PostGIS
2.4.9dev-r@@SVN_REVISION@@
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Finds a point on a plane from where the original point is perpendicular to the plane.
Definition at line 1237 of file measures3d.c.
References DOT, FP_IS_ZERO, get_3dvector_from_points(), PLANE3D::pop, PLANE3D::pv, VECTOR3D::x, POINT3DZ::x, VECTOR3D::y, POINT3DZ::y, VECTOR3D::z, and POINT3DZ::z.
Referenced by lw_dist3d_point_poly(), and lw_dist3d_ptarray_poly().