I want to know the real elevation for my markers on the map. Is it possible to read elevation from tiles for a position on map by just providing latitude, longitude and zoom?
I try the following code:
Vector2 center = marker.position;
float unscaledElevation = OnlineMapsElevationManagerBase.GetUnscaledElevation(center.x, center.y); // real elevation value
But the problem is each zoom gives different elevation for my markers. Requesting elevations from tiles would be better?
]]>It is so easy that I believe that you can do it.
If you still have problems implementing this, write again and I will do it for you.
using System.IO;
using UnityEngine;
public class CacheMapboxElevation: MonoBehaviour
{
private string GetTilePath(OnlineMapsTiledElevationManager<OnlineMapsMapboxElevationManager>.Tile tile)
{
return Application.persistentDataPath + "/Elevation Cache/" + tile.zoom + "/" + tile.x + "/" + tile.y + ".png";
}
private void OnDownload(OnlineMapsTiledElevationManager<OnlineMapsMapboxElevationManager>.Tile tile)
{
string path = GetTilePath(tile);
if (!File.Exists(path))
{
OnlineMapsMapboxElevationManager.instance.StartDownloadElevationTile(tile);
return;
}
Texture2D texture = new Texture2D(256, 256);
texture.LoadImage(File.ReadAllBytes(path));
OnlineMapsMapboxElevationManager.instance.SetElevationTexture(tile, texture);
OnlineMapsUtils.Destroy(texture);
Debug.Log("Loaded from cache: " + path);
}
private void OnDownloadSuccess(OnlineMapsTiledElevationManager<OnlineMapsMapboxElevationManager>.Tile tile, OnlineMapsWWW www)
{
string path = GetTilePath(tile);
FileInfo info = new FileInfo(path);
if (!info.Directory.Exists) info.Directory.Create();
File.WriteAllBytes(path, www.bytes);
Debug.Log("Elevation saved: " + path);
}
private void Start()
{
OnlineMapsMapboxElevationManager.instance.OnDownload += OnDownload;
OnlineMapsMapboxElevationManager.instance.OnDownloadSuccess += OnDownloadSuccess;
}
}Please attach a stack trace of the error.
]]>Now works perfectly. A big thank you to Alex.
Would you pleased to describe how you using the codes?Should I attach a script which contains the codes to the map?
]]>