BIM 기반 Ray-casting을 활용한 건축물 입면 가시성의 자동화 분석 프레임워크 연구 - Revit–Dynamo 통합 환경에서의 정량적 가시성 지수 산출 및 데이터 피드백 구현 -

초록

In high-density urban environments, the visual exposure of a building's facade is a critical factor in pedestrian experience and commercial viability, yet conventional two-dimensional visibility methods such as Isovist theory and Visibility Graph Analysis remain limited in three-dimensional urban contexts. This study proposes an automated facade visibility analysis framework operating entirely within an integrated Revit–Dynamo environment, in which a Ray-casting algorithm implemented via Python Script determines geometric intersection between observation viewpoints and UV-parameterized facade evaluation points without reliance on external software. The resulting Hit Ratio (HR) indices are recorded directly into BIM Shared Parameters and visualized through Revit View Filters, establishing a quantitative data feedback loop that supports objective, data-driven facade design decision-making from the early stages of architectural planning.

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