An Open-Source Solution for Fast and Informative Modelling of Churches

Abstract This paper presents a computational approach based on formal rules and essential geometric parameters for generating simplified 3D models of historic churches, designed to support post-earthquake inspection activities. The methodological framework assumes the decomposition of the architectural organism into structurally significant units as the foundation for a digital shape grammar, capable of translating metric and typological information into spatial configurations consistent with reality. The system allows the rapid creation of visual representations adaptable to different existing morphological structures and aims to provide a digital tool that enables even users without advanced modelling skills to configure the model. Finally, through application tests on real cases, the study highlights the potential of parametric abstraction as a cognitive device for documenting built heritage in emergency conditions, opening prospects for more accessible and interoperable digital tools.