/MapView/Map/RMProjection.h
C Header | 71 lines | 22 code | 12 blank | 37 comment | 0 complexity | 68075f6bd03dd07de8e07c3dfceb7712 MD5 | raw file
1// 2// RMProjection.h 3// 4// Copyright (c) 2008-2009, Route-Me Contributors 5// All rights reserved. 6// 7// Redistribution and use in source and binary forms, with or without 8// modification, are permitted provided that the following conditions are met: 9// 10// * Redistributions of source code must retain the above copyright notice, this 11// list of conditions and the following disclaimer. 12// * Redistributions in binary form must reproduce the above copyright notice, 13// this list of conditions and the following disclaimer in the documentation 14// and/or other materials provided with the distribution. 15// 16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 17// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 20// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26// POSSIBILITY OF SUCH DAMAGE. 27 28#import <Foundation/Foundation.h> 29#import <CoreLocation/CoreLocation.h> 30 31#import "RMFoundation.h" 32#import "RMLatLong.h" 33 34/// Objective-C wrapper for PROJ4 map projection definitions. 35@interface RMProjection : NSObject 36{ 37 /// This is actually a PROJ4 projPJ, but it is typed as void* so the proj_api doesn't have to be included 38 void* internalProjection; 39 40 /// the size of the earth, in projected units (meters, most often) 41 RMProjectedRect planetBounds; 42 43 /// hardcoded to YES in #initWithString:InBounds: 44 BOOL projectionWrapsHorizontally; 45} 46 47@property (readonly) void* internalProjection; 48@property (readonly) RMProjectedRect planetBounds; 49@property (readwrite) BOOL projectionWrapsHorizontally; 50 51/// If #projectionWrapsHorizontally, returns #aPoint with its easting adjusted modulo Earth's diameter to be within projection's planetBounds. if !#projectionWrapsHorizontally, returns #aPoint unchanged. 52- (RMProjectedPoint) wrapPointHorizontally: (RMProjectedPoint) aPoint; 53 54/// applies #wrapPointHorizontally to aPoint, and then clamps northing (Y coordinate) to projection's planetBounds 55- (RMProjectedPoint) constrainPointToBounds: (RMProjectedPoint) aPoint; 56 57+ (RMProjection *) googleProjection; 58+ (RMProjection *) EPSGLatLong; 59+ (RMProjection *) OSGB; 60 61/// anybody know what the InBounds: parameter means? 62- (id) initWithString: (NSString*)params InBounds: (RMProjectedRect) projBounds; 63 64/// inverse project meters, return latitude/longitude 65/// \deprecated rename pending after 0.5 66- (RMLatLong)pointToLatLong:(RMProjectedPoint)aPoint; 67/// forward project latitude/longitude, return meters 68/// \deprecated rename pending after 0.5 69- (RMProjectedPoint)latLongToPoint:(RMLatLong)aLatLong; 70 71@end