RMProjection.h
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//
// RMProjection.h
//
// Copyright (c) 2008-2013, Route-Me Contributors
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
#import <Foundation/Foundation.h>
#import <CoreLocation/CoreLocation.h>
#import "RMFoundation.h"
// Objective-C wrapper for PROJ4 map projection definitions.
@interface RMProjection : NSObject
@property (nonatomic, readonly) void *internalProjection;
@property (nonatomic, readonly) RMProjectedRect planetBounds;
@property (nonatomic, assign) BOOL projectionWrapsHorizontally;
// If #projectionWrapsHorizontally, returns #aPoint with its easting adjusted modulo Earth's diameter to be within projection's planetBounds. if !#projectionWrapsHorizontally, returns #aPoint unchanged.
- (RMProjectedPoint)wrapPointHorizontally:(RMProjectedPoint)aPoint;
// applies #wrapPointHorizontally to aPoint, and then clamps northing (Y coordinate) to projection's planetBounds
- (RMProjectedPoint)constrainPointToBounds:(RMProjectedPoint)aPoint;
+ (instancetype)googleProjection;
+ (instancetype)EPSGLatLong;
- (id)initWithString:(NSString *)proj4String inBounds:(RMProjectedRect)projectedBounds;
// inverse project meters, return latitude/longitude
- (CLLocationCoordinate2D)projectedPointToCoordinate:(RMProjectedPoint)aPoint;
// forward project latitude/longitude, return meters
- (RMProjectedPoint)coordinateToProjectedPoint:(CLLocationCoordinate2D)aLatLong;
#pragma mark - UTM conversions
+ (void)convertCoordinate:(CLLocationCoordinate2D)coordinate
toUTMZoneNumber:(int *)utmZoneNumber
utmZoneLetter:(NSString **)utmZoneLetter // may be NULL
isNorthernHemisphere:(BOOL *)isNorthernHemisphere // may be NULL
easting:(double *)easting
northing:(double *)northing;
+ (void)convertUTMZoneNumber:(int)utmZoneNumber
utmZoneLetter:(NSString *)utmZoneLetter // #utmZoneLetter will be used for calculations if not nil,
isNorthernHemisphere:(BOOL)isNorthernHemisphere // otherwise #isNorthernHemisphere
easting:(double)easting
northing:(double)northing
toCoordinate:(CLLocationCoordinate2D *)coordinate;
@end