/// <summary>
/// The download the coroutine.
/// </summary>
/// <returns>The coroutine.</returns>
private IEnumerator DownloadCoroutine()
{
WWW www = null;
bool cacheHit = this.Cached;
if (cacheHit)
{
www = new WWW("file:///" + this.cacheFileName);
}
else
{
www = new WWW(url);
// Debug.Log(url);
}
yield return(www);
if (String.IsNullOrEmpty(www.error) && www.text.Contains("404 Not Found") == false)
{
Texture2D texture = new Texture2D(1, 1, TextureFormat.ARGB32, true);
www.LoadImageIntoTexture(texture);
if (cacheHit == false)
{
byte[] bytes = www.bytes;
FileStream fs = new FileStream(this.cacheFileName, FileMode.Create, FileAccess.Write, FileShare.None, 4096, true);
fs.BeginWrite(bytes, 0, bytes.Length, new AsyncCallback(EndWriteCallback), new AsyncInfo(this, fs));
}
tile.SetTexture(texture);
}
else
{
this.error = true;
}
}
/// <summary>
/// Requests the tile's texture and assign it.
/// </summary>
/// <param name="tileX">Tile x.</param>
/// <param name="tileY">Tile y.</param>
/// <param name="roundedZoom">Rounded zoom.</param>
/// <param name="tile">Tile.</param>
protected override void RequestTile (int tileX, int tileY, int roundedZoom, TileBehaviour tile)
{
if (db == null) {
throw new NullReferenceException ("db");
}
DataTable dt = db.ExecuteQuery ("SELECT tile_data FROM tiles WHERE zoom_level=" + roundedZoom + " AND tile_column=" + tileX + " AND tile_row=" + tileY);
if (dt.Rows.Count == 0) {
#if DEBUG_LOG
Debug.LogWarning("WARNING: no rows in MBTiles db for tile: " + tileX + "," + tileY + "," + roundedZoom);
#endif
return;
}
Texture2D tex = new Texture2D ((int)Map.TileResolution, (int)Map.TileResolution);
if (tex.LoadImage ((byte[])dt.Rows [0] ["tile_data"]))
tile.SetTexture (tex);
else {
#if DEBUG_LOG
Debug.LogError("ERROR: MBTilesLayer.RequestTile: couldn't load image for: " + tileX + "," + tileY + "," + roundedZoom);
#endif
}
}
/// <summary>
/// The download the coroutine.
/// </summary>
/// <returns>The coroutine.</returns>
private IEnumerator DownloadCoroutine()
{
WWW www = null;
string ext = Path.GetExtension(url);
if (ext.Contains("?"))
{
ext = ext.Substring(0, ext.IndexOf('?'));
}
if (cached && File.Exists(Application.temporaryCachePath + "/" + this.guid + ext))
{
www = new WWW("file:///" + Application.temporaryCachePath + "/" + this.guid + ext);
#if DEBUG_LOG
Debug.Log("DEBUG: TileDownloader.DownloadCoroutine: loading tile from cache: url: " + www.url);
#endif
}
else
{
www = new WWW(url);
#if DEBUG_LOG
Debug.Log("DEBUG: TileDownloader.DownloadCoroutine: loading tile from provider: url: " + www.url
+ "(cached: " + cached + ")"
);
#endif
}
yield return(www);
#if DEBUG_PROFILE
UnitySlippyMap.Profiler.Begin("TileDownloader.TileEntry.DownloadCoroutine");
#endif
#if DEBUG_PROFILE
UnitySlippyMap.Profiler.Begin("www error test");
#endif
if (String.IsNullOrEmpty(www.error) && www.text.Contains("404 Not Found") == false)
{
#if DEBUG_PROFILE
UnitySlippyMap.Profiler.End("www error test");
#endif
#if DEBUG_PROFILE
UnitySlippyMap.Profiler.Begin("www.texture");
#endif
Texture2D texture = new Texture2D(1, 1, TextureFormat.ARGB32, true);
www.LoadImageIntoTexture(texture);
#if DEBUG_PROFILE
UnitySlippyMap.Profiler.End("www.texture");
#endif
#if DEBUG_PROFILE
UnitySlippyMap.Profiler.Begin("is cached?");
#endif
if (this.cached == false)
{
#if DEBUG_PROFILE
UnitySlippyMap.Profiler.End("is cached?");
#endif
#if DEBUG_PROFILE
UnitySlippyMap.Profiler.Begin("set TileEntry members");
#endif
byte[] bytes = www.bytes;
this.size = bytes.Length;
this.guid = Guid.NewGuid().ToString();
#if DEBUG_PROFILE
UnitySlippyMap.Profiler.End("set TileEntry members");
#endif
#if DEBUG_PROFILE
UnitySlippyMap.Profiler.Begin("new FileStream & FileStream.BeginWrite");
#endif
FileStream fs = new FileStream(Application.temporaryCachePath + "/" + this.guid + ext, FileMode.Create, FileAccess.Write, FileShare.None, 4096, true);
fs.BeginWrite(bytes, 0, bytes.Length, new AsyncCallback(EndWriteCallback), new AsyncInfo(this, fs));
#if DEBUG_PROFILE
UnitySlippyMap.Profiler.End("new FileStream & FileStream.BeginWrite");
#endif
#if DEBUG_LOG
Debug.Log("DEBUG: TileEntry.DownloadCoroutine: done loading: " + www.url + ", writing to cache: " + fs.Name);
#endif
}
else
{
#if DEBUG_PROFILE
UnitySlippyMap.Profiler.End("is cached?");
#endif
#if DEBUG_LOG
Debug.Log("DEBUG: TileEntry.DownloadCoroutine: done loading from cache: " + www.url + " [" + url + "]");
#endif
}
this.timestamp = (DateTime.Now - new DateTime(1970, 1, 1).ToLocalTime()).TotalSeconds;
#if DEBUG_PROFILE
UnitySlippyMap.Profiler.Begin("Tile.SetTexture");
#endif
tile.SetTexture(texture);
#if DEBUG_PROFILE
UnitySlippyMap.Profiler.End("Tile.SetTexture");
#endif
}
else
{
#if DEBUG_PROFILE
UnitySlippyMap.Profiler.End("www error test");
#endif
this.error = true;
#if DEBUG_LOG
Debug.LogError("ERROR: TileEntry.DownloadCoroutine: done downloading: " + www.url + " with error: " + www.error);
#endif
}
#if DEBUG_PROFILE
UnitySlippyMap.Profiler.End("TileDownloader.TileEntry.DownloadCoroutine");
#endif
}