Shadowing Calculation on Urban Areas from Semantic 3D City Models

Longxiang Xu, Camilo León-Sánchez*, Giorgio Agugiaro, Jantien Stoter

*Corresponding author for this work

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review


Nowadays, our society is in the transit to adopt more sustainable energy sources to reduce our impact on the environment; one alternative is solar energy. However, this is highly affected by the surroundings, which might cause shadowing effects. In this paper, we present our method to perform shadowing calculations in urban areas using semantic 3D city models, which is split into five sections: Point Grid Generation, Sun-Ray Generation, Nightside Filtering, Bounding Volume Hierarchy and the intersection between the sun rays and the BVH to identify which locations are shadowed at a given moment (epoch). Our tests are performed in Rotterdam’s city center, a dense urban area in The Netherlands. Our initial results indicate that the computational time per 100 k grid points fluctuates within 0.2–0.7s.
Original languageEnglish
Title of host publicationRecent Advances in 3D Geoinformation Science
Subtitle of host publicationProceedings of the 18th 3D GeoInfo Conference
EditorsThomas H. Kolbe, Andreas Donaubauer, Christof Beil
Place of PublicationCham
Number of pages17
ISBN (Electronic)978-3-031-43699-4
ISBN (Print)978-3-031-43698-7, 978-3-031-43701-4
Publication statusPublished - 2024
Event18th 3D Geoinfo Conference - Technical University of Munich, Munich, Germany
Duration: 12 Sept 202314 Sept 2023

Publication series

NameLecture Notes in Geoinformation and Cartography
ISSN (Print)1863-2246
ISSN (Electronic)1863-2351


Conference18th 3D Geoinfo Conference
Internet address

Bibliographical note

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.


  • Solar potential
  • 3DCM
  • Shadows analysis
  • Raytracing


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