private void ResizeTileset()
{
this.tilesetXnaPanel.Tileset = this._tileset;
Size size = this.tilesetXnaPanel.Size;
int ids = (size.Height / Constants.TILESIZE) * (size.Width / Constants.TILESIZE);
ids += Constants.AUTO_IDS;
this._tileset.priorities.resize(ids);
this._tileset.passages.resize(ids);
this._tileset.terrain_tags.resize(ids);
this.RefreshCurrentObject();
}