private async Task <byte[]> GenerateBattlePreviewAsync()
{
int centerX = 0;
int centerY = 0;
int previewHalfHeight = 150;
int previewHalfWidth = 100;
int chunkXFrom = (int)Math.Max(Math.Ceiling(((decimal)(centerX - previewHalfWidth)) / _battle.Settings.ChunkWidth), _battle.Settings.MinWidthIndex);
int chunkYFrom = (int)Math.Max(Math.Ceiling(((decimal)(centerY - previewHalfHeight)) / _battle.Settings.ChunkHeight), _battle.Settings.MinHeightIndex);
int chunkXTo = (int)Math.Min(Math.Floor(((decimal)(centerX + previewHalfWidth)) / _battle.Settings.ChunkWidth), _battle.Settings.MaxWidthIndex);
int chunkYTo = (int)Math.Min(Math.Floor(((decimal)(centerY + previewHalfHeight)) / _battle.Settings.ChunkHeight), _battle.Settings.MaxHeightIndex);
var chunks = new List <(int x, int y, byte[] image)>((chunkXTo - chunkXFrom) * (chunkYTo - chunkYFrom));
for (int i = chunkXFrom; i <= chunkXTo; i++)
{
for (int j = chunkYFrom; j <= chunkYTo; j++)
{
var chunkGrain = this.GrainFactory.GetGrain <IChunkGrain>(GuidExtensions.ToGuid(_battleId, i, j));
var chunkState = await chunkGrain.GetStateAsync();
chunks.Add((i, j, chunkState.Image));
}
}
return(_imageProcessor.GenerateImageFromChunks(
chunks: chunks,
chunkHeight: _battle.Settings.ChunkHeight,
chunkWidth: _battle.Settings.ChunkWidth,
previewHeight: previewHalfHeight,
previewWidth: previewHalfWidth,
centerX: centerX,
centerY: centerY));
}
public void ImageProcessor_Can_GenerateImageFromChunks()
{
var image = _imageProcessor.GetBytesFromPixels(_imageProcessor.GetDefaultImage(100, 100, 4278190080), 100, 100);
var chunks = new List <(int x, int y, byte[] image)>
{
(0, 0, image),
(1, 0, image),
(2, 0, image)
};
var previewImage = _imageProcessor.GenerateImageFromChunks(chunks, 100, 100, 100, 150, 100, 50);
Assert.Equal(45613623U, XXHash.Hash32(previewImage));
}