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2014/10/15 ¤U¤È 10:11:10
iphone Programming Glossary: loclatPoint to location using compass http://stackoverflow.com/questions/5092845/point-to-location-using-compass degrees newHeading.magneticHeading M_PI 180 void calculateUserAngle CLLocationCoordinate2D user locLat ann objectForKey @ latitude floatValue locLon ann objectForKey @ longitude floatValue NSLog @ f f locLat locLon float pLat.. user locLat ann objectForKey @ latitude floatValue locLon ann objectForKey @ longitude floatValue NSLog @ f f locLat locLon float pLat float pLon if locLat user.latitude locLon user.longitude north east pLat user.latitude pLon locLon degrees.. latitude floatValue locLon ann objectForKey @ longitude floatValue NSLog @ f f locLat locLon float pLat float pLon if locLat user.latitude locLon user.longitude north east pLat user.latitude pLon locLon degrees 0 else if locLat user.latitude locLon..
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