private GeoHash(double latitude, double longitude, int desiredPrecision)
{
m_point = new WGS84Point(latitude, longitude);
desiredPrecision = Math.Min(desiredPrecision, MAX_BIT_PRECISION);
bool isEvenBit = true;
double[] latitudeRange = new double[] { -90, 90 };
double[] longitudeRange = new double[] { -180, 180 };
while (m_significantBits < desiredPrecision)
{
if (isEvenBit)
{
DivideRangeEncode(longitude, longitudeRange);
}
else
{
DivideRangeEncode(latitude, latitudeRange);
}
isEvenBit = !isEvenBit;
}
SetBoundingBox(this, latitudeRange, longitudeRange);
m_bits <<= (MAX_BIT_PRECISION - desiredPrecision);
}
/// <inheritdoc />
public override bool Equals(object obj)
{
if (obj is WGS84Point)
{
WGS84Point other = (WGS84Point)obj;
return(m_latitude == other.m_latitude && m_longitude == other.m_longitude);
}
return(false);
}
/// <summary>
///
/// </summary>
/// <param name="other"></param>
public WGS84Point(WGS84Point other) : this(other.m_latitude, other.m_longitude)
{
}
/// <summary>
/// create a new <seealso cref="GeoHash"/> with the given number of bits accuracy. This
/// at the same time defines this hash's bounding box.
/// </summary>
/// <param name="point">Location to create <seealso cref="GeoHash"/> for</param>
/// <param name="numberOfBits">How may bits precision to use (64 is recommended)</param>
/// <returns></returns>
public static GeoHash withBitPrecision(WGS84Point point, int numberOfBits)
{
return(WithBitPrecision(point.Latitude, point.Longitude, numberOfBits));
}
/// <summary>
/// ?
/// </summary>
/// <param name="point">?</param>
/// <param name="radius">?</param>
/// <returns>?</returns>
public bool EnclosesCircleAroundPoint(WGS84Point point, double radius)
{
return(false);
}
/// <summary>
/// find out if the given point lies within this hashes bounding box.
/// <i>Note: this operation checks the bounding boxes coordinates, i.e. does
/// not use the <seealso cref="GeoHash"/>s special abilities.s</i>
/// </summary>
public bool Contains(WGS84Point point)
{
return(m_boundingBox.Contains(point));
}
/// <summary>
/// create a bounding box defined by two coordinates
/// </summary>
public BoundingBox(WGS84Point p1, WGS84Point p2) : this(p1.Latitude, p2.Latitude, p1.Longitude, p2.Longitude)
{
}
/// <summary>
/// Is <see cref="WGS84Point"/> within <see cref="BoundingBox"/>
/// </summary>
/// <param name="point"><see cref="WGS84Point"/> for containment check</param>
/// <returns><c>true</c> if contained; otherwise <c>false</c></returns>
public virtual bool Contains(WGS84Point point)
{
return((point.Latitude >= m_minLat) && (point.Longitude >= m_minLon) && (point.Latitude <= m_maxLat) && (point.Longitude <= m_maxLon));
}
