###OSMJsonMapFlying
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Original Code : https://github.com/tangrams/ofVectorTile ( I have changed some codes. )
my git : https://github.com/jeonghopark/ofVectorTile -
ofxFontStash, ofxUnicode, ofxFirstPersonCamera, ofxImmediateodeInput, fxCsv, ofxHui, ofxJSON
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Map coordinate : http://www.maptiler.org/google-maps-coordinates-tile-bounds-projection/
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Map Data : https://mapzen.com/documentation/vector-tiles/use-service/