internal static Bitmap CreateCollectionTile(IEnumerable <Bitmap> componentBitmaps, int levelSize)
{
var result = new Bitmap(CollectionTileSize, CollectionTileSize);
using (var graphics = Graphics.FromImage(result))
{
graphics.InterpolationMode = InterpolationMode.Default;
var mortonNumber = 0;
foreach (var itemBitmap in componentBitmaps)
{
var mortonLocation = MortonLayout.Decode(mortonNumber);
var destRect = new Rectangle(
mortonLocation.X * levelSize,
mortonLocation.Y * levelSize,
levelSize,
levelSize
);
graphics.DrawImage(
itemBitmap,
destRect,
0,
0,
levelSize,
levelSize,
GraphicsUnit.Pixel
);
mortonNumber++;
}
}
return(result);
}
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);
}
}
