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What is that tilesAtHome (t@h) system that provides the osmarender layer on the openstreetmap.org frontpage and how does it work? |
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A central server tracks tiles (a portion of the map consisting of PNG images for the different zoom levels) that need to be rerender. Client computers running the t@h software connect to the server and ask for a tile they should render. They then connect to a TRAPI server and download the map data for that tile. Using osmarender the map data is converted to a SVG image which is then rasterized using inskcape or batik. The rendered images are packed into a tileset and uploaded to the server where they are stored until someone wants to look at the map. |
