public void OnPhotoBagChanged()
{
App.Current.Dispatcher.Invoke((Action) delegate // <--- HERE
{
PhotoCollection.Clear();
PhotoCollection.AddRange(PhotoBag);
});
}
/// <summary>
/// This method takes a bounding box and returns
/// Photocollection covering the bounding box from
/// cache or from downloaded data
/// </summary>
/// <param name="west"></param>
/// <param name="south"></param>
/// <param name="east"></param>
/// <param name="north"></param>
/// <returns></returns>
private PhotoCollection GetPhotoCollection(double west, double south
, double east, double north)
{
PhotoCollection collection = new PhotoCollection();
double tileSize = 10.0;
/*
* //base the tile size on the max viewing distance
* double maxDistance = m_maxdistance;// Math.Sqrt(m_maximumDistanceSq);
*
* double factor = maxDistance / m_world.EquatorialRadius;
* // True view range
* if (factor < 1)
* tileSize = Angle.FromRadians(Math.Abs(Math.Asin(maxDistance / m_world.EquatorialRadius)) * 2).Degrees;
* else
* tileSize = Angle.FromRadians(Math.PI).Degrees;
*
* tileSize = (180 / (int)(180 / tileSize));
*
* if (tileSize == 0)
* tileSize = 0.1;
*/
//Log.Write(Log.Levels.Debug, string.Format("TS: {0} -> {1}", name, tileSize));
//not working for some reason...
//int startRow = MathEngine.GetRowFromLatitude(south, tileSize);
//int endRow = MathEngine.GetRowFromLatitude(north, tileSize);
//int startCol = MathEngine.GetColFromLongitude(west, tileSize);
//int endCol = MathEngine.GetColFromLongitude(east, tileSize);
double currentSouth = -90;
//for (int row = 0; row <= endRow; row++)
XmlSerializer serializer = new XmlSerializer(typeof(PhotoCollection));
while (currentSouth < 90)
{
double currentNorth = currentSouth + tileSize;
if (currentSouth > north || currentNorth < south)
{
currentSouth += tileSize;
continue;
}
double currentWest = -180;
while (currentWest < 180)
// for (int col = startCol; col <= endCol; col++)
{
double currentEast = currentWest + tileSize;
if (currentWest > east || currentEast < west)
{
currentWest += tileSize;
continue;
}
if (!Directory.Exists(m_cachedir))
{
Directory.CreateDirectory(m_cachedir);
}
string collectionFilename = m_cachedir
+ currentEast + "_"
+ currentWest + "_"
+ currentNorth + "_"
+ currentSouth + ".xml";
PhotoCollection currentPhotoCollection;
if (File.Exists(collectionFilename))
{
currentPhotoCollection = (PhotoCollection)serializer.Deserialize(
new FileStream(collectionFilename, FileMode.Open));
}
else
{
searchOptions.BoundaryBox = new BoundaryBox(currentWest, currentSouth,
currentEast, currentNorth);
Photos photos = flickr.PhotosSearch(searchOptions);
currentPhotoCollection = photos.PhotoCollection;
serializer.Serialize(new FileStream(
collectionFilename, FileMode.Create), currentPhotoCollection);
}
collection.AddRange(currentPhotoCollection);
currentWest += tileSize;
}
currentSouth += tileSize;
}
return(collection);
}