unity 经纬度转世界坐标
时间: 2023-11-12 13:06:08 浏览: 273
在Unity中,可以使用以下代码将经纬度转换为世界坐标:
```csharp
using UnityEngine;
public class GPSToWorldPosition : MonoBehaviour
{
// 地球半径
private const float EARTH_RADIUS = 6378137.0f;
// 经度范围
private const float LONGITUDE_MIN = -180.0f;
private const float LONGITUDE_MAX = 180.0f;
// 纬度范围
private const float LATITUDE_MIN = -90.0f;
private const float LATITUDE_MAX = 90.0f;
// 将经纬度转换为世界坐标
public static Vector3 GPSToWorldPosition(float latitude, float longitude)
{
// 将经纬度转换为弧度
float latRad = Mathf.Clamp(latitude, LATITUDE_MIN, LATITUDE_MAX) * Mathf.Deg2Rad;
float longRad = Mathf.Clamp(longitude, LONGITUDE_MIN, LONGITUDE_MAX) * Mathf.Deg2Rad;
// 计算地球半径在当前纬度下的长度
float earthRadiusAtLatitude = EARTH_RADIUS * Mathf.Cos(latRad);
// 计算世界坐标值
float x = earthRadiusAtLatitude * Mathf.Cos(longRad);
float y = EARTH_RADIUS * Mathf.Sin(latRad);
float z = earthRadiusAtLatitude * Mathf.Sin(longRad);
return new Vector3(x, y, z);
}
}
```
使用方法:
```csharp
// 将纬度 39.9042 度,经度 116.4074 度转换为世界坐标
Vector3 position = GPSToWorldPosition.GPSToWorldPosition(39.9042f, 116.4074f);
```
注意:这个方法只是一个简单示例,仅用于参考。在实际应用中,需要考虑更多因素,如地球的椭球形状等。
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