ABSTRACT Modeling a city poses a number of problems to computer graphics. Every urban area has a transportation network that follows population and environmental influences, and often a superimposed pattern plan. The buildings appearances follow historical, aesthetic and statutory rules. To create a virtual city, a roadmap has to be designed and a large number of buildings need to be generated. We propose a system using a procedural approach based on L-systems to model cities. From various image maps given as input, such as land-water boundaries and population density, our system generates a system of highways and streets, divides the land into lots, and creates the appropriate geometry for the buildings on the respective allotments. For the creation of a city street map, L-systems have been extended with methods that allow the consideration of global goals and local constraints and reduce the complexity of the production rules. An L-system that generates geometry and a texturing system based on texture elements and procedural methods compose the buildings. CR categories: F.4.2 [Mathematical Logic and Formal Languages]: Grammars and Other Rewriting Systems: Parallel Rewriting Systems, I.3.7 [Computer Graphics]: Three-Dimensional Graphics and Realism, I.6.3 [Simulation and Modeling]: Applications Keywords: L-system, software design, developmental models, modeling, urban development, architecture

Manifold Garden

Moniker

Conditional Design

Butterfly Effect

Girih, Muqarnas

Tom Beddard

http://sub.blue/fractal-lab

http://mandelbulb.com/