Node having paintfx hair interface to mentalray?

[pyrochlore]

Hi all,

I am new to Maya API,
I want to know is it possible to write a node,
it shows curves by OpenGL in viewport,
but when doing the render using mentalray or other renderer,
the node provide proper interface that those curves can be rendered just like piantfx hair.
(I thought if these renderers get curve geometry from paintfx by MfnPfxGeometry, I can provide same interface for them!?)

Any idea about the implementation?
Should I use MfnLocator as a start point?

Thanks.