public void WriteBAHeader(bool compressed, List <B45ChunkDataBase> chunkDataList)
{
fs = new FileStream(fileName, FileMode.Create, FileAccess.Write, FileShare.Write);
byte[] tmp = new byte[2];
if (compressed)
{
// compressed
tmp[1] = (byte)(tmp[1] | 0x1);
}
else
{
}
fs.Write(tmp, 0, 2);
byte[] headerBuffer = new byte[FileHeaderOffsets.headerLength];
headerBuffer[FileHeaderOffsets.cellLength] = fileHeader.cellLength;
headerBuffer[FileHeaderOffsets.chunkType] = fileHeader.chunkType;
headerBuffer[FileHeaderOffsets.chunkSize] = fileHeader.chunkSize;
headerBuffer[FileHeaderOffsets.chunkPrefix] = fileHeader.chunkPrefix;
headerBuffer[FileHeaderOffsets.chunkPostfix] = fileHeader.chunkPostfix;
ByteArrayHelper.ushort_to(headerBuffer, FileHeaderOffsets.chunkCountX, fileHeader.chunkCountX);
ByteArrayHelper.ushort_to(headerBuffer, FileHeaderOffsets.chunkCountY, fileHeader.chunkCountY);
ByteArrayHelper.ushort_to(headerBuffer, FileHeaderOffsets.chunkCountZ, fileHeader.chunkCountZ);
ByteArrayHelper.ushort_to(headerBuffer, FileHeaderOffsets.voxelRes, fileHeader.voxelRes);
headerBuffer[FileHeaderOffsets.chunkOffsetDesc] = fileHeader.chunkOffsetDesc;
fs.Write(headerBuffer, 0, (int)FileHeaderOffsets.headerLength);
//chkOfsUnitLen = fileHeader.chunkOffsetDesc & 0x7;
chkOfsInVectorForm = ((fileHeader.chunkOffsetDesc >> 4) > 0);
int chkOfsLen = 4 + chunkDataList.Count * ChunkOffsetStructOffsets.length;
byte[] chunkOffsetBinaryBuffer = new byte[chkOfsLen];
chunkRawDataLength = fileHeader.chunkSize * fileHeader.chunkSize * fileHeader.chunkSize * fileHeader.cellLength;
if (chkOfsInVectorForm)
{
// write the chunk count
ByteArrayHelper.int_to(chunkOffsetBinaryBuffer, 0, chunkDataList.Count);
chunkOffsets = new int[chunkDataList.Count + 1];
// calculate the chunk offsets first
chunkOffsets[0] = 0;
int i;
int lastChunkLength;
for (i = 1; i <= chunkDataList.Count; i++)
{
lastChunkLength = chunkDataList[i - 1].IsHollow ? ChunkBAHeaderOffsets.headerLength + fileHeader.cellLength : ChunkBAHeaderOffsets.headerLength + chunkRawDataLength;
chunkOffsets[i] = chunkOffsets[i - 1] + lastChunkLength;
}
// write the last length to the extra offset slot for write chunk data reference.
// write the offsets into the buffer. phase 1
for (i = 0; i < chunkDataList.Count; i++)
{
B45ChunkDataBase cd = chunkDataList[i];
// write the chunk pos
// in "4 + i * (chkOfsUnitLen * 3 + 12)" the 4 is the length of the chunkcount int at the beginning
ByteArrayHelper.IntVector3_to(chunkOffsetBinaryBuffer, 4 + i * ChunkOffsetStructOffsets.length, cd._chunkPos);
// write the chunk offset relative to the end of the offset buffer
ByteArrayHelper.int_to(chunkOffsetBinaryBuffer, 4 + i * ChunkOffsetStructOffsets.length + ChunkOffsetStructOffsets.Offset, chunkOffsets[i]);
// write the svn number
ByteArrayHelper.int_to(chunkOffsetBinaryBuffer, 4 + i * ChunkOffsetStructOffsets.length + ChunkOffsetStructOffsets.SVN_key_ba, cd.svn_key_ba);
}
fs.Write(chunkOffsetBinaryBuffer, 0, chkOfsLen);
}
else
{
// it's the chunk offset full listing mode
}
// phase 2
WriteChunkData(chunkDataList);
fs.Close();
}
public void WriteUVHeader(bool compressed, List <B45ChunkDataBase> chunkDataList)
{
fs = new FileStream(fileName, FileMode.Create, FileAccess.Write, FileShare.Write);
byte headerByte = chunkOffsetDesc;
if (compressed)
{
// compressed
headerByte = (byte)(headerByte | 32);
}
else
{
}
fs.WriteByte(headerByte);
//chkOfsUnitLen = chunkOffsetDesc & 0x7;
chkOfsInVectorForm = ((chunkOffsetDesc >> 4) > 0);
int chkOfsLen = 4 + chunkDataList.Count * ChunkOffsetStructOffsets.length;
byte[] chunkOffsetBinaryBuffer = new byte[chkOfsLen];
if (chkOfsInVectorForm)
{
// write the chunk count
ByteArrayHelper.int_to(chunkOffsetBinaryBuffer, 0, chunkDataList.Count);
chunkOffsets = new int[chunkDataList.Count + 1];
// calculate the chunk offsets first
chunkOffsets[0] = 0;
int i;
int lastChunkLength;
for (i = 1; i <= chunkDataList.Count; i++)
{
List <UVKeyCount> uvkc = chunkDataList[i - 1].uvVersionKeys;
int uvkc_len = 0;
if (uvkc != null)
{
uvkc_len = uvkc.Count * UVKeyCount.length;
}
List <UpdateVector> uvs = chunkDataList[i - 1].updateVectors;
int uv_len = 0;
if (uvs != null)
{
uv_len = uvs.Count * UpdateVector.length;
}
lastChunkLength = ChunkUVHeaderOffsets.headerLength + uvkc_len + uv_len;
chunkOffsets[i] = chunkOffsets[i - 1] + lastChunkLength;
}
// write the last length to the extra offset slot for write chunk data reference.
// write the offsets into the buffer. phase 1
for (i = 0; i < chunkDataList.Count; i++)
{
B45ChunkDataBase cd = chunkDataList[i];
// write the chunk pos
// in "4 + i * (chkOfsUnitLen * 3 + 12)" the 4 is the length of the chunkcount int at the beginning
ByteArrayHelper.IntVector3_to(chunkOffsetBinaryBuffer, 4 + i * ChunkOffsetStructOffsets.length, cd._chunkPos);
// write the chunk offset relative to the end of the offset buffer
ByteArrayHelper.int_to(chunkOffsetBinaryBuffer, 4 + i * ChunkOffsetStructOffsets.length + ChunkOffsetStructOffsets.Offset, chunkOffsets[i]);
// write the svn number
ByteArrayHelper.int_to(chunkOffsetBinaryBuffer, 4 + i * ChunkOffsetStructOffsets.length + ChunkOffsetStructOffsets.SVN_key, cd.svn_key);
}
fs.Write(chunkOffsetBinaryBuffer, 0, chkOfsLen);
}
else
{
// it's the chunk offset full listing mode
}
// phase 2
WriteUVData(chunkDataList);
fs.Close();
}
