Procedural Content Graphs for Urban Modeling

Pedro Brandão Silva, Elmar Eisemann, Rafael Bidarra, António Coelho

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

Abstract

Massive procedural content creation, for example, for virtual urban environments, is a difficult, yet important challenge. While shape grammars are a popular example of effectiveness in architectural modeling, they have clear limitations regarding readability, manageability, and expressive power when addressing a variety of complex structural designs. Moreover, shape grammars aim at geometry specification and do not facilitate integration with other types of content, such as textures or light sources, which could rather accompany the generation process. We present procedural content graphs, a graph-based solution for procedural generation that addresses all these issues in a visual, flexible, and more expressive manner. Besides integrating handling of diverse types of content, this approach introduces collective entity manipulation as lists, seamlessly providing features such as advanced filtering, grouping, merging, ordering, and aggregation, essentially unavailable in shape grammars. Hereby, separated entities can be easily merged or just analyzed together in order to perform a variety of context-based decisions and operations. The advantages of this approach are illustrated via examples of tasks that are either very cumbersome or simply impossible to express with previous grammar approaches.
Original languageEnglish
Article number808904
Pages (from-to)1-15
Number of pages15
JournalInternational Journal of Computer Games Technology
Volume2015
DOIs
Publication statusPublished - 28 May 2015

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