IReadOnlyTexture <byte> Write(IReadOnlyTexture <byte> existing, AssetInfo info, AssetMapping mapping, ISerializer s, IJsonUtil jsonUtil)
{
if (existing == null)
{
throw new ArgumentNullException(nameof(existing));
}
int width = info.Width;
int height = info.Height;
if (width == 0 || height == 0)
{
throw new ArgumentException("Explicit width and height must be defined when using FontSpriteLoader", nameof(info));
}
var repacked = new SimpleTexture <byte>(existing.Id, existing.Name, width, height * existing.Regions.Count);
for (int i = 0; i < existing.Regions.Count; i++)
{
var oldFrame = existing.GetRegionBuffer(i);
repacked.AddRegion(0, i * height, width, height);
BlitUtil.BlitDirect(oldFrame, repacked.GetMutableRegionBuffer(i));
}
var font = _loader.Serdes(repacked, info, mapping, s, jsonUtil);
return(font == null ? null : existing);
}
static IReadOnlyTexture <byte> Read(AssetInfo info, ISerializer s)
{
ushort width = s.UInt16("Width", 0);
ushort height = s.UInt16("Height", 0);
int something = s.UInt8(null, 0);
ApiUtil.Assert(something == 0);
byte frameCount = s.UInt8("Frames", 1);
var result = new SimpleTexture <byte>(info.AssetId, width, height * frameCount);
for (int i = 0; i < frameCount; i++)
{
byte[] frameBytes = s.Bytes("Frame" + i, null, width * height);
result.AddRegion(0, i * height, width, height);
BlitUtil.BlitDirect(
new ReadOnlyImageBuffer <byte>(width, height, width, frameBytes),
result.GetMutableRegionBuffer(i));
}
s.Check();
return(result);
}
public static IReadOnlyTexture <T> CombineFramesVertically <T>(IAssetId id, IList <IReadOnlyTexture <T> > frames) where T : unmanaged
{
if (frames == null)
{
throw new ArgumentNullException(nameof(frames));
}
int[] yOffsets = new int[frames.Count];
int currentY = 0;
int totalWidth = 0;
for (int i = 0; i < frames.Count; i++)
{
yOffsets[i] = currentY;
currentY += frames[i].Height;
if (frames[i].Width > totalWidth)
{
totalWidth = frames[i].Width;
}
}
if (totalWidth == 0 || currentY == 0)
{
throw new InvalidOperationException($"Tried to combine frames, but the width or height was 0");
}
var result = new SimpleTexture <T>(id, totalWidth, currentY);
for (int i = 0; i < frames.Count; i++)
{
var fy = yOffsets[i];
var frame = frames[i];
result.AddRegion(0, fy, frame.Width, frame.Height);
BlitDirect(frame.GetLayerBuffer(0), result.GetMutableRegionBuffer(i));
}
return(result);
}