
HilbertEncoder encoder = new HilbertEncoder(false, false);
Should.Throw <ArgumentException>(() => encoder.Encode(new Coordinate(-1, 1)));
Should.Throw <ArgumentException>(() => encoder.Encode(new Coordinate(1, -1)));
Should.Throw <ArgumentException>(() => encoder.Encode(new Coordinate(-1, -1)));
}
public void EncodeInteger2DNegativePointOnHilbertCurveTest()
{
HilbertEncoder encoder = new HilbertEncoder(false, true);
// correct for offset to search for zero point on the grid
UInt32 correction = UInt32.MaxValue / 2;
Coordinate zeroPointOnNegativeGrid = new Coordinate(-correction, -correction);
BigInteger hilbertCode = encoder.Encode(zeroPointOnNegativeGrid);
hilbertCode.ShouldBe(new BigInteger(0));
}
public void EncodeFractional2DPositivePointOnHilbertCurveTest()
{
HilbertEncoder encoder = new HilbertEncoder(false, false);
BigInteger hilbertCode = encoder.Encode(new Coordinate(0.1D, 0.1D));
hilbertCode.ShouldBe(new BigInteger(0));
hilbertCode = encoder.Encode(new Coordinate(0.8D, 0D));
hilbertCode.ShouldBe(new BigInteger(1));
hilbertCode = encoder.Encode(new Coordinate(0.5D, 0D));
hilbertCode.ShouldBe(new BigInteger(0));
hilbertCode = encoder.Encode(new Coordinate(0, 0.8D));
hilbertCode.ShouldBe(new BigInteger(3));
}
public void EncodeInteger3DPositivePointOnHilbertCurveTest()
{
HilbertEncoder encoder = new HilbertEncoder(true, false);
BigInteger hilbertCode = encoder.Encode(new Coordinate(0, 0, 0));
hilbertCode.ShouldBe(new BigInteger(0));
hilbertCode = encoder.Encode(new Coordinate(1, 0, 0));
hilbertCode.ShouldBe(new BigInteger(1));
hilbertCode = encoder.Encode(new Coordinate(0, 1, 0));
hilbertCode.ShouldBe(new BigInteger(7));
hilbertCode = encoder.Encode(new Coordinate(0, 0, 1));
hilbertCode.ShouldBe(new BigInteger(3));
hilbertCode = encoder.Encode(new Coordinate(5, 5, 5));
hilbertCode.ShouldBe(new BigInteger(359));
}