internal static IEnumerable <ImageCollectionTile> GenerateCollectionTiles(
IEnumerable <int> ids,
int levelSize
)
{
var imagesInEachDimension = NumberOfImagesInEachDimension(levelSize);
var imagesPerTile = imagesInEachDimension * imagesInEachDimension;
var mortonNumber = 0;
var imagesThisTile = 0;
var currentRow = 0;
var currentColumn = 0;
var idsForTile = new List <int> ();
var startingMortonNumber = 0;
foreach (var id in ids)
{
idsForTile.Add(id);
mortonNumber++;
imagesThisTile++;
if (imagesThisTile == imagesPerTile)
{
var imageCollectionTile =
new ImageCollectionTile(currentRow, currentColumn, startingMortonNumber, idsForTile);
yield return(imageCollectionTile);
startingMortonNumber = mortonNumber;
imagesThisTile = 0;
var point = MortonLayout.Decode(mortonNumber);
currentColumn = point.X / imagesInEachDimension;
currentRow = point.Y / imagesInEachDimension;
idsForTile.Clear();
}
}
if (imagesThisTile > 0)
{
var imageCollectionTile =
new ImageCollectionTile(currentRow, currentColumn, startingMortonNumber, idsForTile);
yield return(imageCollectionTile);
}
}
internal static IEnumerable<ImageCollectionTile> GenerateCollectionTiles (
IEnumerable<int> ids,
int levelSize
)
{
var imagesInEachDimension = NumberOfImagesInEachDimension (levelSize);
var imagesPerTile = imagesInEachDimension * imagesInEachDimension;
var mortonNumber = 0;
var imagesThisTile = 0;
var currentRow = 0;
var currentColumn = 0;
var idsForTile = new List<int> ();
var startingMortonNumber = 0;
foreach (var id in ids)
{
idsForTile.Add (id);
mortonNumber++;
imagesThisTile++;
if (imagesThisTile == imagesPerTile)
{
var imageCollectionTile =
new ImageCollectionTile (currentRow, currentColumn, startingMortonNumber, idsForTile);
yield return imageCollectionTile;
startingMortonNumber = mortonNumber;
imagesThisTile = 0;
var point = MortonLayout.Decode (mortonNumber);
currentColumn = point.X / imagesInEachDimension;
currentRow = point.Y / imagesInEachDimension;
idsForTile.Clear ();
}
}
if (imagesThisTile > 0)
{
var imageCollectionTile =
new ImageCollectionTile (currentRow, currentColumn, startingMortonNumber, idsForTile);
yield return imageCollectionTile;
}
}