get_3dvector_from_points()

static int get_3dvector_from_points ( POINT3DZ *  p1, POINT3DZ *  p2, VECTOR3D *  v  )

inlinestatic

Definition at line 34 of file measures3d.c.

{
        v->x = p2->x - p1->x;
        v->y = p2->y - p1->y;
        v->z = p2->z - p1->z;
 
        return (!FP_IS_ZERO(v->x) || !FP_IS_ZERO(v->y) || !FP_IS_ZERO(v->z));
}

References FP_IS_ZERO, POINT3DZ::x, VECTOR3D::x, POINT3DZ::y, VECTOR3D::y, POINT3DZ::z, and VECTOR3D::z.

Referenced by define_plane(), lw_dist3d_ptarray_poly(), lw_dist3d_ptarray_tri(), lw_dist3d_seg_seg(), and project_point_on_plane().

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