Use Generalized Drawing Primitive 3 to specify a three-dimensional generalized drawing primitive (GDP 3) element and insert it into the open structure following the element pointer or replace the element pointed at by the element pointer with a Generalized Drawing Primitive 3 structure element, depending on the current edit mode.
There are no GDP 3 identifiers currently defined by the graPHIGS API. Therefore, when the graPHIGS API encounters this type of element, it does not display the primitive nor does it generate an error. However, GDPs are available through the GPxxxx subroutines. See The graPHIGS Programming Interface: Subroutine Reference for details.
|pgdp3 (point_list, gdp3_id, gdp_data)|
|PGDP3 (n, pxa, pya, pza, primid, ldr, datrec)|