rhino io plugin for c4d
A plugin you might find helpful.
Rhino.io is a new connection and import/export plugin, that lets you directly open and save native Rhino3d (.3dm) files from and into MAXON Cinema4d. In addition, updated files in Rhino3d can be merged and they will be automatically updated into Cinema4d. This enables Cinema4d users to use the model in Rhino3d and CINEMA4D at the same time, any update in Rhino3d will be transferred to Cinema4d.
Rhinoceros 3d could therefore also act as a “NURBS plugin for the Cinema4d“, connecting best of both worlds. Rhino3d’s precise and extensive CAD and NURBS tool set, with Cinema4ds modern and flexible tools. Rhino.io imported models also are ready to use for any high quality 3rd party engine like VRAYforC4D, Maxwell, Fryrender, ….)