cross_product()

static void cross_product ( const POINT3D *  a, const POINT3D *  b, POINT3D *  n  )

static

Calculate the cross product of two vectors.

Definition at line 454 of file lwgeodetic.c.

{
        n->x = a->y * b->z - a->z * b->y;
        n->y = a->z * b->x - a->x * b->z;
        n->z = a->x * b->y - a->y * b->x;
        return;
}

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

Referenced by lwpoly_pt_outside_hack(), unit_normal(), and vector_angle().

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