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intern/mantaflow/intern/manta_pp/tbb/fileio/iogrids.cpp

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// DO NOT EDIT !
// This file is generated using the MantaFlow preprocessor (prep generate).
#line 1 "/Users/sebbas/Developer/Mantaflow/mantaflowDevelop/mantaflowgit/source/fileio/iogrids.cpp"
/******************************************************************************
*
* MantaFlow fluid solver framework
* Copyright 2011-2016 Tobias Pfaff, Nils Thuerey
*
* This program is free software, distributed under the terms of the
* Apache License, Version 2.0
* http://www.apache.org/licenses/LICENSE-2.0
*
* Loading and writing grids and meshes to disk
*
******************************************************************************/
#include <iostream>
#include <fstream>
#include <cstdlib>
#include <cstring>
#if NO_ZLIB!=1
extern "C" {
#include <zlib.h>
}
#endif
#if OPENVDB==1
#include "openvdb/openvdb.h"
#endif
#include "mantaio.h"
#include "grid.h"
#include "vector4d.h"
#include "grid4d.h"
using namespace std;
namespace Manta {
static const int STR_LEN_GRID = 252;
//! uni file header, v4
typedef struct {
int dimX, dimY, dimZ; // grid size
int gridType, elementType, bytesPerElement; // data type info
char info[STR_LEN_GRID]; // mantaflow build information
int dimT; // optionally store forth dimension for 4d grids
unsigned long long timestamp; // creation time
} UniHeader;
// note: header v4 only uses 4 bytes of the info string to store the fourth dimension, not needed for pdata
//*****************************************************************************
// conversion functions for double precision
// (note - uni files always store single prec. values)
//*****************************************************************************
#if NO_ZLIB!=1
template <class GRIDT>
void gridConvertWrite(gzFile& gzf, GRIDT& grid, void* ptr, UniHeader& head) {
errMsg("gridConvertWrite: unknown type, not yet supported");
}
template <>
void gridConvertWrite(gzFile& gzf, Grid<int>& grid, void* ptr, UniHeader& head) {
gzwrite(gzf, &head, sizeof(UniHeader));
gzwrite(gzf, &grid[0], sizeof(int)*head.dimX*head.dimY*head.dimZ);
}
template <>
void gridConvertWrite(gzFile& gzf, Grid<double>& grid, void* ptr, UniHeader& head) {
head.bytesPerElement = sizeof(float);
gzwrite(gzf, &head, sizeof(UniHeader));
float* ptrf = (float*)ptr;
for(int i=0; i<grid.getSizeX()*grid.getSizeY()*grid.getSizeZ(); ++i,++ptrf) {
*ptrf = (float)grid[i];
}
gzwrite(gzf, ptr, sizeof(float)* head.dimX*head.dimY*head.dimZ);
}
template <>
void gridConvertWrite(gzFile& gzf, Grid<Vector3D<double> >& grid, void* ptr, UniHeader& head) {
head.bytesPerElement = sizeof(Vector3D<float>);
gzwrite(gzf, &head, sizeof(UniHeader));
float* ptrf = (float*)ptr;
for(int i=0; i<grid.getSizeX()*grid.getSizeY()*grid.getSizeZ(); ++i) {
for(int c=0; c<3; ++c) { *ptrf = (float)grid[i][c]; ptrf++; }
}
gzwrite(gzf, ptr, sizeof(Vector3D<float>) *head.dimX*head.dimY*head.dimZ);
}
template <>
void gridConvertWrite(gzFile& gzf, Grid4d<int>& grid, void* ptr, UniHeader& head) {
gzwrite(gzf, &head, sizeof(UniHeader));
gzwrite(gzf, &grid[0], sizeof(int)*head.dimX*head.dimY*head.dimZ*head.dimT);
}
template <>
void gridConvertWrite(gzFile& gzf, Grid4d<double>& grid, void* ptr, UniHeader& head) {
head.bytesPerElement = sizeof(float);
gzwrite(gzf, &head, sizeof(UniHeader));
float* ptrf = (float*)ptr;
IndexInt s = grid.getStrideT()*grid.getSizeT();
for(IndexInt i=0; i<s; ++i,++ptrf) {
*ptrf = (float)grid[i];
}
gzwrite(gzf, ptr, sizeof(float)* s );
}
template <>
void gridConvertWrite(gzFile& gzf, Grid4d<Vector3D<double> >& grid, void* ptr, UniHeader& head) {
head.bytesPerElement = sizeof(Vector3D<float>);
gzwrite(gzf, &head, sizeof(UniHeader));
float* ptrf = (float*)ptr;
IndexInt s = grid.getStrideT()*grid.getSizeT();
for(IndexInt i=0; i<s; ++i) {
for(int c=0; c<3; ++c) { *ptrf = (float)grid[i][c]; ptrf++; }
}
gzwrite(gzf, ptr, sizeof(Vector3D<float>) *s);
}
template <>
void gridConvertWrite(gzFile& gzf, Grid4d<Vector4D<double> >& grid, void* ptr, UniHeader& head) {
head.bytesPerElement = sizeof(Vector4D<float>);
gzwrite(gzf, &head, sizeof(UniHeader));
float* ptrf = (float*)ptr;
IndexInt s = grid.getStrideT()*grid.getSizeT();
for(IndexInt i=0; i<s; ++i) {
for(int c=0; c<4; ++c) { *ptrf = (float)grid[i][c]; ptrf++; }
}
gzwrite(gzf, ptr, sizeof(Vector4D<float>) *s);
}
template <class T>
void gridReadConvert(gzFile& gzf, Grid<T>& grid, void* ptr, int bytesPerElement) {
errMsg("gridReadConvert: unknown type, not yet supported");
}
template <>
void gridReadConvert<int>(gzFile& gzf, Grid<int>& grid, void* ptr, int bytesPerElement) {
gzread(gzf, ptr, sizeof(int)*grid.getSizeX()*grid.getSizeY()*grid.getSizeZ());
assertMsg (bytesPerElement == sizeof(int), "grid element size doesn't match "<< bytesPerElement <<" vs "<< sizeof(int) );
// easy, nothing to do for ints
memcpy(&(grid[0]), ptr, sizeof(int) * grid.getSizeX()*grid.getSizeY()*grid.getSizeZ() );
}
template <>
void gridReadConvert<double>(gzFile& gzf, Grid<double>& grid, void* ptr, int bytesPerElement) {
gzread(gzf, ptr, sizeof(float)*grid.getSizeX()*grid.getSizeY()*grid.getSizeZ());
assertMsg (bytesPerElement == sizeof(float), "grid element size doesn't match "<< bytesPerElement <<" vs "<< sizeof(float) );
float* ptrf = (float*)ptr;
for(int i=0; i<grid.getSizeX()*grid.getSizeY()*grid.getSizeZ(); ++i,++ptrf) {
grid[i] = (double)(*ptrf);
}
}
template <>
void gridReadConvert<Vec3>(gzFile& gzf, Grid<Vec3>& grid, void* ptr, int bytesPerElement) {
gzread(gzf, ptr, sizeof(Vector3D<float>)*grid.getSizeX()*grid.getSizeY()*grid.getSizeZ());
assertMsg (bytesPerElement == sizeof(Vector3D<float>), "grid element size doesn't match "<< bytesPerElement <<" vs "<< sizeof(Vector3D<float>) );
float* ptrf = (float*)ptr;
for(int i=0; i<grid.getSizeX()*grid.getSizeY()*grid.getSizeZ(); ++i) {
Vec3 v;
for(int c=0; c<3; ++c) { v[c] = double(*ptrf); ptrf++; }
grid[i] = v;
}
}
template <class T>
void gridReadConvert4d(gzFile& gzf, Grid4d<T>& grid, void* ptr, int bytesPerElement, int t) {
errMsg("gridReadConvert4d: unknown type, not yet supported");
}
template <>
void gridReadConvert4d<int>(gzFile& gzf, Grid4d<int>& grid, void* ptr, int bytesPerElement, int t) {
gzread(gzf, ptr, sizeof(int)*grid.getSizeX()*grid.getSizeY()*grid.getSizeZ() );
assertMsg (bytesPerElement == sizeof(int), "grid element size doesn't match "<< bytesPerElement <<" vs "<< sizeof(int) );
// nothing to do for ints
memcpy(&(grid[grid.getSizeX()*grid.getSizeY()*grid.getSizeZ() *t]), ptr, sizeof(int) * grid.getSizeX()*grid.getSizeY()*grid.getSizeZ() );
}
template <>
void gridReadConvert4d<double>(gzFile& gzf, Grid4d<double>& grid, void* ptr, int bytesPerElement, int t) {
assertMsg (bytesPerElement == sizeof(float), "grid element size doesn't match "<< bytesPerElement <<" vs "<< sizeof(float) );
float* ptrf = (float*)ptr;
gzread(gzf, ptr, sizeof(float)*grid.getSizeX()*grid.getSizeY()*grid.getSizeZ());
for(IndexInt i=0; i<grid.getSizeX()*grid.getSizeY()*grid.getSizeZ(); ++i , ++ptrf ) {
grid[ grid.getSizeX()*grid.getSizeY()*grid.getSizeZ()*t + i] = (double)(*ptrf);
}
}
template <>
void gridReadConvert4d<Vec3>(gzFile& gzf, Grid4d<Vec3>& grid, void* ptr, int bytesPerElement, int t) {
assertMsg (bytesPerElement == sizeof(Vector3D<float>), "grid element size doesn't match "<< bytesPerElement <<" vs "<< sizeof(float) );
gzread(gzf, ptr, sizeof(Vector3D<float>)*grid.getSizeX()*grid.getSizeY()*grid.getSizeZ());
float* ptrf = (float*)ptr;
for(IndexInt i=0; i<grid.getSizeX()*grid.getSizeY()*grid.getSizeZ(); ++i) {
Vec3 v;
for(int c=0; c<3; ++c) { v[c] = double(*ptrf); ptrf++; }
grid[grid.getSizeX()*grid.getSizeY()*grid.getSizeZ()*t + i] = v;
}
}
template <>
void gridReadConvert4d<Vec4>(gzFile& gzf, Grid4d<Vec4>& grid, void* ptr, int bytesPerElement, int t) {
assertMsg (bytesPerElement == sizeof(Vector4D<float>), "grid element size doesn't match "<< bytesPerElement <<" vs "<< sizeof(float) );
gzread(gzf, ptr, sizeof(Vector4D<float>)*grid.getSizeX()*grid.getSizeY()*grid.getSizeZ());
float* ptrf = (float*)ptr;
for(IndexInt i=0; i<grid.getSizeX()*grid.getSizeY()*grid.getSizeZ(); ++i) {
Vec4 v;
for(int c=0; c<4; ++c) { v[c] = double(*ptrf); ptrf++; }
grid[grid.getSizeX()*grid.getSizeY()*grid.getSizeZ()*t + i] = v;
}
}
// make sure compatible grid types dont lead to errors...
static int unifyGridType(int type) {
// real <> levelset
if(type & GridBase::TypeReal) type |= GridBase::TypeLevelset;
if(type & GridBase::TypeLevelset) type |= GridBase::TypeReal;
// vec3 <> mac
if(type & GridBase::TypeVec3) type |= GridBase::TypeMAC;
if(type & GridBase::TypeMAC) type |= GridBase::TypeVec3;
return type;
}
#endif // NO_ZLIB!=1
//*****************************************************************************
// grid data
//*****************************************************************************
template<class T>
void writeGridTxt(const string& name, Grid<T>* grid) {
debMsg( "writing grid " << grid->getName() << " to text file " << name ,1);
ofstream ofs(name.c_str());
if (!ofs.good())
errMsg("can't open file " << name);
FOR_IJK(*grid) {
ofs << Vec3i(i,j,k) <<" = "<< (*grid)(i,j,k) <<"\n";
}
ofs.close();
}
template<class T>
void writeGridRaw(const string& name, Grid<T>* grid) {
debMsg( "writing grid " << grid->getName() << " to raw file " << name ,1);
# if NO_ZLIB!=1
gzFile gzf = gzopen(name.c_str(), "wb1"); // do some compression
if (!gzf) errMsg("can't open file " << name);
gzwrite(gzf, &((*grid)[0]), sizeof(T)*grid->getSizeX()*grid->getSizeY()*grid->getSizeZ());
gzclose(gzf);
# else
debMsg( "file format not supported without zlib" ,1);
# endif
}
template<class T>
void readGridRaw(const string& name, Grid<T>* grid) {
debMsg( "reading grid " << grid->getName() << " from raw file " << name ,1);
# if NO_ZLIB!=1
gzFile gzf = gzopen(name.c_str(), "rb");
if (!gzf) errMsg("can't open file " << name);
IndexInt bytes = sizeof(T)*grid->getSizeX()*grid->getSizeY()*grid->getSizeZ();
IndexInt readBytes = gzread(gzf, &((*grid)[0]), bytes);
assertMsg(bytes==readBytes, "can't read raw file, stream length does not match, "<<bytes<<" vs "<<readBytes);
gzclose(gzf);
# else
debMsg( "file format not supported without zlib" ,1);
# endif
}
//! legacy headers for reading old files
typedef struct {
int dimX, dimY, dimZ;
int frames, elements, elementType, bytesPerElement, bytesPerFrame;
} UniLegacyHeader;
typedef struct {
int dimX, dimY, dimZ;
int gridType, elementType, bytesPerElement;
} UniLegacyHeader2;
typedef struct {
int dimX, dimY, dimZ;
int gridType, elementType, bytesPerElement;
char info[256];
unsigned long long timestamp;
} UniLegacyHeader3;
//! for auto-init & check of results of test runs , optionally returns info string of header
void getUniFileSize(const string& name, int& x, int& y, int& z, int* t, std::string* info) {
x = y = z = 0;
# if NO_ZLIB!=1
gzFile gzf = gzopen(name.c_str(), "rb");
if (gzf) {
char ID[5]={0,0,0,0,0};
gzread(gzf, ID, 4);
// v3
if ( (!strcmp(ID, "MNT2")) || (!strcmp(ID, "M4T2")) ) {
UniLegacyHeader3 head;
assertMsg (gzread(gzf, &head, sizeof(UniLegacyHeader3)) == sizeof(UniLegacyHeader3), "can't read file, no header present");
x = head.dimX;
y = head.dimY;
z = head.dimZ;
// optionally , read fourth dim
if ((!strcmp(ID, "M4T2")) && t) {
int dimT = 0;
gzread(gzf, &dimT, sizeof(int) );
(*t) = dimT;
}
}
// v4
if ( (!strcmp(ID, "MNT3")) || (!strcmp(ID, "M4T3")) ) {
UniHeader head;
assertMsg (gzread(gzf, &head, sizeof(UniHeader)) == sizeof(UniHeader), "can't read file, no header present");
x = head.dimX;
y = head.dimY;
z = head.dimZ;
if(t) (*t) = head.dimT;
}
gzclose(gzf);
}
# endif
if(info) {
std::ostringstream out;
out << x <<","<< y <<","<< z ;
if(t && (*t)>0 ) out << ","<< (*t);
*info = out.str();
}
}
Vec3 getUniFileSize(const string& name) {
int x,y,z;
getUniFileSize(name, x,y,z);
return Vec3( Real(x), Real(y), Real(z) );
} static PyObject* _W_0 (PyObject* _self, PyObject* _linargs, PyObject* _kwds) { try { PbArgs _args(_linargs, _kwds); FluidSolver *parent = _args.obtainParent(); bool noTiming = _args.getOpt<bool>("notiming", -1, 0); pbPreparePlugin(parent, "getUniFileSize" , !noTiming ); PyObject *_retval = 0; { ArgLocker _lock; const string& name = _args.get<string >("name",0,&_lock); _retval = toPy(getUniFileSize(name)); _args.check(); } pbFinalizePlugin(parent,"getUniFileSize", !noTiming ); return _retval; } catch(std::exception& e) { pbSetError("getUniFileSize",e.what()); return 0; } } static const Pb::Register _RP_getUniFileSize ("","getUniFileSize",_W_0); extern "C" { void PbRegister_getUniFileSize() { KEEP_UNUSED(_RP_getUniFileSize); } }
//! for test run debugging
void printUniFileInfoString(const string& name) {
std::string info("<file not found>");
int x=-1,y=-1,z=-1,t=-1;
// use getUniFileSize to parse the different headers
getUniFileSize(name, x,y,z,&t, &info);
debMsg("File '"<<name<<"' info: "<< info ,1);
} static PyObject* _W_1 (PyObject* _self, PyObject* _linargs, PyObject* _kwds) { try { PbArgs _args(_linargs, _kwds); FluidSolver *parent = _args.obtainParent(); bool noTiming = _args.getOpt<bool>("notiming", -1, 0); pbPreparePlugin(parent, "printUniFileInfoString" , !noTiming ); PyObject *_retval = 0; { ArgLocker _lock; const string& name = _args.get<string >("name",0,&_lock); _retval = getPyNone(); printUniFileInfoString(name); _args.check(); } pbFinalizePlugin(parent,"printUniFileInfoString", !noTiming ); return _retval; } catch(std::exception& e) { pbSetError("printUniFileInfoString",e.what()); return 0; } } static const Pb::Register _RP_printUniFileInfoString ("","printUniFileInfoString",_W_1); extern "C" { void PbRegister_printUniFileInfoString() { KEEP_UNUSED(_RP_printUniFileInfoString); } }
// actual read/write functions
template <class T>
void writeGridUni(const string& name, Grid<T>* grid) {
debMsg( "Writing grid " << grid->getName() << " to uni file " << name ,1);
# if NO_ZLIB!=1
char ID[5] = "MNT3";
UniHeader head;
head.dimX = grid->getSizeX();
head.dimY = grid->getSizeY();
head.dimZ = grid->getSizeZ();
head.dimT = 0;
head.gridType = grid->getType();
head.bytesPerElement = sizeof(T);
snprintf( head.info, STR_LEN_GRID, "%s", buildInfoString().c_str() );
MuTime stamp;
head.timestamp = stamp.time;
if (grid->getType() & GridBase::TypeInt)
head.elementType = 0;
else if (grid->getType() & GridBase::TypeReal)
head.elementType = 1;
else if (grid->getType() & GridBase::TypeVec3)
head.elementType = 2;
else
errMsg("unknown element type");
gzFile gzf = gzopen(name.c_str(), "wb1"); // do some compression
if (!gzf) errMsg("can't open file " << name);
gzwrite(gzf, ID, 4);
# if FLOATINGPOINT_PRECISION!=1
// always write float values, even if compiled with double precision...
Grid<T> temp(grid->getParent());
// "misuse" temp grid as storage for floating point values (we have double, so it will always fit)
gridConvertWrite( gzf, *grid, &(temp[0]), head);
# else
void* ptr = &((*grid)[0]);
gzwrite(gzf, &head, sizeof(UniHeader));
gzwrite(gzf, ptr, sizeof(T)*head.dimX*head.dimY*head.dimZ);
# endif
gzclose(gzf);
# else
debMsg( "file format not supported without zlib" ,1);
# endif
};
template <class T>
void readGridUni(const string& name, Grid<T>* grid) {
debMsg( "Reading grid " << grid->getName() << " from uni file " << name ,1);
# if NO_ZLIB!=1
gzFile gzf = gzopen(name.c_str(), "rb");
if (!gzf) errMsg("can't open file " << name);
char ID[5]={0,0,0,0,0};
gzread(gzf, ID, 4);
if (!strcmp(ID, "DDF2")) {
// legacy file format
UniLegacyHeader head;
assertMsg (gzread(gzf, &head, sizeof(UniLegacyHeader)) == sizeof(UniLegacyHeader), "can't read file, no header present");
assertMsg (head.dimX == grid->getSizeX() && head.dimY == grid->getSizeY() && head.dimZ == grid->getSizeZ(), "grid dim doesn't match");
assertMsg (head.bytesPerElement * head.elements == sizeof(T), "grid type doesn't match");
// skip flags
int numEl = head.dimX*head.dimY*head.dimZ;
gzseek(gzf, numEl, SEEK_CUR);
// actual grid read
gzread(gzf, &((*grid)[0]), sizeof(T)*numEl);
}
else if (!strcmp(ID, "MNT1")) {
// legacy file format 2
UniLegacyHeader2 head;
assertMsg (gzread(gzf, &head, sizeof(UniLegacyHeader2)) == sizeof(UniLegacyHeader2), "can't read file, no header present");
assertMsg (head.dimX == grid->getSizeX() && head.dimY == grid->getSizeY() && head.dimZ == grid->getSizeZ(), "grid dim doesn't match, "<< Vec3(head.dimX,head.dimY,head.dimZ)<<" vs "<< grid->getSize() );
assertMsg (head.gridType == grid->getType(), "grid type doesn't match "<< head.gridType<<" vs "<< grid->getType() );
assertMsg (head.bytesPerElement == sizeof(T), "grid element size doesn't match "<< head.bytesPerElement <<" vs "<< sizeof(T) );
gzread(gzf, &((*grid)[0]), sizeof(T)*head.dimX*head.dimY*head.dimZ);
}
else if (!strcmp(ID, "MNT2")) {
// a bit ugly, almost identical to MNT3
UniLegacyHeader3 head;
assertMsg (gzread(gzf, &head, sizeof(UniLegacyHeader3)) == sizeof(UniLegacyHeader3), "can't read file, no header present");
assertMsg (head.dimX == grid->getSizeX() && head.dimY == grid->getSizeY() && head.dimZ == grid->getSizeZ(), "grid dim doesn't match, "<< Vec3(head.dimX,head.dimY,head.dimZ)<<" vs "<< grid->getSize() );
assertMsg (unifyGridType(head.gridType)==unifyGridType(grid->getType()) , "grid type doesn't match "<< head.gridType<<" vs "<< grid->getType() );
# if FLOATINGPOINT_PRECISION!=1
Grid<T> temp(grid->getParent());
void* ptr = &(temp[0]);
gridReadConvert<T>(gzf, *grid, ptr, head.bytesPerElement);
# else
assertMsg (head.bytesPerElement == sizeof(T), "grid element size doesn't match "<< head.bytesPerElement <<" vs "<< sizeof(T) );
gzread(gzf, &((*grid)[0]), sizeof(T)*head.dimX*head.dimY*head.dimZ);
# endif
}
else if (!strcmp(ID, "MNT3")) {
// current file format
UniHeader head;
assertMsg (gzread(gzf, &head, sizeof(UniHeader)) == sizeof(UniHeader), "can't read file, no header present");
assertMsg (head.dimX == grid->getSizeX() && head.dimY == grid->getSizeY() && head.dimZ == grid->getSizeZ(), "grid dim doesn't match, "<< Vec3(head.dimX,head.dimY,head.dimZ)<<" vs "<< grid->getSize() );
assertMsg (unifyGridType(head.gridType)==unifyGridType(grid->getType()) , "grid type doesn't match "<< head.gridType<<" vs "<< grid->getType() );
# if FLOATINGPOINT_PRECISION!=1
// convert float to double
Grid<T> temp(grid->getParent());
void* ptr = &(temp[0]);
gridReadConvert<T>(gzf, *grid, ptr, head.bytesPerElement);
# else
assertMsg (head.bytesPerElement == sizeof(T), "grid element size doesn't match "<< head.bytesPerElement <<" vs "<< sizeof(T) );
gzread(gzf, &((*grid)[0]), sizeof(T)*head.dimX*head.dimY*head.dimZ);
# endif
} else {
errMsg( "Unknown header '"<<ID<<"' " );
}
gzclose(gzf);
# else
debMsg( "file format not supported without zlib" ,1);
# endif
};
template <class T>
void writeGridVol(const string& name, Grid<T>* grid) {
debMsg( "writing grid " << grid->getName() << " to vol file " << name ,1);
errMsg("Type not yet supported!");
}
struct volHeader {
char ID[3];
char version;
int encoding;
int dimX, dimY, dimZ;
int channels;
Vec3 bboxMin, bboxMax;
};
template <>
void writeGridVol<Real>(const string& name, Grid<Real>* grid) {
debMsg( "writing real grid " << grid->getName() << " to vol file " << name ,1);
volHeader header;
header.ID[0] = 'V';
header.ID[1] = 'O';
header.ID[2] = 'L';
header.version = 3;
header.encoding = 1; // float32 precision
header.dimX = grid->getSizeX();
header.dimY = grid->getSizeY();
header.dimZ = grid->getSizeZ();
header.channels = 1; // only 1 channel
header.bboxMin = Vec3(-0.5);
header.bboxMax = Vec3( 0.5);
FILE* fp = fopen( name.c_str(), "wb" );
if (fp == NULL) {
errMsg("Cannot open '" << name << "'");
return;
}
fwrite( &header, sizeof(volHeader), 1, fp );
# if FLOATINGPOINT_PRECISION==1
// for float, write one big chunk
fwrite( &(*grid)[0], sizeof(float), grid->getSizeX()*grid->getSizeY()*grid->getSizeZ(), fp );
# else
// explicitly convert each entry to float - we might have double precision in mantaflow
FOR_IDX(*grid) {
float value = (*grid)[idx];
fwrite( &value, sizeof(float), 1, fp );
}
# endif
fclose(fp);
};
template <class T>
void readGridVol(const string& name, Grid<T>* grid) {
debMsg( "writing grid " << grid->getName() << " to vol file " << name ,1);
errMsg("Type not yet supported!");
}
template <>
void readGridVol<Real>(const string& name, Grid<Real>* grid) {
debMsg( "reading real grid " << grid->getName() << " from vol file " << name ,1);
volHeader header;
FILE* fp = fopen( name.c_str(), "rb" );
if (fp == NULL) {
errMsg("Cannot open '" << name << "'");
return;
}
// note, only very basic file format checks here!
assertMsg( fread( &header, 1, sizeof(volHeader) , fp) == sizeof(volHeader), "can't read file, no header present");
if( header.dimX != grid->getSizeX() || header.dimY != grid->getSizeY() || header.dimZ != grid->getSizeZ()) errMsg( "grid dim doesn't match, "<< Vec3(header.dimX,header.dimY,header.dimZ)<<" vs "<< grid->getSize() );
# if FLOATINGPOINT_PRECISION!=1
errMsg("Not yet supported");
# else
const unsigned int s = sizeof(float)*header.dimX*header.dimY*header.dimZ;
assertMsg( fread( &((*grid)[0]), 1, s, fp) == s, "can't read file, no / not enough data");
# endif
fclose(fp);
};
// 4d grids IO
template <class T>
void writeGrid4dUni(const string& name, Grid4d<T>* grid) {
debMsg( "writing grid4d " << grid->getName() << " to uni file " << name ,1);
# if NO_ZLIB!=1
char ID[5] = "M4T3";
UniHeader head;
head.dimX = grid->getSizeX();
head.dimY = grid->getSizeY();
head.dimZ = grid->getSizeZ();
head.dimT = grid->getSizeT();
head.gridType = grid->getType();
head.bytesPerElement = sizeof(T);
snprintf( head.info, STR_LEN_GRID, "%s", buildInfoString().c_str() );
MuTime stamp; stamp.get();
head.timestamp = stamp.time;
if (grid->getType() & Grid4dBase::TypeInt)
head.elementType = 0;
else if (grid->getType() & Grid4dBase::TypeReal)
head.elementType = 1;
else if (grid->getType() & Grid4dBase::TypeVec3)
head.elementType = 2;
else if (grid->getType() & Grid4dBase::TypeVec4)
head.elementType = 2;
else
errMsg("unknown element type");
gzFile gzf = gzopen(name.c_str(), "wb1"); // do some compression
if (!gzf) errMsg("can't open file " << name);
gzwrite(gzf, ID, 4);
# if FLOATINGPOINT_PRECISION!=1
Grid4d<T> temp(grid->getParent());
gridConvertWrite< Grid4d<T> >( gzf, *grid, &(temp[0]), head);
# else
gzwrite(gzf, &head, sizeof(UniHeader));
// can be too large - write in chunks
for(int t=0; t<head.dimT; ++t) {
void* ptr = &((*grid)[ head.dimX*head.dimY*head.dimZ* t ]);
gzwrite(gzf, ptr, sizeof(T)*head.dimX*head.dimY*head.dimZ* 1);
}
# endif
gzclose(gzf);
# else
debMsg( "file format not supported without zlib" ,1);
# endif
};
//! note, reading 4d uni grids is slightly more complicated than 3d ones
//! as it optionally supports sliced reading
template <class T>
void readGrid4dUni(const string& name, Grid4d<T>* grid, int readTslice, Grid4d<T>* slice, void** fileHandle )
{
if(grid) debMsg( "reading grid " << grid->getName() << " from uni file " << name ,1);
if(slice) debMsg( "reading slice " << slice->getName() << ",t="<<readTslice<<" from uni file " << name ,1);
# if NO_ZLIB!=1
gzFile gzf = NULL;
char ID[5]={0,0,0,0,0};
// optionally - reuse file handle, if valid one is passed in fileHandle pointer...
if( (!fileHandle) || (fileHandle && (*fileHandle == NULL)) ) {
gzf = gzopen(name.c_str(), "rb");
if (!gzf) errMsg("can't open file "<<name);
gzread(gzf, ID, 4);
if( fileHandle) { *fileHandle = gzf; }
} else {
// optimized read - reduced sanity checks
gzf = (gzFile)(*fileHandle);
void* ptr = &( (*slice)[ 0 ] );
gzread(gzf, ptr, sizeof(T)* slice->getStrideT()* 1); // quick and dirty...
return;
}
if( (!strcmp(ID, "M4T2")) || (!strcmp(ID, "M4T3")) ) {
int headerSize = -1;
// current file format
UniHeader head;
if(!strcmp(ID, "M4T3")) {
headerSize = sizeof(UniHeader);
assertMsg (gzread(gzf, &head, sizeof(UniHeader)) == sizeof(UniHeader), "can't read file, no 4d header present");
if(FLOATINGPOINT_PRECISION==1) assertMsg (head.bytesPerElement == sizeof(T), "4d grid element size doesn't match "<< head.bytesPerElement <<" vs "<< sizeof(T) );
}
// old header
if(!strcmp(ID, "M4T2")) {
UniLegacyHeader3 lhead;
headerSize = sizeof(UniLegacyHeader3) + sizeof(int);
assertMsg (gzread(gzf, &lhead, sizeof(UniLegacyHeader3)) == sizeof(UniLegacyHeader3), "can't read file, no 4dl header present");
if(FLOATINGPOINT_PRECISION==1) assertMsg (lhead.bytesPerElement == sizeof(T), "4d grid element size doesn't match "<< lhead.bytesPerElement <<" vs "<< sizeof(T) );
int fourthDim = 0;
gzread(gzf, &fourthDim, sizeof(fourthDim));
head.dimX = lhead.dimX;
head.dimY = lhead.dimY;
head.dimZ = lhead.dimZ;
head.dimT = fourthDim;
head.gridType = lhead.gridType;
}
if(readTslice<0) {
assertMsg (head.dimX == grid->getSizeX() && head.dimY == grid->getSizeY() && head.dimZ == grid->getSizeZ(), "grid dim doesn't match, "<< Vec3(head.dimX,head.dimY,head.dimZ)<<" vs "<< grid->getSize() );
assertMsg ( unifyGridType(head.gridType)==unifyGridType(grid->getType()) , "grid type doesn't match "<< head.gridType<<" vs "<< grid->getType() );
// read full 4d grid
assertMsg (head.dimT == grid->getSizeT(), "grid dim4 doesn't match, "<< head.dimT <<" vs "<< grid->getSize() );
// can be too large - read in chunks
# if FLOATINGPOINT_PRECISION!=1
Grid4d<T> temp(grid->getParent());
void* ptr = &(temp[0]);
for(int t=0; t<head.dimT; ++t) {
gridReadConvert4d<T>(gzf, *grid, ptr, head.bytesPerElement, t);
}
# else
for(int t=0; t<head.dimT; ++t) {
void* ptr = &((*grid)[ head.dimX*head.dimY*head.dimZ* t ] );
gzread(gzf, ptr, sizeof(T)* head.dimX*head.dimY*head.dimZ* 1);
}
# endif
} else {
// read chosen slice only
assertMsg (head.dimX == slice->getSizeX() && head.dimY == slice->getSizeY() && head.dimZ == slice->getSizeZ(), "grid dim doesn't match, "<< Vec3(head.dimX,head.dimY,head.dimZ)<<" vs "<< slice->getSize() );
assertMsg ( unifyGridType(head.gridType)==unifyGridType(slice->getType()) , "grid type doesn't match "<< head.gridType<<" vs "<< slice->getType() );
# if FLOATINGPOINT_PRECISION!=1
errMsg( "NYI (2)" ); // slice read not yet supported for double
# else
assertMsg( slice, "No 3d slice grid data given" );
assertMsg (readTslice < head.dimT, "grid dim4 slice too large "<< readTslice <<" vs "<< head.dimT );
void* ptr = &( (*slice)[ 0 ] );
gzseek(gzf, sizeof(T)*head.dimX*head.dimY*head.dimZ* readTslice + headerSize + 4 , SEEK_SET );
gzread(gzf, ptr, sizeof(T)*head.dimX*head.dimY*head.dimZ* 1);
# endif
}
} else {
debMsg( "Unknown header!" ,1);
}
if( !fileHandle) {
gzclose(gzf);
}
# else
debMsg( "file format not supported without zlib" ,1);
# endif
};
void readGrid4dUniCleanup(void** fileHandle) {
gzFile gzf = NULL;
if( fileHandle) {
gzf = (gzFile)(*fileHandle);
gzclose(gzf);
*fileHandle = NULL;
}
}
template<class T>
void writeGrid4dRaw(const string& name, Grid4d<T>* grid) {
debMsg( "writing grid4d " << grid->getName() << " to raw file " << name ,1);
# if NO_ZLIB!=1
gzFile gzf = gzopen(name.c_str(), "wb1"); // do some compression
if (!gzf) errMsg("can't open file " << name);
gzwrite(gzf, &((*grid)[0]), sizeof(T)*grid->getSizeX()*grid->getSizeY()*grid->getSizeZ()*grid->getSizeT());
gzclose(gzf);
# else
debMsg( "file format not supported without zlib" ,1);
# endif
}
template<class T>
void readGrid4dRaw(const string& name, Grid4d<T>* grid) {
debMsg( "reading grid4d " << grid->getName() << " from raw file " << name ,1);
# if NO_ZLIB!=1
gzFile gzf = gzopen(name.c_str(), "rb");
if (!gzf) errMsg("can't open file " << name);
IndexInt bytes = sizeof(T)*grid->getSizeX()*grid->getSizeY()*grid->getSizeZ()*grid->getSizeT();
IndexInt readBytes = gzread(gzf, &((*grid)[0]), bytes);
assertMsg(bytes==readBytes, "can't read raw file, stream length does not match, "<<bytes<<" vs "<<readBytes);
gzclose(gzf);
# else
debMsg( "file format not supported without zlib" ,1);
# endif
}
//*****************************************************************************
// optional openvdb export
#if OPENVDB==1
template <class T>
void writeGridVDB(const string& name, Grid<T>* grid) {
debMsg("Writing grid " << grid->getName() << " to vdb file " << name << " not yet supported!", 1);
}
template <class T>
void readGridVDB(const string& name, Grid<T>* grid) {
debMsg("Reading grid " << grid->getName() << " from vdb file " << name << " not yet supported!", 1);
}
template <>
void writeGridVDB(const string& name, Grid<Real>* grid) {
debMsg("Writing real grid " << grid->getName() << " to vdb file " << name, 1);
// Create an empty floating-point grid with background value 0.
openvdb::initialize();
openvdb::FloatGrid::Ptr gridVDB = openvdb::FloatGrid::create();
gridVDB->setTransform( openvdb::math::Transform::createLinearTransform( 1./grid->getSizeX() )); //voxel size
// Get an accessor for coordinate-based access to voxels.
openvdb::FloatGrid::Accessor accessor = gridVDB->getAccessor();
// Identify the grid as a level set.
gridVDB->setGridClass(openvdb::GRID_FOG_VOLUME);
// Name the grid "density".
gridVDB->setName( grid->getName() );
openvdb::io::File file(name);
FOR_IJK(*grid) {
openvdb::Coord xyz(i, j, k);
accessor.setValue(xyz, (*grid)(i, j, k));
}
// Add the grid pointer to a container.
openvdb::GridPtrVec gridsVDB;
gridsVDB.push_back(gridVDB);
// Write out the contents of the container.
file.write(gridsVDB);
file.close();
};
template <>
void readGridVDB(const string& name, Grid<Real>* grid) {
debMsg("Reading real grid " << grid->getName() << " from vdb file " << name, 1);
openvdb::initialize();
openvdb::io::File file(name);
file.open();
openvdb::GridBase::Ptr baseGrid;
for (openvdb::io::File::NameIterator nameIter = file.beginName(); nameIter != file.endName(); ++nameIter)
{
#ifndef BLENDER
// Read in only the grid we are interested in.
if (nameIter.gridName() == grid->getName()) {
baseGrid = file.readGrid(nameIter.gridName());
} else {
debMsg("skipping grid " << nameIter.gridName(), 1);
}
#else
// For Blender, skip name check and pick first grid from loop
baseGrid = file.readGrid(nameIter.gridName());
break;
#endif
}
file.close();
openvdb::FloatGrid::Ptr gridVDB = openvdb::gridPtrCast<openvdb::FloatGrid>(baseGrid);
openvdb::FloatGrid::Accessor accessor = gridVDB->getAccessor();
FOR_IJK(*grid) {
openvdb::Coord xyz(i, j, k);
float v = accessor.getValue(xyz);
(*grid)(i, j, k) = v;
}
};
template <>
void writeGridVDB(const string& name, Grid<Vec3>* grid) {
debMsg("Writing vec3 grid " << grid->getName() << " to vdb file " << name, 1);
openvdb::initialize();
openvdb::Vec3SGrid::Ptr gridVDB = openvdb::Vec3SGrid::create();
// note , warning - velocity content currently not scaled...
gridVDB->setTransform( openvdb::math::Transform::createLinearTransform( 1./grid->getSizeX() )); //voxel size
openvdb::Vec3SGrid::Accessor accessor = gridVDB->getAccessor();
// MAC or regular vec grid?
if(grid->getType() & GridBase::TypeMAC) gridVDB->setGridClass(openvdb::GRID_STAGGERED);
else gridVDB->setGridClass(openvdb::GRID_UNKNOWN);
gridVDB->setName( grid->getName() );
openvdb::io::File file(name);
FOR_IJK(*grid) {
openvdb::Coord xyz(i, j, k);
Vec3 v = (*grid)(i, j, k);
openvdb::Vec3f vo( (float)v[0] , (float)v[1] , (float)v[2] );
accessor.setValue(xyz, vo);
}
openvdb::GridPtrVec gridsVDB;
gridsVDB.push_back(gridVDB);
file.write(gridsVDB);
file.close();
};
template <>
void readGridVDB(const string& name, Grid<Vec3>* grid) {
debMsg("Reading vec3 grid " << grid->getName() << " from vdb file " << name, 1);
openvdb::initialize();
openvdb::io::File file(name);
file.open();
openvdb::GridBase::Ptr baseGrid;
for (openvdb::io::File::NameIterator nameIter = file.beginName(); nameIter != file.endName(); ++nameIter)
{
#ifndef BLENDER
// Read in only the grid we are interested in.
if (nameIter.gridName() == grid->getName()) {
baseGrid = file.readGrid(nameIter.gridName());
} else {
debMsg("skipping grid " << nameIter.gridName(), 1);
}
#else
// For Blender, skip name check and pick first grid from loop
baseGrid = file.readGrid(nameIter.gridName());
break;
#endif
}
file.close();
openvdb::Vec3SGrid::Ptr gridVDB = openvdb::gridPtrCast<openvdb::Vec3SGrid>(baseGrid);
openvdb::Vec3SGrid::Accessor accessor = gridVDB->getAccessor();
FOR_IJK(*grid) {
openvdb::Coord xyz(i, j, k);
openvdb::Vec3f v = accessor.getValue(xyz);
(*grid)(i, j, k).x = (float)v[0];
(*grid)(i, j, k).y = (float)v[1];
(*grid)(i, j, k).z = (float)v[2];
}
};
#endif // OPENVDB==1
//*****************************************************************************
// helper functions
void quantizeReal(Real& v, const Real step) {
int q = int(v / step + step*0.5);
double qd = q * (double)step;
v = (Real)qd;
}
struct knQuantize : public KernelBase { knQuantize(Grid<Real>& grid, Real step) : KernelBase(&grid,0) ,grid(grid),step(step) { runMessage(); run(); } inline void op(IndexInt idx, Grid<Real>& grid, Real step ) const {
quantizeReal( grid(idx), step );
} inline Grid<Real>& getArg0() { return grid; } typedef Grid<Real> type0;inline Real& getArg1() { return step; } typedef Real type1; void runMessage() { debMsg("Executing kernel knQuantize ", 3); debMsg("Kernel range" << " x "<< maxX << " y "<< maxY << " z "<< minZ<<" - "<< maxZ << " " , 4); }; void operator() (const tbb::blocked_range<IndexInt>& __r) const { for (IndexInt idx=__r.begin(); idx!=(IndexInt)__r.end(); idx++) op(idx, grid,step); } void run() { tbb::parallel_for (tbb::blocked_range<IndexInt>(0, size), *this); } Grid<Real>& grid; Real step; };
void quantizeGrid(Grid<Real>& grid, Real step) { knQuantize(grid,step); } static PyObject* _W_2 (PyObject* _self, PyObject* _linargs, PyObject* _kwds) { try { PbArgs _args(_linargs, _kwds); FluidSolver *parent = _args.obtainParent(); bool noTiming = _args.getOpt<bool>("notiming", -1, 0); pbPreparePlugin(parent, "quantizeGrid" , !noTiming ); PyObject *_retval = 0; { ArgLocker _lock; Grid<Real>& grid = *_args.getPtr<Grid<Real> >("grid",0,&_lock); Real step = _args.get<Real >("step",1,&_lock); _retval = getPyNone(); quantizeGrid(grid,step); _args.check(); } pbFinalizePlugin(parent,"quantizeGrid", !noTiming ); return _retval; } catch(std::exception& e) { pbSetError("quantizeGrid",e.what()); return 0; } } static const Pb::Register _RP_quantizeGrid ("","quantizeGrid",_W_2); extern "C" { void PbRegister_quantizeGrid() { KEEP_UNUSED(_RP_quantizeGrid); } }
struct knQuantizeVec3 : public KernelBase { knQuantizeVec3(Grid<Vec3>& grid, Real step) : KernelBase(&grid,0) ,grid(grid),step(step) { runMessage(); run(); } inline void op(IndexInt idx, Grid<Vec3>& grid, Real step ) const {
for(int c=0; c<3; ++c) quantizeReal( grid(idx)[c], step );
} inline Grid<Vec3>& getArg0() { return grid; } typedef Grid<Vec3> type0;inline Real& getArg1() { return step; } typedef Real type1; void runMessage() { debMsg("Executing kernel knQuantizeVec3 ", 3); debMsg("Kernel range" << " x "<< maxX << " y "<< maxY << " z "<< minZ<<" - "<< maxZ << " " , 4); }; void operator() (const tbb::blocked_range<IndexInt>& __r) const { for (IndexInt idx=__r.begin(); idx!=(IndexInt)__r.end(); idx++) op(idx, grid,step); } void run() { tbb::parallel_for (tbb::blocked_range<IndexInt>(0, size), *this); } Grid<Vec3>& grid; Real step; };
void quantizeGridVec3(Grid<Vec3>& grid, Real step) { knQuantizeVec3(grid,step); } static PyObject* _W_3 (PyObject* _self, PyObject* _linargs, PyObject* _kwds) { try { PbArgs _args(_linargs, _kwds); FluidSolver *parent = _args.obtainParent(); bool noTiming = _args.getOpt<bool>("notiming", -1, 0); pbPreparePlugin(parent, "quantizeGridVec3" , !noTiming ); PyObject *_retval = 0; { ArgLocker _lock; Grid<Vec3>& grid = *_args.getPtr<Grid<Vec3> >("grid",0,&_lock); Real step = _args.get<Real >("step",1,&_lock); _retval = getPyNone(); quantizeGridVec3(grid,step); _args.check(); } pbFinalizePlugin(parent,"quantizeGridVec3", !noTiming ); return _retval; } catch(std::exception& e) { pbSetError("quantizeGridVec3",e.what()); return 0; } } static const Pb::Register _RP_quantizeGridVec3 ("","quantizeGridVec3",_W_3); extern "C" { void PbRegister_quantizeGridVec3() { KEEP_UNUSED(_RP_quantizeGridVec3); } }
// explicit instantiation
template void writeGridRaw<int> (const string& name, Grid<int>* grid);
template void writeGridRaw<Real>(const string& name, Grid<Real>* grid);
template void writeGridRaw<Vec3>(const string& name, Grid<Vec3>* grid);
template void writeGridUni<int> (const string& name, Grid<int>* grid);
template void writeGridUni<Real>(const string& name, Grid<Real>* grid);
template void writeGridUni<Vec3>(const string& name, Grid<Vec3>* grid);
template void writeGridVol<int> (const string& name, Grid<int>* grid);
template void writeGridVol<Vec3>(const string& name, Grid<Vec3>* grid);
template void writeGridTxt<int> (const string& name, Grid<int>* grid);
template void writeGridTxt<Real>(const string& name, Grid<Real>* grid);
template void writeGridTxt<Vec3>(const string& name, Grid<Vec3>* grid);
template void readGridRaw<int> (const string& name, Grid<int>* grid);
template void readGridRaw<Real> (const string& name, Grid<Real>* grid);
template void readGridRaw<Vec3> (const string& name, Grid<Vec3>* grid);
template void readGridUni<int> (const string& name, Grid<int>* grid);
template void readGridUni<Real> (const string& name, Grid<Real>* grid);
template void readGridUni<Vec3> (const string& name, Grid<Vec3>* grid);
template void readGridVol<int> (const string& name, Grid<int>* grid);
template void readGridVol<Vec3> (const string& name, Grid<Vec3>* grid);
template void readGrid4dUni<int> (const string& name, Grid4d<int>* grid, int readTslice, Grid4d<int>* slice, void** fileHandle);
template void readGrid4dUni<Real> (const string& name, Grid4d<Real>* grid, int readTslice, Grid4d<Real>* slice, void** fileHandle);
template void readGrid4dUni<Vec3> (const string& name, Grid4d<Vec3>* grid, int readTslice, Grid4d<Vec3>* slice, void** fileHandle);
template void readGrid4dUni<Vec4> (const string& name, Grid4d<Vec4>* grid, int readTslice, Grid4d<Vec4>* slice, void** fileHandle);
template void writeGrid4dUni<int> (const string& name, Grid4d<int>* grid);
template void writeGrid4dUni<Real>(const string& name, Grid4d<Real>* grid);
template void writeGrid4dUni<Vec3>(const string& name, Grid4d<Vec3>* grid);
template void writeGrid4dUni<Vec4>(const string& name, Grid4d<Vec4>* grid);
template void readGrid4dRaw<int> (const string& name, Grid4d<int>* grid);
template void readGrid4dRaw<Real> (const string& name, Grid4d<Real>* grid);
template void readGrid4dRaw<Vec3> (const string& name, Grid4d<Vec3>* grid);
template void readGrid4dRaw<Vec4> (const string& name, Grid4d<Vec4>* grid);
template void writeGrid4dRaw<int> (const string& name, Grid4d<int>* grid);
template void writeGrid4dRaw<Real>(const string& name, Grid4d<Real>* grid);
template void writeGrid4dRaw<Vec3>(const string& name, Grid4d<Vec3>* grid);
template void writeGrid4dRaw<Vec4>(const string& name, Grid4d<Vec4>* grid);
#if OPENVDB==1
template void writeGridVDB<int>(const string& name, Grid<int>* grid);
template void writeGridVDB<Vec3>(const string& name, Grid<Vec3>* grid);
template void writeGridVDB<Real>(const string& name, Grid<Real>* grid);
template void readGridVDB<int>(const string& name, Grid<int>* grid);
template void readGridVDB<Vec3>(const string& name, Grid<Vec3>* grid);
template void readGridVDB<Real>(const string& name, Grid<Real>* grid);
#endif // OPENVDB==1
} //namespace
namespace Manta {
}