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Licence GNU FDL SARL / 16. septembre 2015 / www.oslandia.com / infos@oslandia.com
3D OpenSource software Stack FOSS4G 2015 Seoul Oslandia Team - - PowerPoint PPT Presentation
3D OpenSource software Stack FOSS4G 2015 Seoul Oslandia Team - - PowerPoint PPT Presentation
3D OpenSource software Stack FOSS4G 2015 Seoul Oslandia Team Licence GNU FDL SARL / 16. septembre 2015 / www.oslandia.com / infos@oslandia.com 2010 2013 2015 2016 E-PLU project PostGIS 2.0 2010 2013 2015 CGAL as GPL 2010 2012
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E-PLU project
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2010 2013 2015 PostGIS 2.0
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2010 2012 2015 CGAL as GPL
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PostgreSQL PostGIS GEOS SFCGAL CGAL 2010 2013 2015 SFCGAL 1.0
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ST_3DIntersects ST_3DDistance ST_3DIntersection ST_3DUnion ST_Tesselate ST_Extrude ST_StraightSkeleton
SFCGAL 1.2
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SFCGAL perfomances similar to GEOS ones for 2D (but with SFCGAL we gain arbitrary precision) But some 3D computation takes time.
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PostgreSQL PostGIS GEOS SFCGAL CGAL QGIS Horao 2010 2013 2015 Horao 1.0
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https://vimeo.com/74869530
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PostgreSQL PostGIS GEOS SFCGAL CGAL QGIS Horao Cesium Cesium Buidings MapServer Suite 2010 2013 2015 Cesium Buildings
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https://vimeo.com/139319528
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Plain WFS is OK (but no tiling) GeoJSON must be extended (for PS and TIN)
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Cesium use geocentric coordinates system Cesium buildings imply using local coordinates Real reprojection cost
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Cesium use geocentric coordinates system Cesium buildings imply using local coordinates Real reprojection cost Use only (simple) translation and rotation Performed at rendering time Imply to use small tiles to be accurate enough (500m for centimetric precision)
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Tiling known issue: Big feature behind you
Tile 1 Tile 2 Feature
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MTR : Multiple Render Target Edge Effect Compose Rendering Post Processing
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Keep real feature client side Keep same stack for both 2D and 3D data But hardware matters
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http://www.postgis.org http://sfcgal.org http://www.mapserver.org http://qgis.org http://oslandia.github.io/horao http://cesiumjs.org https://github.com/Oslandia/cesium-buildings
https://github.com/Oslandia/workshop-3d
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Keep increasing performances Enhance WebGL client features
2010 2013 2015 2016
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PostgreSQL/PostGIS nested function calls Avoid to check geometry validity (if uneeded)
2010 2013 2015 2016
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https://github.com/AnalyticalGraphicsInc/3d-tiles
2010 2013 2015 2016
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https://vimeo.com/139352042
Immersive 3D environment: ITowns
2010 2013 2015 2016 v1 v2
Oriented images Point Cloud Textured 3D volumes
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