int testDecode(std::string & fileName)
{
std::string folder;
long found = (long)fileName.find_last_of(PATH_SEP);
if (found != -1)
{
folder = fileName.substr(0,found);
}
if (folder == "")
{
folder = ".";
}
std::string file(fileName.substr(found+1));
std::string outFileName = folder + PATH_SEP + file.substr(0, file.find_last_of(".")) + "_dec.obj";
std::vector< Vec3<Real> > points;
std::vector< Vec3<Real> > normals;
std::vector< Vec2<Real> > colors;
std::vector< Vec2<Real> > texCoords;
std::vector< Vec3<Index> > triangles;
std::vector< unsigned long > matIDs;
std::vector< Material > materials;
std::string materialLib;
std::string matFileName = folder + PATH_SEP + file.substr(0, file.find_last_of(".")) + ".mat";
bool ret = LoadMaterials(matFileName.c_str(), materials, materialLib);
if (ret)
{
const size_t numMaterials = materials.size();
unsigned long n, shift = 0;
for(size_t i = 0; i < numMaterials; ++i)
{
n = materials[i].m_numTriangles + shift;
matIDs.resize(n, materials[i].m_id);
shift = n;
}
}
BinaryStream bstream;
IndexedFaceSet<Index> ifs;
FILE * fin = fopen(fileName.c_str(), "rb");
if (!fin)
{
return -1;
}
fseek(fin, 0, SEEK_END);
unsigned long size = ftell(fin);
bstream.Allocate(size);
rewind(fin);
unsigned long nread = (unsigned long)fread((void *) bstream.GetBuffer(), 1, size, fin);
bstream.SetSize(size);
if (nread != size)
{
return -1;
}
fclose(fin);
std::cout << "Bitstream size (bytes) " << bstream.GetSize() << std::endl;
SC3DMCDecoder<Index> decoder;
// load header
Timer timer;
timer.Tic();
decoder.DecodeHeader(ifs, bstream);
timer.Toc();
std::cout << "DecodeHeader time (ms) " << timer.GetElapsedTime() << std::endl;
// allocate memory
triangles.resize(ifs.GetNCoordIndex());
ifs.SetCoordIndex((Index * const ) &(triangles[0]));
points.resize(ifs.GetNCoord());
ifs.SetCoord((Real * const ) &(points[0]));
if (ifs.GetNNormal() > 0)
{
normals.resize(ifs.GetNNormal());
ifs.SetNormal((Real * const ) &(normals[0]));
}
if (ifs.GetNColor() > 0)
{
colors.resize(ifs.GetNColor());
ifs.SetColor((Real * const ) &(colors[0]));
}
if (ifs.GetNTexCoord() > 0)
{
texCoords.resize(ifs.GetNTexCoord());
ifs.SetTexCoord((Real * const ) &(texCoords[0]));
}
std::cout << "Mesh info "<< std::endl;
std::cout << "\t# coords " << ifs.GetNCoord() << std::endl;
std::cout << "\t# normals " << ifs.GetNNormal() << std::endl;
std::cout << "\t# texcoords " << ifs.GetNTexCoord() << std::endl;
std::cout << "\t# triangles " << ifs.GetNCoordIndex() << std::endl;
// decode mesh
timer.Tic();
decoder.DecodePlayload(ifs, bstream);
timer.Toc();
std::cout << "DecodePlayload time (ms) " << timer.GetElapsedTime() << std::endl;
std::cout << "Details" << std::endl;
const SC3DMCStats & stats = decoder.GetStats();
std::cout << "\t CoordIndex " << stats.m_timeCoordIndex << " ms, " << stats.m_streamSizeCoordIndex <<" bytes (" << 8.0*stats.m_streamSizeCoordIndex / ifs.GetNCoord() <<" bpv)" <<std::endl;
std::cout << "\t Coord " << stats.m_timeCoord << " ms, " << stats.m_streamSizeCoord <<" bytes (" << 8.0*stats.m_streamSizeCoord / ifs.GetNCoord() <<" bpv)" <<std::endl;
std::cout << "\t Normal " << stats.m_timeNormal << " ms, " << stats.m_streamSizeNormal <<" bytes (" << 8.0*stats.m_streamSizeNormal / ifs.GetNCoord() <<" bpv)" <<std::endl;
std::cout << "\t TexCoord " << stats.m_timeTexCoord << " ms, " << stats.m_streamSizeTexCoord <<" bytes (" << 8.0*stats.m_streamSizeTexCoord / ifs.GetNCoord() <<" bpv)" <<std::endl;
std::cout << "\t Color " << stats.m_timeColor << " ms, " << stats.m_streamSizeColor <<" bytes (" << 8.0*stats.m_streamSizeColor / ifs.GetNCoord() <<" bpv)" <<std::endl;
std::cout << "\t Float Attributes " << stats.m_timeFloatAttribute << " ms, " << stats.m_streamSizeFloatAttribute <<" bytes (" << 8.0*stats.m_streamSizeFloatAttribute / ifs.GetNCoord() <<" bpv)" <<std::endl;
std::cout << "\t Integer Attributes " << stats.m_timeFloatAttribute << " ms, " << stats.m_streamSizeFloatAttribute <<" bytes (" << 8.0*stats.m_streamSizeFloatAttribute / ifs.GetNCoord() <<" bpv)" <<std::endl;
std::cout << "\t Reorder " << stats.m_timeReorder << " ms, " << 0 <<" bytes (" << 0.0 <<" bpv)" <<std::endl;
std::cout << "Saving " << outFileName << " ..." << std::endl;
ret = SaveOBJ(outFileName.c_str(), points, texCoords, normals, triangles, materials, matIDs, materialLib);
if (!ret)
{
std::cout << "Error: SaveOBJ()\n" << std::endl;
return -1;
}
std::cout << "Done." << std::endl;
return 0;
}
void testDecode(shared_ptr <GLTFMesh> mesh, BinaryStream &bstream)
{
SC3DMCDecoder <unsigned short> decoder;
IndexedFaceSet <unsigned short> ifs;
unsigned char* outputData;
decoder.DecodeHeader(ifs, bstream);
unsigned int vertexSize = ifs.GetNCoord() * 3 * sizeof(float);
unsigned int normalSize = ifs.GetNNormal() * 3 * sizeof(float);
unsigned int texcoordSize = ifs.GetNFloatAttribute(0) * 2 * sizeof(float);
unsigned int indicesSize = ifs.GetNCoordIndex() * 3 * sizeof(unsigned short);
outputData = (unsigned char*)malloc(vertexSize + normalSize + texcoordSize + indicesSize);
size_t vertexOffset = indicesSize;
float* uncompressedVertices = (Real * const )(outputData + vertexOffset);
ifs.SetCoordIndex((unsigned short * const ) outputData );
ifs.SetCoord((Real * const )uncompressedVertices);
if (ifs.GetNNormal() > 0) {
ifs.SetNormal((Real * const )(outputData + indicesSize + vertexSize));
}
if (ifs.GetNFloatAttribute(0)) {
ifs.SetFloatAttribute(0, (Real * const )(outputData + indicesSize + vertexSize + normalSize));
}
decoder.DecodePlayload(ifs, bstream);
//---
shared_ptr <GLTFMeshAttribute> meshAttribute = mesh->getMeshAttribute(POSITION, 0);
meshAttribute->computeMinMax();
const double* min = meshAttribute->getMin();
const double* max = meshAttribute->getMax();
float* vertices = (float*)meshAttribute->getBufferView()->getBufferDataByApplyingOffset();
printf("coord nb:%d\n",(int)meshAttribute->getCount());
printf("min: %f %f %f\n", min[0], min[1], min[2]);
printf("max: %f %f %f\n", max[0], max[1], max[2]);
float maxQuantError[3];
maxQuantError[0] = (float)(max[0] - min[0]) / (2^12 - 1);
maxQuantError[1] = (float)(max[1] - min[1]) / (2^12 - 1);
maxQuantError[2] = (float)(max[2] - min[2]) / (2^12 - 1);
if (meshAttribute->getCount() == ifs.GetNCoord()) {
for (size_t i = 0 ; i < (meshAttribute->getCount() * 3) ; i++ ) {
float error = vertices[i] - uncompressedVertices[i];
if (error > maxQuantError[i%3]) {
printf("%d:input:%f compressed:%f\n",(int) i%3, vertices[i], uncompressedVertices[i]);
printf("delta is: %f\n", error);
} else {
//printf("ok\n");
}
}
} else {
printf("Fatal error: vertex count do not match\n");
}
free(outputData);
}
