In this paper, the authors present a method for generating fast conceptual urban design prototypes. T synthesize spatial configurations for street networks, parcels and building volumes. Therefore, we address the problem of implementing custom data structures for these configurations and how the generation process can be controlled and parameterized.
Authors exemplify the method by the development of new components for Grasshopper/Rhino3D and their application in the scope of selected case studies. By means of these components, they show use case applications of the synthesis algorithms. In the conclusion, they reflect on the advantages of being able to generate fast urban design prototypes, but they also discuss the disadvantages of the concept and the usage of Grasshopper as a user interface.