catenary curves through the force of gravity acting on the strings. The German architect Frei Otto also experimented with non-digital parametric processes, using soap bubbles to find optimal shapes of tensegrity structures such as in the Munich Olympic Stadium, designed for the 1972 Summer Olympics in Munich. Architecture Nature has often served as inspiration for architects and designers. Computer technology has given designers and architects the tools to analyse and simulate the complexity observed in nature and apply it to structural building shapes and urban organizational patterns. In the 1980s architects and designers started using computers running software developed for the aerospace and moving picture industries to "animate form". One of the first architects and theorists that used computers to generate architecture was Greg Lynn. His blob and fold architecture is some of the early examples of computer generated architecture. Shenzhen Bao'an International Airport's new Terminal 3, finished in 2013, designed by Italian architect Massimiliano Fuksas, with parametric design support by the engineering firm Knippers Helbig, is an example for the use of parametric design and production technologies in a large scale building. Urban design Parametric urbanism is concerned with the study and prediction of settlement patterns. Architect Frei Otto distinguishes occupying and connecting as the two fundamental processes that are involved with all urbanisation. Parametric processes can help optimize pedestrian or vehicle circulation, block and façade orientations and instantly compare the different performances of multiple urban design options. Software Power Surfacing Power Surfacing is a SolidWorks application for industrial design, freeform organic surface, and solids modeling. Scanned meshes can be reverse engineered with Power Surfacing RE. Catia CATIA (Computer-aided three-dimensional interactive application) was used by architect Frank Gehry to design some of his award-winning curvilinear buildings such as the Guggenheim Museum Bilbao. Gehry Technologies have since created Digital Project, their own parametric design software based on their experience with CATIA. Autodesk 3DS Max Autodesk 3ds Max is a parametric 3D modeling software which provides modeling, animation, simulation, and rendering functions for games, film, and motion graphics. 3ds Max uses the concept of modifiers and wired parameters to control its geometry and gives the user the ability to script its functionality. Max Creation Graph is a visual programming node-based tool creation environment in 3ds Max 2016 that is similar to Grasshopper and Dynamo. Autodesk Maya Autodesk Maya is a 3D computer graphics software originally developed by Alias Systems Corporation (formerly