void GetTileRect(int zoomLevel, out int x0, out int y0, out int x1, out int y1)
{
if (worldArea == RestrictMode.Restricted)
{
Conversion.GetTileFromLatLon(zoomLevel, latMin, lonMin, out x0, out y1);
Conversion.GetTileFromLatLon(zoomLevel, latMax, lonMax, out x1, out y0);
}
else
{
x0 = y0 = 0;
x1 = y1 = (int)Mathf.Pow(2, zoomLevel) - 1;
}
}
int GetTileZoomLevel()
{
// Get screen dimensions of central tile
int zoomLevel0 = 1;
int zoomLevel1 = TILE_MAX_ZOOM_LEVEL;
int zoomLevel = TILE_MIN_ZOOM_LEVEL;
Vector2 latLon = Conversion.GetLatLonFromSpherePoint(GetCurrentMapLocation());
int xTile, yTile;
currentTileSize = _tileSize > TILE_MIN_SIZE ? _tileSize : TILE_MIN_SIZE;
currentTileSize *= (3.0f - _tileResolutionFactor);
float dist = 0;
for (int i = 0; i < 5; i++)
{
zoomLevel = (zoomLevel0 + zoomLevel1) / 2;
Conversion.GetTileFromLatLon(zoomLevel, latLon.x, latLon.y, out xTile, out yTile);
Vector2 latLonTL = Conversion.GetLatLonFromTile(xTile, yTile, zoomLevel);
Vector2 latLonBR = Conversion.GetLatLonFromTile(xTile + 0.99f, yTile + 0.99f, zoomLevel);
Vector3 spherePointTL = Conversion.GetSpherePointFromLatLon(latLonTL);
Vector3 spherePointBR = Conversion.GetSpherePointFromLatLon(latLonBR);
Vector3 wposTL = currentCamera.WorldToScreenPoint(transform.TransformPoint(spherePointTL));
Vector3 wposBR = currentCamera.WorldToScreenPoint(transform.TransformPoint(spherePointBR));
dist = Mathf.Max(Mathf.Abs(wposBR.x - wposTL.x), Mathf.Abs(wposTL.y - wposBR.y));
if (dist > currentTileSize)
{
zoomLevel0 = zoomLevel;
}
else
{
zoomLevel1 = zoomLevel;
}
}
if (dist > currentTileSize)
{
zoomLevel++;
}
zoomLevel = Mathf.Clamp(zoomLevel, TILE_MIN_ZOOM_LEVEL, TILE_MAX_ZOOM_LEVEL);
return(zoomLevel);
}