void Loaders::t3DSLoader::ProcessNextKeyFrameChunk(t3DModel *pModel, tChunk *pPreviousChunk)
{
char strKeyFrameObject[50] = {0};
float temp = 0.0f;
m_CurrentChunk = new tChunk;
while (pPreviousChunk->bytesRead < pPreviousChunk->length)
{
ReadChunk(m_CurrentChunk);
switch (m_CurrentChunk->ID)
{
case KEYFRAME_MESH_INFO:
ProcessNextKeyFrameChunk(pModel, m_CurrentChunk);
break;
case KEYFRAME_OBJECT_NAME:
m_CurrentChunk->bytesRead += GetString(strKeyFrameObject);
SetCurrentObject(pModel, strKeyFrameObject);
m_CurrentChunk->bytesRead += fread(gBuffer, 1, m_CurrentChunk->length - m_CurrentChunk->bytesRead, m_FilePointer);
break;
case KEYFRAME_START_AND_END:
m_CurrentChunk->bytesRead += fread(&(pModel->numberOfFrames), 1, 4, m_FilePointer);
m_CurrentChunk->bytesRead += fread(&(pModel->numberOfFrames), 1, 4, m_FilePointer);
break;
case PIVOT:
m_CurrentChunk->bytesRead +=
fread(&(m_CurrentObject->vPivot), 1, sizeof(CVector3), m_FilePointer);
temp = m_CurrentObject->vPivot.y;
m_CurrentObject->vPivot.y = m_CurrentObject->vPivot.z;
m_CurrentObject->vPivot.z = -temp;
break;
case POSITION_TRACK_TAG:
ReadKeyFramePositions(pModel, m_CurrentChunk);
break;
case ROTATION_TRACK_TAG:
ReadKeyFrameRotations(pModel, m_CurrentChunk);
break;
case SCALE_TRACK_TAG:
ReadKeyFrameScales(pModel, m_CurrentChunk);
break;
default:
m_CurrentChunk->bytesRead += fread(gBuffer, 1, m_CurrentChunk->length - m_CurrentChunk->bytesRead, m_FilePointer);
break;
}
pPreviousChunk->bytesRead += m_CurrentChunk->bytesRead;
}
delete m_CurrentChunk;
m_CurrentChunk = pPreviousChunk;
}
int Load3ds::ProcessNextKeyFrameChunk(Chunk * aPreviousChunk)
{
mCurrentChunk = new Chunk;
size_t numberOfBytesRead;
short int lCurrentID, lCurrentParentID;
while (aPreviousChunk->mBytesRead < aPreviousChunk->mLength)
{
ReadChunk(mCurrentChunk);
switch (mCurrentChunk->mID)
{
case KFMESH:
ProcessNextKeyFrameChunk(mCurrentChunk);
break;
case KFHEIRARCHY:
mCurrentChunk->mBytesRead += numberOfBytesRead = fread(&lCurrentID, 1, 2, mFile);
#ifdef __BIG_ENDIAN__
lCurrentID = OSReadSwapInt16(&lCurrentID,0);
#endif
// lCurrentID now contains the ID of the current object being described
// Save this if you want to support an object hierarchy
break;
case KFNAME:
mCurrentChunk->mBytesRead += GetString((char *)mBuffer);
// mBuffer now contains the name of the object whose KF info will
// be described
mCurrentChunk->mBytesRead += numberOfBytesRead = fread(mBuffer, 1, 4, mFile); // useless, ignore
#ifdef __BIG_ENDIAN__
for (int i = 0; i < numberOfBytesRead; i++)
{
static_cast<short *>(mBuffer)[i] = OSReadSwapInt16(&static_cast<short*>(mBuffer)[i],0);
}
#endif
mCurrentChunk->mBytesRead += numberOfBytesRead = fread(&lCurrentParentID, 1, 2, mFile);
#ifdef __BIG_ENDIAN__
lCurrentParentID = OSReadSwapInt16(&lCurrentParentID,0);
#endif
// lCurrentParentID now contains the ID of the parent of the current object
// being described
break;
default: // unrecognized/unsupported chunk
mCurrentChunk->mBytesRead += numberOfBytesRead = fread(mBuffer, 1, mCurrentChunk->mLength - mCurrentChunk->mBytesRead, mFile);
#ifdef __BIG_ENDIAN__
for (int i = 0; i < numberOfBytesRead; i++)
{
static_cast<short *>(mBuffer)[i] = OSReadSwapInt16(&static_cast<short*>(mBuffer)[i],0);
}
#endif
break;
}
aPreviousChunk->mBytesRead += mCurrentChunk->mBytesRead;
}
delete mCurrentChunk;
mCurrentChunk = aPreviousChunk;
return 1;
}
int Load3ds::ProcessNextChunk(Chunk * aPreviousChunk)
{
mCurrentChunk = new Chunk;
size_t numberOfBytesRead;
while (aPreviousChunk->mBytesRead < aPreviousChunk->mLength)
{
// Read next chunk
ReadChunk(mCurrentChunk);
switch (mCurrentChunk->mID)
{
case VERSION:
// Check version (must be 3 or less)
mCurrentChunk->mBytesRead += numberOfBytesRead = fread(mBuffer, 1, mCurrentChunk->mLength - mCurrentChunk->mBytesRead, mFile);
#ifdef __BIG_ENDIAN__
for (int i = 0; i < numberOfBytesRead; i++)
{
static_cast<short *>(mBuffer)[i] = OSReadSwapInt16(&static_cast<short*>(mBuffer)[i],0);
}
#endif
if (*(unsigned short *) mBuffer > 0x03)
exit(1107);
break;
case EDITMATERIAL:
// Proceed to material loading function
ProcessNextMaterialChunk(mCurrentChunk);
break;
case EDIT3DS:
// Check mesh version, then proceed to mesh loading function
ReadChunk(mTempChunk);
mTempChunk->mBytesRead += numberOfBytesRead = fread(mBuffer, 1, mTempChunk->mLength - mTempChunk->mBytesRead, mFile);
#ifdef __BIG_ENDIAN__
for (int i = 0; i < numberOfBytesRead; i++)
{
static_cast<short *>(mBuffer)[i] = OSReadSwapInt16(&static_cast<short*>(mBuffer)[i],0);
}
#endif
mCurrentChunk->mBytesRead += mTempChunk->mBytesRead;
if (mTempChunk->mID != MESHVERSION || *(unsigned short *)mBuffer > 0x03)
exit(1107);
ProcessNextChunk(mCurrentChunk);
break;
case EDITOBJECT:
mCurrentChunk->mBytesRead += GetString((char *)mBuffer);
// mBuffer now contains name of the object to be edited
ProcessNextObjectChunk(mCurrentChunk);
break;
case EDITKEYFRAME:
ProcessNextKeyFrameChunk(mCurrentChunk);
break;
default: // unrecognized/unsupported chunk
mCurrentChunk->mBytesRead += numberOfBytesRead = fread(mBuffer, 1, mCurrentChunk->mLength - mCurrentChunk->mBytesRead, mFile);
#ifdef __BIG_ENDIAN__
for (int i = 0; i < numberOfBytesRead; i++)
{
static_cast<short *>(mBuffer)[i] = OSReadSwapInt16(&static_cast<short*>(mBuffer)[i],0);
}
#endif
break;
}
aPreviousChunk->mBytesRead += mCurrentChunk->mBytesRead;
}
delete mCurrentChunk;
mCurrentChunk = aPreviousChunk;
return 1;
}
void Loaders::t3DSLoader::ProcessNextChunk(t3DModel *pModel, tChunk *pPreviousChunk)
{
t3DObject newObject;
tMaterialInfo newTexture = {0};
int version = 0;
m_CurrentChunk = new tChunk;
while (pPreviousChunk->bytesRead < pPreviousChunk->length)
{
ReadChunk(m_CurrentChunk);
switch (m_CurrentChunk->ID)
{
case VERSION:
m_CurrentChunk->bytesRead += fread(&version, 1, m_CurrentChunk->length - m_CurrentChunk->bytesRead, m_FilePointer);
if (version > 0x03)
MessageBox(NULL, "This 3DS file is over version 3 so it may load incorrectly", "Warning", MB_OK);
break;
case OBJECTINFO:
ReadChunk(m_TempChunk);
m_TempChunk->bytesRead += fread(&version, 1, m_TempChunk->length - m_TempChunk->bytesRead, m_FilePointer);
m_CurrentChunk->bytesRead += m_TempChunk->bytesRead;
ProcessNextChunk(pModel, m_CurrentChunk);
break;
case MATERIAL:
pModel->numOfMaterials++;
pModel->pMaterials.push_back(newTexture);
ProcessNextMaterialChunk(pModel, m_CurrentChunk);
break;
case OBJECT:
pModel->numOfObjects++;
pModel->pObject.push_back(newObject);
memset(&(pModel->pObject[pModel->numOfObjects - 1]), 0, sizeof(t3DObject));
m_CurrentChunk->bytesRead += GetString(pModel->pObject[pModel->numOfObjects - 1].strName);
ProcessNextObjectChunk(pModel, &(pModel->pObject[pModel->numOfObjects - 1]), m_CurrentChunk);
break;
case KEYFRAME:
ProcessNextKeyFrameChunk(pModel, m_CurrentChunk);
m_CurrentChunk->bytesRead += fread(gBuffer, 1, m_CurrentChunk->length - m_CurrentChunk->bytesRead, m_FilePointer);
break;
default:
m_CurrentChunk->bytesRead += fread(gBuffer, 1, m_CurrentChunk->length - m_CurrentChunk->bytesRead, m_FilePointer);
break;
}
pPreviousChunk->bytesRead += m_CurrentChunk->bytesRead;
}
delete m_CurrentChunk;
m_CurrentChunk = pPreviousChunk;
}
