public static long fHtmEq(double ra, double dec)
{
double x, y, z;
HtmTrixel ht = new HtmTrixel();
SpatialVector.radec2cartesian(ra, dec, out x, out y, out z);
return ht.cartesian2HID(x, y, z, level);
}
public static long fHtmLatLon(double lat, double lon)
{
double x, y, z;
HtmTrixel ht = new HtmTrixel();
SpatialVector.radec2cartesian(lon, lat, out x, out y, out z);
return ht.cartesian2HID(x, y, z, level);
}
public static long fHtmXyz(double x, double y, double z)
{ // avoid zero vectors by setting them to 1,0,0.
if (Cartesian.Epsilon2 > (x * x + y * y + z * z)) { x = 0; y = 0; z = 1; }
HtmTrixel ht = new HtmTrixel();
return ht.cartesian2HID(x, y, z, level);
}
