private void WriteFrameInfo(List <WrittenImageInfo> imageInfos, GafFrameInfo info)
{
var header = new Structures.GafFrameInfo
{
Unknown2 = 0,
Unknown3 = (uint)info.Unknown3, // Cavedog gafs sometimes have a value here but we don't know what it does.
};
if (info.ImageIndex.HasValue)
{
var imageInfo = imageInfos[info.ImageIndex.Value];
header.LayerCount = 0;
header.OriginX = (short)info.OriginX;
header.OriginY = (short)info.OriginY;
header.Width = (ushort)imageInfo.Width;
header.Height = (ushort)imageInfo.Height;
header.Compressed = true;
header.TransparencyIndex = (byte)imageInfo.TransparencyIndex;
header.PtrFrameData = (uint)imageInfo.Pointer;
}
else
{
var rect = info.Layers.Select(layer => new Rect
{
X = -layer.OriginX,
Y = -layer.OriginY,
Width = imageInfos[layer.ImageIndex].Width,
Height = imageInfos[layer.ImageIndex].Height
}).Aggregate(Rect.Merge);
header.LayerCount = (ushort)info.Layers.Count;
header.OriginX = (short)(-rect.X);
header.OriginY = (short)(-rect.Y);
header.Width = (ushort)rect.Width;
header.Height = (ushort)rect.Height;
header.Compressed = false;
header.TransparencyIndex = 9;
header.PtrFrameData = (uint)(writer.BaseStream.Position + 24);
}
header.Write(writer);
if (!info.ImageIndex.HasValue)
{
var startPos = writer.BaseStream.Position + (4 * info.Layers.Count);
for (var i = 0; i < info.Layers.Count; ++i)
{
writer.Write((uint)(startPos + (24 * i)));
}
var layerPointers = new List <long>();
foreach (var layer in info.Layers)
{
WriteLayerInfo(imageInfos, layer);
}
}
}
private void WriteLayerInfo(List <WrittenImageInfo> imageInfos, GafLayerInfo info)
{
var imageInfo = imageInfos[info.ImageIndex];
var header = new Structures.GafFrameInfo
{
OriginX = (short)info.OriginX,
OriginY = (short)info.OriginY,
Unknown2 = 0,
Unknown3 = (uint)info.Unknown3, // Cavedog gafs sometimes have a value here but we don't know what it does.
LayerCount = 0,
Width = (ushort)imageInfo.Width,
Height = (ushort)imageInfo.Height,
Compressed = true,
TransparencyIndex = (byte)imageInfo.TransparencyIndex,
PtrFrameData = (uint)imageInfo.Pointer,
};
header.Write(writer);
}