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What I need or require:
I need a tiling system coded for a working iPhone map application. The App works and uses a mapview with routes overlaid as lines from a SQLite db as needed. The current system finds the visible area, then scans the entire db for lines that should be drawn, then draws. This takes up to 4 seconds on an non-3GS iphone. We would like the Tiling system to somehow implement a method where only a portion of the DB is loaded at a time as needed to speed up loading, panning, zooming and line redraw speed. We can provide 2 example ideas of how this can be accomplished, however any other proposed method will be considered.
What I already have versus what the provider will build:
We have a working iPhone app completed with source code available. It does not implement any tiling, and is therefor slow to redraw but fully functional. The DB of "routes" is complete and available in Google Earth KML or as a SQLite db. A program to convert kml to a SQLite db is also done. W...
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