ios-地球坐标转火星坐标,火星坐标转百度坐标,百度坐标转火星

2017-01-14 15:49:04来源:http://www.jianshu.com/p/efd0946b0995作者:鬼灯水月人点击

#import<CoreLocation/CoreLocation.h>

CLLocation类扩展

*/

@interface CLLocation (Sino)

/**地球坐标转火星坐标*/

- (CLLocation*)locationMarsFromEarth;

/**火星坐标转百度坐标*/

- (CLLocation*)locationBearPawFromMars;

/**百度坐标转火星坐标*/

- (CLLocation*)locationMarsFromBearPaw;

#import "CLLocation+Sino.h"

void transform_earth_2_mars(double lat, double lng, double* tarLat, double* tarLng);

void transform_mars_2_bear_paw(double lat, double lng, double* tarLat, double* tarLng);

void transform_bear_paw_2_mars(double lat, double lng, double* tarLat, double* tarLng);

@implementation CLLocation (Sino)

- (CLLocation*) locationMarsFromEarth {

double lat = 0.0;

double lng = 0.0;

transform_earth_2_mars(self.coordinate.latitude, self.coordinate.longitude, &lat, &lng);

return [[CLLocation alloc] initWithCoordinate:CLLocationCoordinate2DMake(lat, lng)

altitude:self.altitude

horizontalAccuracy:self.horizontalAccuracy

verticalAccuracy:self.verticalAccuracy

course:self.course

speed:self.speed

timestamp:self.timestamp];

}

- (CLLocation*) locationBearPawFromMars {

double lat = 0.0;

double lng = 0.0;

transform_mars_2_bear_paw(self.coordinate.latitude, self.coordinate.longitude, &lat, &lng);

return [[CLLocation alloc] initWithCoordinate:CLLocationCoordinate2DMake(lat, lng)

altitude:self.altitude

horizontalAccuracy:self.horizontalAccuracy

verticalAccuracy:self.verticalAccuracy

course:self.course

speed:self.speed

timestamp:self.timestamp];

}

- (CLLocation*) locationMarsFromBearPaw {

double lat = 0.0;

double lng = 0.0;

transform_bear_paw_2_mars(self.coordinate.latitude, self.coordinate.longitude, &lat, &lng);

return [[CLLocation alloc] initWithCoordinate:CLLocationCoordinate2DMake(lat, lng)

altitude:self.altitude

horizontalAccuracy:self.horizontalAccuracy

verticalAccuracy:self.verticalAccuracy

course:self.course

speed:self.speed

timestamp:self.timestamp];

}

@end

const double a = 6378245.0;

const double ee = 0.00669342162296594323;

bool transform_sino_out_china(double lat, double lon) {

if (lon < 72.004 || lon > 137.8347)

return true;

if (lat < 0.8293 || lat > 55.8271)

return true;

return false;

}

double transform_earth_2_mars_lat(double x, double y) {

double ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y + 0.2 * sqrt(abs(x));

ret += (20.0 * sin(6.0 * x * M_PI) + 20.0 * sin(2.0 * x * M_PI)) * 2.0 / 3.0;

ret += (20.0 * sin(y * M_PI) + 40.0 * sin(y / 3.0 * M_PI)) * 2.0 / 3.0;

ret += (160.0 * sin(y / 12.0 * M_PI) + 320 * sin(y * M_PI / 30.0)) * 2.0 / 3.0;

return ret;

}

double transform_earth_2_mars_lng(double x, double y) {

double ret = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1 * sqrt(abs(x));

ret += (20.0 * sin(6.0 * x * M_PI) + 20.0 * sin(2.0 * x * M_PI)) * 2.0 / 3.0;

ret += (20.0 * sin(x * M_PI) + 40.0 * sin(x / 3.0 * M_PI)) * 2.0 / 3.0;

ret += (150.0 * sin(x / 12.0 * M_PI) + 300.0 * sin(x / 30.0 * M_PI)) * 2.0 / 3.0;

return ret;

}

void transform_earth_2_mars(double lat, double lng, double* tarLat, double* tarLng) {

if (transform_sino_out_china(lat, lng)) {

*tarLat = lat;

*tarLng = lng;

return;

}

double dLat = transform_earth_2_mars_lat(lng - 105.0, lat - 35.0);

double dLon = transform_earth_2_mars_lng(lng - 105.0, lat - 35.0);

double radLat = lat / 180.0 * M_PI;

double magic = sin(radLat);

magic = 1 - ee * magic * magic;

double sqrtMagic = sqrt(magic);

dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * M_PI);

dLon = (dLon * 180.0) / (a / sqrtMagic * cos(radLat) * M_PI);

*tarLat = lat + dLat;

*tarLng = lng + dLon;

}

const double x_pi = M_PI * 3000.0 / 180.0;

void transform_mars_2_bear_paw(double gg_lat, double gg_lon, double *bd_lat, double *bd_lon) {

double x = gg_lon, y = gg_lat;

double z = sqrt(x * x + y * y) + 0.00002 * sin(y * x_pi);

double theta = atan2(y, x) + 0.000003 * cos(x * x_pi);

*bd_lon = z * cos(theta) + 0.0065;

*bd_lat = z * sin(theta) + 0.006;

}

void transform_bear_paw_2_mars(double bd_lat, double bd_lon, double *gg_lat, double *gg_lon) {

double x = bd_lon - 0.0065, y = bd_lat - 0.006;

double z = sqrt(x * x + y * y) - 0.00002 * sin(y * x_pi);

double theta = atan2(y, x) - 0.000003 * cos(x * x_pi);

*gg_lon = z * cos(theta);

*gg_lat = z * sin(theta);

}




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