PostGIS  2.5.0beta1dev-r@@SVN_REVISION@@

◆ vector_difference()

static void vector_difference ( const POINT3D a,
const POINT3D b,
POINT3D n 
)
static

Calculate the difference of two vectors.

Definition at line 445 of file lwgeodetic.c.

References POINT3D::x, POINT3D::y, and POINT3D::z.

Referenced by edge_distance_to_point(), and unit_normal().

446 {
447  n->x = a->x - b->x;
448  n->y = a->y - b->y;
449  n->z = a->z - b->z;
450  return;
451 }
double y
Definition: liblwgeom.h:342
double x
Definition: liblwgeom.h:342
double z
Definition: liblwgeom.h:342
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