void DecodeDirection(int directionIndex)
{
UnityEngine.Profiling.Profiler.BeginSample("DCC.DecodeDirection");
int internalIndex = DirectionMapping.MapToInternal(header.directionCount, directionIndex);
sprites[directionIndex] = new Sprite[header.framesPerDir];
var bitReader = new BitReader(bytes, header.dirOffset[internalIndex] * 8);
Direction dir = new Direction();
ReadDirection(bitReader, dir);
int optionalBytesSum = 0;
dir.frames = new Frame[header.framesPerDir];
for (int f = 0; f < header.framesPerDir; ++f)
{
Frame frame = new Frame();
dir.frames[f] = frame;
ReadFrame(bitReader, dir, frame);
optionalBytesSum += frame.optionalBytes;
if (frame.bottomUp != 0)
{
Debug.LogWarning("BottomUp frames are not implemented yet (" + filename + ")");
continue;
}
if (f == 0)
{
dir.box = frame.box;
}
else
{
dir.box.xMin = Mathf.Min(dir.box.xMin, frame.box.xMin);
dir.box.yMin = Mathf.Min(dir.box.yMin, frame.box.yMin);
dir.box.xMax = Mathf.Max(dir.box.xMax, frame.box.xMax);
dir.box.yMax = Mathf.Max(dir.box.yMax, frame.box.yMax);
}
}
if (optionalBytesSum != 0)
{
Debug.LogWarning("optionalBytesSum != 0, not tested");
}
bitReader.ReadBits(optionalBytesSum * 8);
Streams streams = new Streams();
ReadStreamsInfo(bitReader, dir, bytes, streams);
FrameBuffer frameBuffer = CreateFrameBuffer(dir.box); // dcc_prepare_buffer_cells
FillPixelBuffer(header, frameBuffer, dir, streams); // dcc_fill_pixel_buffer
MakeFrames(header, dir, frameBuffer, streams, textures, sprites[directionIndex]); // dcc_make_frames
UnityEngine.Profiling.Profiler.EndSample();
}
private Direction ReadFrames(Stream stream, BinaryReader reader, int dirIndex)
{
int internalIndex = DirectionMapping.MapToInternal(directionCount, dirIndex);
var dir = new Direction();
dir.frames = new Frame[framesPerDirection];
dir.sprites = new Sprite[framesPerDirection];
int maxWidth = 0;
int maxHeight = 0;
for (int frameIndex = 0; frameIndex < framesPerDirection; frameIndex++)
{
int offset = offsets[internalIndex * framesPerDirection + frameIndex];
stream.Seek(offset, SeekOrigin.Begin);
var frame = new Frame();
reader.ReadInt32(); // skip
frame.width = reader.ReadInt32();
frame.height = reader.ReadInt32();
frame.offsetX = reader.ReadInt32();
frame.offsetY = reader.ReadInt32();
reader.ReadInt32(); // skip
reader.ReadInt32(); // skip
frame.dataSize = reader.ReadInt32();
frame.dataOffset = (int)stream.Position;
dir.frames[frameIndex] = frame;
maxWidth = Mathf.Max(maxWidth, frame.width);
maxHeight = Mathf.Max(maxHeight, frame.height);
}
TexturePacker packer;
int padding = framesPerDirection > 1 ? 2 : 0;
if (textureSize == -1)
{
int textureWidth = Mathf.NextPowerOfTwo((maxWidth + padding) * framesPerDirection);
int textureHeight = Mathf.NextPowerOfTwo(maxHeight + padding);
textureWidth = Mathf.Min(1024, textureWidth);
packer = new TexturePacker(textureWidth, textureHeight, padding);
}
else
{
packer = new TexturePacker(textureSize, textureSize, padding);
}
DrawFrames(dir, packer);
return(dir);
}