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/MapView/Map/RMProjection.h

http://github.com/route-me/route-me
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. #import <Foundation/Foundation.h>
  28. #import <CoreLocation/CoreLocation.h>
  29. #import "RMFoundation.h"
  30. #import "RMLatLong.h"
  31. /// Objective-C wrapper for PROJ4 map projection definitions.
  32. @interface RMProjection : NSObject
  33. {
  34. /// This is actually a PROJ4 projPJ, but it is typed as void* so the proj_api doesn't have to be included
  35. void* internalProjection;
  36. /// the size of the earth, in projected units (meters, most often)
  37. RMProjectedRect planetBounds;
  38. /// hardcoded to YES in #initWithString:InBounds:
  39. BOOL projectionWrapsHorizontally;
  40. }
  41. @property (readonly) void* internalProjection;
  42. @property (readonly) RMProjectedRect planetBounds;
  43. @property (readwrite) BOOL projectionWrapsHorizontally;
  44. /// If #projectionWrapsHorizontally, returns #aPoint with its easting adjusted modulo Earth's diameter to be within projection's planetBounds. if !#projectionWrapsHorizontally, returns #aPoint unchanged.
  45. - (RMProjectedPoint) wrapPointHorizontally: (RMProjectedPoint) aPoint;
  46. /// applies #wrapPointHorizontally to aPoint, and then clamps northing (Y coordinate) to projection's planetBounds
  47. - (RMProjectedPoint) constrainPointToBounds: (RMProjectedPoint) aPoint;
  48. + (RMProjection *) googleProjection;
  49. + (RMProjection *) EPSGLatLong;
  50. + (RMProjection *) OSGB;
  51. /// anybody know what the InBounds: parameter means?
  52. - (id) initWithString: (NSString*)params InBounds: (RMProjectedRect) projBounds;
  53. /// inverse project meters, return latitude/longitude
  54. /// \deprecated rename pending after 0.5
  55. - (RMLatLong)pointToLatLong:(RMProjectedPoint)aPoint;
  56. /// forward project latitude/longitude, return meters
  57. /// \deprecated rename pending after 0.5
  58. - (RMProjectedPoint)latLongToPoint:(RMLatLong)aLatLong;
  59. @end