GIS经纬度坐标代表现实生活中地球的经纬度坐标,具体代码如下:
using System.Collections; using System.Collections.Generic; using UnityEngine; public class GisPointTo3DPoint : MonoBehaviour { public static GisPointTo3DPoint Instance = null; public Transform firstPoint; //Unity中右下点 public Transform secondPoint;//Unity中左上点 private Vector2 firstSai;//地图中对应的左上经纬度点 private Vector2 secondSai;//地图中对应的右下经纬度点 private float z_offset, x_offset, z_w_offset, x_w_offset; private RaycastHit rayHit; // Use this for initialization private void Start() { if (Instance == null) Instance = this; else if (Instance != this) Destroy(this); InitBasicNum();//初始化参数 } // Update is called once per frame private void Update() { //if (Input.GetMouseButton(0) && Physics.Raycast(Camera.main.ScreenPointToRay(Input.mousePosition), out rayHit, Mathf.Infinity)) //{ // print(getWorldPoint(new Vector2(113.94495f, 22.52078f)).x + "," + getWorldPoint(new Vector2(113.94495f, 22.52078f)).z); // //print(getLatLon(rayHit.point).x + " " + getLatLon(rayHit.point).y); //} } private void InitBasicNum() { firstSai = new Vector2(113.94187f, 22.52283f); secondSai = new Vector2(113.94797f, 22.51844f); z_offset = Mathf.Abs(firstSai.y - secondSai.y);//地图中的维度差 x_offset = Mathf.Abs(firstSai.x - secondSai.x);//地图中的经度差 z_w_offset = Mathf.Abs(firstPoint.localPosition.z - secondPoint.localPosition.z);//unity中的维度差 x_w_offset = Mathf.Abs(firstPoint.localPosition.x - secondPoint.localPosition.x);//unity中的经度差 } public Vector3 getWorldPoint(Vector2 se)//由经纬度得到位置点 { float tempX = Mathf.Abs(se.x - secondSai.x); float tempZ = Mathf.Abs(se.y - firstSai.y); float _tempX = (tempX * x_w_offset / x_offset + secondPoint.localPosition.x); float _tempZ = (tempZ * z_w_offset / z_offset + firstPoint.localPosition.z); return new Vector3(_tempX, 0f, _tempZ); } public Vector3 getLatLon(Vector3 curPoint)//由位置点得到经纬度 { float _z_offset = Mathf.Abs(curPoint.z - secondPoint.localPosition.z) * z_offset / z_w_offset; float _x_offset = Mathf.Abs(curPoint.x - firstPoint.localPosition.x) * x_offset / x_w_offset; float resultX = _x_offset + firstSai.x; float resultZ = _z_offset + secondSai.y; return new Vector2(resultX, resultZ); } }注意:在百度地图上获取的经纬度与实际地理位置差距会比较大,原因是国家规定百度地图上的地理位置与经纬度坐标不能一一对应,会有比较大的误差。所以检校时最好用自己公司的软件校验。