iOS中定位当前位置坐标及转换为火星坐标的方法

}

//把百度地图转换成谷歌地图--火星坐标

-(CLLocationCoordinate2D)hhTrans_GCGPS:(CLLocationCoordinate2D)baiduGps

{

    CLLocationCoordinate2D googleGps;

    double bd_x=baiduGps.longitude - 0.0065;

    double bd_y=baiduGps.latitude - 0.006;

    double z = sqrt(bd_x * bd_x + bd_y * bd_y) - 0.00002 * sin(bd_y * x_pi);

    double theta = atan2(bd_y, bd_x) - 0.000003 * cos(bd_x * x_pi);

    googleGps.longitude = z * cos(theta);

    googleGps.latitude = z * sin(theta);

    return googleGps;

}

 

-(void)SetPurchaseMapPoint:(CLLocationCoordinate2D)myLocation MKMapView:(MKMapView *)mapView

{

    POI* m_poi = [[POI alloc]initWithCoords:myLocation];

   
    [mapView addAnnotation:m_poi];
 

    MKCoordinateRegion theRegion = { {0.0, 0.0 }, { 0.0, 0.0 } };

    theRegion.center=myLocation;

    [mapView setZoomEnabled:YES];

    [mapView setScrollEnabled:YES];

    theRegion.span.longitudeDelta = 0.01f;

    theRegion.span.latitudeDelta = 0.01f;

    [mapView setRegion:theRegion animated:YES];}

@end

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