IOS-WGS84与百度坐标转换
今早搞了半天的百度地图，发现跟⾕歌地图⽐起来各有优势吧，当初做⾕歌的时候⽂档全是英⽂的 尼玛 所以百度地图相对还是⽐较简单。由于项⽬需要是WGS84的坐标 百度地图SDK采⽤的是百度⾃有的地理坐标系（bdll09）但是百度没提供接⼝ 这就要我们⼿动撸码了。。。直接上代码
.h⽂件
#import<CoreLocation/CoreLocation.h>
/**
* 判断是否在中国
*/
+(BOOL)isLocationOutOfChina:(CLLocationCoordinate2D)location;
/**
* 将WGS-84转为GCJ-02(⽕星坐标):
*/
+(CLLocationCoordinate2D)transformFromWGSToGCJ:(CLLocationCoordinate2D)wgsLoc;
/**
* 将GCJ-02(⽕星坐标)转为百度坐标:
*/
+(CLLocationCoordinate2D)transformFromGCJToBaidu:(CLLocationCoordinate2D)p;
/**
* 将百度坐标转为GCJ-02(⽕星坐标):
*/
+(CLLocationCoordinate2D)transformFromBaiduToGCJ:(CLLocationCoordinate2D)p;
/**
* 将GCJ-02(⽕星坐标)转为WGS-84:
*/
+(CLLocationCoordinate2D)transformFromGCJToWGS:(CLLocationCoordinate2D)p;
.m⽂件以下是实现⽅法
⾸先包含
爱的怒放#import<math.h>
#import<UIKit/UIGeometry.h>
定义
static const double a = 6378245.0;
路的远方
static const double ee = 0.00669342162296594323;
static const double pi = 3.14159265358979324;
static const double xPi = M_PI * 3000.0 / 180.0;
+(CLLocationCoordinate2D)transformFromWGSToGCJ:(CLLocationCoordinate2D)wgsLoc
{
CLLocationCoordinate2D adjustLoc;
double adjustLat = [lf transformLatWithX:wgsLoc.longitude - 105.0 withY:wgsLoc.latitude - 35.0]; double adjustLon = [lf transformLonWithX:wgsLoc.longitude - 105.0 withY:wgsLoc.latitude - 35.0]; long double radLat = wgsLoc.latitude / 180.0 * pi;
long double magic = sin(radLat);
magic = 1 - ee * magic * magic;
long double sqrtMagic = sqrt(magic);
adjustLat = (adjustLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi);
adjustLon = (adjustLon * 180.0) / (a / sqrtMagic * cos(radLat) * pi);
adjustLoc.latitude = wgsLoc.latitude + adjustLat;
adjustLoc.longitude = wgsLoc.longitude + adjustLon;
return adjustLoc;
}
+ (double)transformLatWithX:(double)x withY:(double)y
{
double lat = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y + 0.2 * sqrt(fabs(x));
lat += (20.0 * sin(6.0 * x * pi) + 20.0 *sin(2.0 * x * pi)) * 2.0 / 3.0;
lat += (20.0 * sin(y * pi) + 40.0 * sin(y / 3.0 * pi)) * 2.0 / 3.0;
lat += (160.0 * sin(y / 12.0 * pi) + 320 * sin(y * pi / 30.0)) * 2.0 / 3.0;
return lat;
+ (double)transformLonWithX:(double)x withY:(double)y
{
double lon = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1 * sqrt(fabs(x));
英文的英语怎么写
lon += (20.0 * sin(6.0 * x * pi) + 20.0 * sin(2.0 * x * pi)) * 2.0 / 3.0;
lon += (20.0 * sin(x * pi) + 40.0 * sin(x / 3.0 * pi)) * 2.0 / 3.0;
lon += (150.0 * sin(x / 12.0 * pi) + 300.0 * sin(x / 30.0 * pi)) * 2.0 / 3.0;
return lon;
}
+(CLLocationCoordinate2D)transformFromGCJToBaidu:(CLLocationCoordinate2D)p
{
long double z = sqrt(p.longitude * p.longitude + p.latitude * p.latitude) + 0.00002 * sin(p.latitude * xPi);
long double theta = atan2(p.latitude, p.longitude) + 0.000003 * cos(p.longitude * xPi); CLLocationCoordinate2D geoPoint;
geoPoint.latitude = (z * sin(theta) + 0.006);猪发情
geoPoint.longitude = (z * cos(theta) + 0.0065);
return geoPoint;
}
+(CLLocationCoordinate2D)transformFromBaiduToGCJ:(CLLocationCoordinate2D)p
{
double x = p.longitude - 0.0065, y = p.latitude - 0.006;
double z = sqrt(x * x + y * y) - 0.00002 * sin(y * xPi);
double theta = atan2(y, x) - 0.000003 * cos(x * xPi);
CLLocationCoordinate2D geoPoint;
geoPoint.latitude = z * sin(theta);
geoPoint.longitude = z * cos(theta);
return geoPoint;
}
+(CLLocationCoordinate2D)transformFromGCJToWGS:(CLLocationCoordinate2D)p永不言弃作文
double threshold = 0.00001;
// The boundary
double minLat = p.latitude - 0.5;
double maxLat = p.latitude + 0.5;
double minLng = p.longitude - 0.5;
double maxLng = p.longitude + 0.5;
double delta = 1;
int maxIteration = 30;
// Binary arch
while(true)
{
CLLocationCoordinate2D leftBottom = [[lf class] transformFromWGSToGCJ:(CLLocationCoordinate2D){.latitude = minLat,.longitude = minLng}];
英文我爱你
CLLocationCoordinate2D rightBottom = [[lf class] transformFromWGSToGCJ:(CLLocationCoordinate2D){.latitude = minLat,.longitude = maxLng}];
CLLocationCoordinate2D leftUp = [[lf class] transformFromWGSToGCJ:(CLLocationCoordinate2D){.latitude =
maxLat,.longitude = minLng}];
CLLocationCoordinate2D midPoint = [[lf class] transformFromWGSToGCJ:(CLLocationCoordinate2D){.latitude = ((minLat + maxLat) / 2),.longitude = ((minLng + maxLng) / 2)}];
delta = fabs(midPoint.latitude - p.latitude) + fabs(midPoint.longitude - p.longitude);
if(maxIteration-- <= 0 || delta <= threshold)
{
return (CLLocationCoordinate2D){.latitude = ((minLat + maxLat) / 2),.longitude = ((minLng + maxLng) / 2)};
}
if(isContains(p, leftBottom, midPoint))
{
maxLat = (minLat + maxLat) / 2;
maxLng = (minLng + maxLng) / 2;
}
el if(isContains(p, rightBottom, midPoint))
maxLat = (minLat + maxLat) / 2;
minLng = (minLng + maxLng) / 2;
}
el if(isContains(p, leftUp, midPoint))
{
minLat = (minLat + maxLat) / 2;
maxLng = (minLng + maxLng) / 2;
}
el
{
minLat = (minLat + maxLat) / 2;
minLng = (minLng + maxLng) / 2;
}
}
}
static bool isContains(CLLocationCoordinate2D point, CLLocationCoordinate2D p1, CLLocationCoordinate2D p2)
辐射防护三原则{
return (point.latitude >= MIN(p1.latitude, p2.latitude) && point.latitude <= MAX(p1.latitude, p2.latitude)) && (point.longitude >= MIN(p1.longitude,p2.longitude) && point.longitude <= MAX(p1.longitude, p2.longitude));
}
/**
马连成* 判断是不是在中国
* ⽤引射线法判断 点是否在多边形内部
*/
+ (BOOL)isLocationOutOfChina:(CLLocationCoordinate2D)location {
CGPoint point = CGPointMake(location.latitude, location.longitude);
BOOL oddFlag = NO;
NSInteger j = [lf polygonOfChina].count - 1;
for (NSInteger i = 0; i < [lf polygonOfChina].count; i++) {
