public static CgfChunkHeader Read(BinaryReader br)
{
var header = new CgfChunkHeader();
header.chunkType = (CgfChunkType)br.ReadInt32();
header.chunkVersion = br.ReadInt32();
header.chunkOffset = br.ReadInt32();
header.chunkId = br.ReadInt32();
return(header);
}
private void Load(byte[] rawBytes)
{
m_originalFileBytes = rawBytes;
m_chunkHeaders = new List <CgfChunkHeader>();
using (var meshInputStream = new BinaryReader(new MemoryStream(m_originalFileBytes)))
{
byte[] signature = meshInputStream.ReadBytes(8);
if (signature[0] != 0x4E || signature[1] != 0x43 || signature[2] != 0x41 || signature[3] != 0x69 ||
signature[4] != 0x6F || signature[5] != 0x6E || signature[6] != 0x00 || signature[7] != 0x00) // NCAion
{
throw new IOException("Wrong signature");
}
int fileType = meshInputStream.ReadInt32();
if ((uint)fileType == 0xFFFF0001) // animation data
{
throw new InvalidOperationException("todo"); // System.out.println("Animation data");
}
if ((uint)fileType != 0xFFFF0000) // static model
{
throw new IOException("Wrong filetype");
}
meshInputStream.ReadInt32(); // unknown data
int tableOffset = meshInputStream.ReadInt32();
// Move to the chunks table
meshInputStream.BaseStream.Seek(tableOffset, SeekOrigin.Begin);
int chunksCount = meshInputStream.ReadInt32();
for (int i = 0; i < chunksCount; i++)
{
var chunkHeader = CgfChunkHeader.Read(meshInputStream);
m_chunkHeaders.Add(chunkHeader);
}
}
for (int i = 0; i < m_chunkHeaders.Count; i++)
{
if (m_chunkHeaders[i].chunkType == CgfChunkType.Material)
{
m_materials.Add(i, LoadMaterialData(i));
}
}
// Create NodeData items
var flatNodes = new List <NodeData>();
for (int i = 0; i < m_chunkHeaders.Count; i++)
{
if (m_chunkHeaders[i].chunkType == CgfChunkType.Node)
{
flatNodes.Add(GetNodeData(i));
}
}
// TODO - add check to ensure all nodes are accounted for
// Build node tree. For each node, find the parent (or root) and add it to its parent's children.
foreach (var node in flatNodes)
{
if (node.parentId != -1)
{
foreach (var p in flatNodes)
{
if (p.chunkId == node.parentId)
{
if (p.Children == null)
{
p.Children = new List <NodeData>();
}
p.Children.Add(node);
break;
}
}
}
else
{
Nodes.Add(node); // node is top level
}
}
}