问题描述
我了解如何获取2个CLLocations之间的距离.我需要确定从一个CLLocation到另一个CLLocation的广义罗盘方位(N，NE，E等).
I understand how to get the distance between 2 CLLocations. I need to determine the generalized compass bearing (N, NE, E etc.) from a CLLocation to another CLLocation.
在我用haversine公式实现某种推论之前，您是否发现有一个通用的开源库或代码片段可以解决使用或不使用haversine的问题?
Before I implement something to derive the bearing with the haversine formula is there a generally adapted open source library or code fragment that you've found solves this problem with or without using haversine?
谢谢！
推荐答案
我使用了可移动的类型脚本-余弦的余弦和球面定律都可用.这些代码示例都是用JavaScript编写的，但是它们很容易转换为C或Objective C.
I've used some of the snippets available from Movable Type Scripts - both haversine and spherical law of cosines available. The code examples are all in JavaScript, but they translate very easily to C or Objective C.
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