Cesium 3D Tiles

Cesium IN ACTION

Sean Lilley

Analytical Graphics,

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Inc

slilley@agi.com

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Using Cesium for 3D Thematic Visualisations on the Web

Mátyás Gedea

a Department of Cartography and Geoinformatics, Eötvös Loránd University, Budapest, Hungary; saman@map.elte.hu

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Abstract: Cesium (http://cesiumjs.org) is an open source, WebGL-based JavaScript library for virtual globes and 3D maps. It is an excellent tool for 3D thematic visualisations, but to use its full functionality it has to be feed with its own file format, CZML. Unfortunately, this format is not yet supported by any major GIS software. This paper intro- duces a plugin for QGIS, developed by the author, which facilitates the creation of CZML file for various types of visualisations. The usability of Cesium is also examined in various hardware/software environments.

Keywords: Cesium API, Thematic mapping, CZML

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Document number: 18-053

Document type: Candidate OGC® Community Standard

Document subtype:

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Document stage: Pending

Document language: English

1

Open Geospatial Consortium

Submission Date: 2018-06-04

Approval Date: TBD

Publication Date: TBD

External identifier of this OGC® document: TBD

Internal reference number of this OGC® document: 18-053

Version: 1.0

Category: Candidate OGC® Community Standard

Editors: Patrick Cozzi, Sean Lilley, Gabby Getz

3D Tiles Specification 1.0

Copyright notice

Copyright © 2016-2018 Cesium and Open Geospatial Consortium

Warning

This document is an OGC Member endorsed international Community standard. This Community standard was developed outside of the OGC and the originating party may continue to update their work; however, this document is fixed in content. This document is available on a royalty free, non-discriminatory basis. Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to provide supporting documentation.

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Using FME to create 3D Tiles for Cesium from OpenStreetMap data

Overview

This tutorial explains how to create 3D Tiles for the Cesium virtual globe from OpenStreetMap data and show them on the globe. For data processing and tiling, FME is used which is one of the few softwares which can export 3D Tiles. In our example, we extrude buildings footprints. Once imported to Cesium, the buildings are colored by height.

DYNAMIC 3D VISUALIZATION OF FLOODS: CASE OF THE NETHERLANDS

K. Kumara, H. Ledouxa, J. Stotera

a 3D Geoinformation, Delft University of Technology, Delft, The Netherlands - (k.kavisha, h.ledoux, j.e.stoter)@tudelft.nl

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Commission VI, WG VI/4

KEY WORDS: Floods, 3D visualization, CityJSON, Cesium 3D webglobe

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Web-based visualization

of 3D cadastre

Barbara Cemellini

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2018

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