PostGIS  2.1.10dev-r@@SVN_REVISION@@
double sphere_distance_cartesian ( const POINT3D s,
const POINT3D e 
)

Given two unit vectors, calculate their distance apart in radians.

Definition at line 916 of file lwgeodetic.c.

References dot_product(), and FP_MIN.

Referenced by sphere_angle().

917 {
918  return acos(FP_MIN(1.0, dot_product(s, e)));
919 }
#define FP_MIN(A, B)
static double dot_product(const POINT3D *p1, const POINT3D *p2)
Convert cartesion coordinates on unit sphere to lon/lat coordinates static void cart2ll(const POINT3D...
Definition: lwgeodetic.c:397

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