PostGIS  3.1.6dev-r@@SVN_REVISION@@

◆ distance3d_sqr_pt4d_pt4d()

static double distance3d_sqr_pt4d_pt4d ( const POINT4D p1,
const POINT4D p2 
)
inlinestatic

Definition at line 23 of file lwkmeans.c.

24 {
25  double hside = p2->x - p1->x;
26  double vside = p2->y - p1->y;
27  double zside = p2->z - p1->z;
28 
29  return hside * hside + vside * vside + zside * zside;
30 }
double x
Definition: liblwgeom.h:428
double z
Definition: liblwgeom.h:428
double y
Definition: liblwgeom.h:428

References POINT4D::x, POINT4D::y, and POINT4D::z.

Referenced by kmeans_init(), and update_r().

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