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/*=========================== MiscUTMConstants.h ============================*/
/* MiscUTMConstants class contains and supports the constants required for
calculating a Universal Transverse Mercator grid point.
Note that they are made public for the sake of efficient calculation.
This also introduces a violation of Object security and should be
handled very carefully.
Subclassing this is a simple way to create constants objects for any Grid.
Make sure there is only one instance in the system and protect it from
deletion by overriding free.
DMA Release 0.8, Copyright @1993 by Genesis Project, Ltd. All Rights
Reserved. For further information on terms and conditions see
the MiscKit license.
HISTORY
22-Feb-93 Dale Amon at GPL
Created.
*/
#import <Foundation/Foundation.h>
#import <MiscFoundation/miscgiskit.h>
#define MISC_CONVERGENCE_CRITERIA .0001 /* stop at .1 mm difference,
so we will be accurate at least
to 1mm */
#define MISC_UTM_CONSTANTS_VERSION_ID 0.8
@interface MiscUTMConstants:NSObject <NSCoding>
{ /* primary constants */
NSString* gridName; /* name of the UTM Grid this represents */
double a,b; /* Spheroid major and minor semi-axis */
double F0; /* scale factor at central Meridian */
@public
/* primary constants */
double phi0,lambda0; /* True Origin in World system */
double E0,N0; /* True Origin in local grid coordinates
meters offset from False Origin */
double convergence; /* The criteria for convergence */
/* secondary constants that are pre-calculated from primary constants */
double aF0; /* a * F0 */
double bF0; /* b * F0 */
double eSqrd; /* eccentricity squared */
double n;
double M1; /* constant 1 in M equation */
double M2; /* constant 2 in M equation */
double M3; /* constant 3 in M equation */
double M4; /* constant 4 in M equation */
@private
BOOL noFree; /* If set, this object cannot be free'd */
}
+ (void)initialize;
- initGridName: (NSString *) name
trueOrigin: (double) deg_latitude : (double) deg_longitude
inGrid: (double) e0: (double) n0
onSphere: (double) a0: (double) b0
centralMeridianScaling: (double) f0;
- override_eSqrd:(double)new_eSqrd n: (double)new_n;
- setProtected;
- setUnprotected;
- (void)dealloc;
- (NSString *) gridName;
- (BOOL) isEqual: anObject;
@end
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.