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H3C HEALPix library for PostgreSQL
(version 1.2)
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29 typedef double _h3c_vector[3];
31 void h3c_2xyz(
double lon,
double lat, _h3c_vector vect);
33 void h3c_vect_prod(_h3c_vector v1, _h3c_vector v2, _h3c_vector r);
void h3c_normalize(_h3c_vector u)
normalize in the united vector
void h3c_2radec(double *in, h3c_coord_t *out)
cartesian to polar
double h3c_scalar_product(_h3c_vector v1, _h3c_vector v2)
scalar product
void h3c_vect_prod(_h3c_vector v1, _h3c_vector v2, _h3c_vector r)
vectorial product
void h3c_unit_vector(double z, double phi, _h3c_vector res)
create a unit vector from a z coordinate and an azimuthal angle.
void h3c_2xyz(double lon, double lat, _h3c_vector vect)
compute coord in cartesian
double h3c_vect_length(_h3c_vector v)
get the length of a vector