iphone – 将地理坐标转换为CGPoint并在UIView中绘制线条

概述我有一个CGPoints集合,通过转换从Core Location框架工作委托方法获得的地理坐标获得.该集合是一组起点/终点. 我从CoreLocation委托方法获取坐标 CLLocationCoordinate2D coordinate;CLLocationDegrees latitude;CLLocationDegrees longitude;- (void)locationMana 我有一个CGPoints集合,通过转换从Core Location框架工作委托方法获得的地理坐标获得.该集合是一组起点/终点.

我从CoreLocation委托方法获取坐标

CLLocationCoordinate2D coordinate;CLLocationdegrees latitude;CLLocationdegrees longitude;- (voID)locationManager:(CLLocationManager *)manager dIDUpdateLocations:(NSArray *)locations{CLLocation *location = [locations lastObject];latitude = location.coordinate.latitude;longitude = location.coordinate.longitude;}

我正在将当前纬度和经度转换为CGPoint,如下所示

CGPoint startPoint = [mapVIEw convertCoordinate:retrIEvedCoordinate topointToVIEw:self.vIEw];CGPoint endPoint = [mapVIEw convertCoordinate:retrIEvedEndCoordinate topointToVIEw:self.vIEw];

我需要根据集合中的值在我的UIVIEw上绘制线条.如何正确调整/缩放,关于UIVIEw的CGPoints. UIVIEw帧大小为(0,768,1004).

这是我所做的扩展

- (CGPoint)convertLatLongCoord:(CGPoint)latLong {CGSize screenSize = [UIScreen mainScreen].applicationFrame.size;CGfloat SCALE = MIN(screenSize.wIDth,screenSize.height) / (2.0 * EARTH_RADIUS);CGfloat OFFSET = MIN(screenSize.wIDth,screenSize.height) / 2.0;CGfloat x = EARTH_RADIUS * cos(latLong.x) * cos(latLong.y) * SCALE + OFFSET;CGfloat y = EARTH_RADIUS * cos(latLong.x) * sin(latLong.y) * SCALE + OFFSET;return CGPointMake(x,y);}

其中#define EARTH_RADIUS 6371

线条图不正确,因为某处转换为CGPoint可能是错误的.我究竟做错了什么.需要帮助.

解决方法 要将CLLocationCoordinate2D转换为CGPoint,请在此处查看答案 – https://stackoverflow.com/a/37276779/2697425 总结

以上是内存溢出为你收集整理的iphone – 将地理坐标转换为CGPoint并在UIView中绘制线条全部内容，希望文章能够帮你解决iphone – 将地理坐标转换为CGPoint并在UIView中绘制线条所遇到的程序开发问题。

如果觉得内存溢出网站内容还不错，欢迎将内存溢出网站推荐给程序员好友。