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POAdding vector map data to iOS GPS app. Real Time vector graphics rendering
 

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    <p>We are working on a project to add vector map data from OSM and NAVTEQ to a iOS GPS app.</p> <p>Currently, the app displays raster map images and provides moving map navigation features. We now want to take it a step further by integration vector maps but don't know where to start.</p> <p>Guidance from developers with experience on GPS navigation would be great.</p> <p>Here is the brief on the requirements:</p> <p><strong>Target Devices:</strong> iOS. C++ is preferred for the core for future compatibility with other platforms.</p> <p><strong>Data integration and packaging:</strong> Map data source: - NAVTEQ - OpenStreetMap</p> <p><strong>File format:</strong> - Ideal for mobile devices with considerations of device limitations. - Either find an already established format, or create one in house.</p> <p><strong>Compiling:</strong> - Determine a format for source data (Shp, MapInfo etc) - Compile source format to required format.</p> <p><strong>Map rendering engine:</strong> Display of maps: - Vector map view will be separate to the current raster map view. - Render data into lines, points, polygons etc in real time. Tiled or pre-rendered is not acceptable. - 2D birdseye view. (3D is planned for future versions). - Shade relief to illustrate elevation. - Display user generated data such as routes, tracklogs, waypoints. - A scale, e.g. 500 metres. - Speedy performance is essential to provide better user experience. - Good examples would be the Tom Tom iOS app. <strong>Map Interactions:</strong> - Pan, Zoom, rotate. - Make use of multitouch functionality. Search - Address, locations, POI (Geo Coding) - Address from location (Reverse Geo Coding)</p> <p><strong>Style sheets</strong> - Easily customise the look of the map been displayed. - Every element can be cusomised.</p> <p>We would like to find out where to start our research. What libraries and SDKs are out there that are worth spending the time investigating?</p>
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