HalfFloatGridSource::HalfFloatGridSource(const String &serializedVolumeFile, const bool trilinearValue, const bool trilinearGradient, const bool sobelGradient) :
GridSource(trilinearValue, trilinearGradient, sobelGradient)
{
Timer t;
DataStreamPtr streamRead = Root::getSingleton().openFileStream(serializedVolumeFile);
#if OGRE_NO_ZIP_ARCHIVE == 0
DataStreamPtr uncompressStream(OGRE_NEW DeflateStream(serializedVolumeFile, streamRead));
StreamSerialiser ser(uncompressStream);
#else
StreamSerialiser ser(streamRead);
#endif
if (!ser.readChunkBegin(VOLUME_CHUNK_ID, VOLUME_CHUNK_VERSION))
{
OGRE_EXCEPT(Exception::ERR_INVALID_STATE,
"Invalid volume file given!",
__FUNCTION__);
}
// Read header
Vector3 readFrom, readTo;
ser.read(&readFrom);
ser.read(&readTo);
float voxelWidth;
ser.read<float>(&voxelWidth);
size_t width, height, depth;
ser.read<size_t>(&width);
ser.read<size_t>(&height);
ser.read<size_t>(&depth);
mWidth = static_cast<int>(width);
mHeight = static_cast<int>(height);
mDepth = static_cast<int>(depth);
mDepthTimesHeight = static_cast<int>(mDepth * mHeight);
Vector3 worldDimension = readTo - readFrom;
mPosXScale = (Real)1.0 / (Real)worldDimension.x * (Real)mWidth;
mPosYScale = (Real)1.0 / (Real)worldDimension.y * (Real)mHeight;
mPosZScale = (Real)1.0 / (Real)worldDimension.z * (Real)mDepth;
mVolumeSpaceToWorldSpaceFactor = (Real)worldDimension.x * (Real)mWidth;
mMaxClampedAbsoluteDensity = 0;
// Read data
size_t elementCount = mWidth * mHeight * mDepth;
mData = OGRE_ALLOC_T(uint16, elementCount, MEMCATEGORY_GENERAL);
ser.read(mData, elementCount);
ser.readChunkEnd(VOLUME_CHUNK_ID);
LogManager::getSingleton().stream() << "Processed serialization in " << t.getMilliseconds() << "ms.";
}
void spec_uncompress(int in, int out, int lev) {
blockSize100k = 0;
uncompressStream( in, out );
}
