Resently, YOJU (Beijing) Architecture Design co.,Ltd. has released several pieces of software programmed by a team led by Jin You, who is also an famous architect. 

One of this software is called Parametric Control Based Architectural Lighting Calculator, and it helps architects to generate better modeling (like the rendering above). 

more details here:Parametric%20Control%20Based%20Architectural%20Lighting%20Calculator.doc