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#import "LocationCoordinate2DTransformer.h"
#import "NSValue+Additions.h"
NSString *StringFromDegrees(CLLocationDegrees degrees, char positiveDirection, char negativeDirection) {
double minutes = (degrees - floor(degrees)) * 60;
double seconds = (minutes - floor(minutes)) * 60;
NSMutableString *string = [NSMutableString stringWithFormat:@"%.0f°", fabs(degrees)];
if (floor(minutes) || floor(seconds)) {
[string appendFormat:@"%.0f′", minutes];
}
if (floor(seconds)) {
[string appendFormat:@"%.0f″", seconds];
}
if (degrees) {
[string appendFormat:@"%c", degrees > 0 ? positiveDirection : negativeDirection];
}
return string;
}
@implementation LocationCoordinate2DTransformer
+ (Class)transformedValueClass {
return [NSString class];
}
+ (BOOL)allowsReverseTransformation {
return NO;
}
- (id)transformedValue:(id)value {
if (![value isKindOfClass:[NSValue class]]) {
return nil;
}
CLLocationCoordinate2D coordinate = [value CLLocationCoordinate2DValue];
return [NSString stringWithFormat:@"%@, %@",
StringFromDegrees(coordinate.latitude, 'N', 'S'),
StringFromDegrees(coordinate.longitude, 'E', 'W')];
}
@end
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