In the V1.0 documentation for Cpw, in the Primitives section, it states the following for Cones:
CPW_PRIM_3D_WIRECONE, /* wire cone baseradius, topradius, slices, stacks */
CPW_PRIM_3D_SOLIDCONE, /* solid cone baseradius, topradius, slices, stacks */
I wanted to note that without Height, the “Cone” appears to look like a “Disk”.