391 lines
7.6 KiB
C++
391 lines
7.6 KiB
C++
#include <cmath>
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#include <cstring>
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#include <cstdlib>
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#include <cassert>
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#include <sstream>
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#include <iostream>
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#include <iomanip>
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#include <string>
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#include <fstream>
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#include "loadRamses.hpp"
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#include "load_data.h"
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using namespace std;
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#if 0
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#define read_buf(b, n) \
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{ \
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int k; \
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control_size -= n; \
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for (k = (n-1); k >= 0; k--) \
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infile.read(&b[k],1); \
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}
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#else
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#define read_buf(b, n) \
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{ \
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int k; \
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control_size -= n; \
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for (k = 0; k < n; k++) \
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infile.read(&b[k], 1); \
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}
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#endif
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#define read_int(i) \
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{ \
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char *o = (char*)&(i); \
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read_buf(o, 4); \
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}
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#define read_real(f) \
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{ \
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char *o = (char*)&(f); \
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read_buf(o, 4); \
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}
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#define read_characters(c, n) { \
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int k; \
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control_size -= n; \
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infile.read(c, n); \
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}
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#define push_dummy_control(id) \
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{ int control_size = 0;
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#define pop_dummy_control() }
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#define push_control(id) \
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{ \
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int control_size = 0; \
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int control_size2 = 0; \
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char *intbuf = (char*)&control_size; \
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read_int(control_size);
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#define pop_control(id) \
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assert(control_size == 0); \
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read_int(control_size2); \
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}
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GadgetData *CosmoTool::loadRamses(const char *name)
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{
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GadgetData *gd = (GadgetData *)malloc(sizeof(GadgetData));
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int id = 1;
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uint32_t totPart = 0;
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cout << "Detecting number of files and particles..." << endl;
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while (1)
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{
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ostringstream ss_fname;
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ss_fname << name << setfill('0') << setw(5) << id;
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string fname = ss_fname.str();
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cout << " ... " << fname << endl;
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ifstream infile(fname.c_str());
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if (!infile)
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break;
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int nCpu, ndim, nPar;
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push_control(CPU);
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read_int(nCpu);
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pop_control(CPU);
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push_control(DIM);
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read_int(ndim);
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pop_control(DIM);
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push_control(NPAR);
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read_int(nPar);
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pop_control(NPAR);
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cout << " NUMCPU=" << nCpu << " NUMDIM=" << ndim << " NumPart=" << nPar << endl;
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totPart += nPar;
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id++;
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}
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assert (totPart <= ((~(size_t)0)/sizeof(ParticleState)));
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size_t memSize = sizeof(ParticleState)*(size_t)totPart;
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cout << " Needing " << memSize / 1024 << " kBytes" << endl;
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gd->particles = (ParticleState *)malloc(memSize);
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assert(gd->particles != 0);
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gd->NumPart = totPart;
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gd->ntot_withmasses = totPart;
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gd->header.npart[0] = totPart;
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for (int k = 1; k < 6; k++)
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{
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gd->header.npart[k] = 0;
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gd->header.mass[k] = 0;
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}
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gd->header.num_files = id;
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gd->header.BoxSize = 200.0 * 1000; // kPc
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gd->header.Omega0 = 0.30; // ????
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gd->header.OmegaLambda = 0.70; // ????
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gd->header.HubbleParam = 0.70; // ????
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cout << " Total number part=" << totPart << endl
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<< "Loading particles ..." << endl;
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uint32_t curPos = 0;
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id = 1;
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while (1)
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{
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ostringstream ss_fname;
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ss_fname << name << setfill('0') << setw(5) << id;
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string fname = ss_fname.str();
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cout << " ... " << id;
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cout.flush();
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ifstream infile(fname.c_str());
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if (!infile)
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break;
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int nCpu, ndim, nPar;
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push_control(CPU);
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read_int(nCpu);
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pop_control(CPU);
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push_control(DIM);
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read_int(ndim);
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pop_control(DIM);
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push_control(NPAR);
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read_int(nPar);
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pop_control(NPAR);
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ParticleState *s = &gd->particles[curPos];
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for (uint32_t i = nPar; i > 0; i--,s++)
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s->Mass = 1.0;
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s = &gd->particles[curPos];
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push_control(POSX);
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for (uint32_t i = nPar; i > 0; i--)
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{
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read_real(s->Pos[0]);
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s->Pos[0] *= gd->header.BoxSize;
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s++;
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}
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pop_control(POSX);
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s = &gd->particles[curPos];
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push_control(POSY);
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for (uint32_t i = nPar; i > 0; i--)
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{
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read_real(s->Pos[1]);
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s->Pos[1] *= gd->header.BoxSize;
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s++;
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}
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pop_control(POSY);
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s = &gd->particles[curPos];
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push_control(POSZ);
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for (uint32_t i = nPar; i > 0; i--)
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{
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read_real(s->Pos[2]);
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s->Pos[2] *= gd->header.BoxSize;
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s++;
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}
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pop_control(POSZ);
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push_control(VELX);
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for (uint32_t i = 0; i < nPar; i++)
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{
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read_real(gd->particles[curPos+i].Vel[0]);
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}
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pop_control(VELX);
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push_control(VELY);
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for (uint32_t i = 0; i < nPar; i++)
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{
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read_real(gd->particles[curPos+i].Vel[1]);
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}
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pop_control(VELY);
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push_control(VELZ);
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for (uint32_t i = 0; i < nPar; i++)
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{
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read_real(gd->particles[curPos+i].Vel[2]);
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}
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pop_control(VELZ);
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curPos += nPar;
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id++;
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}
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cout << endl;
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return gd;
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}
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PurePositionData *CosmoTool::loadRamsesPosition(const char *name)
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{
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PurePositionData *gd = (PurePositionData *)malloc(sizeof(PurePositionData));
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int id = 1;
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uint32_t totPart = 0;
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int nCpu = 0;
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cout << "Detecting number of files and particles..." << endl;
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while (1)
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{
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ostringstream ss_fname;
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ss_fname << name << setfill('0') << setw(5) << id;
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string fname = ss_fname.str();
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cout << " ... " << fname << endl;
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ifstream infile(fname.c_str());
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if (!infile)
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break;
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int ndim, nPar;
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push_control(CPU);
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read_int(nCpu);
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pop_control(CPU);
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push_control(DIM);
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read_int(ndim);
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pop_control(DIM);
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push_control(NPAR);
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read_int(nPar);
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pop_control(NPAR);
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cout << " NUMCPU=" << nCpu << " NUMDIM=" << ndim << " NumPart=" << nPar << endl;
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totPart += nPar;
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id++;
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}
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assert (totPart <= ((~(size_t)0)/sizeof(FCoordinates)));
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size_t memSize = sizeof(FCoordinates)*(size_t)(totPart+totPart/nCpu);
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cout << " Needing " << memSize / 1024 << " kBytes" << endl;
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gd->pos = (FCoordinates *)malloc(sizeof(FCoordinates)*totPart);
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assert(gd->pos != 0);
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gd->NumPart = totPart;
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gd->BoxSize = 1000.0;
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cout << " Total number part=" << totPart << endl
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<< "Loading particles ..." << endl;
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uint32_t curPos = 0;
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id = 1;
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while (1)
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{
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ostringstream ss_fname;
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ss_fname << name << setfill('0') << setw(5) << id;
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string fname = ss_fname.str();
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int *idP;
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cout << " ... " << id;
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cout.flush();
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ifstream infile(fname.c_str());
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if (!infile)
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break;
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int nCpu, ndim, nPar;
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push_control(CPU);
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read_int(nCpu);
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pop_control(CPU);
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push_control(DIM);
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read_int(ndim);
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pop_control(DIM);
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push_control(NPAR);
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read_int(nPar);
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pop_control(NPAR);
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FCoordinates *s = new FCoordinates[nPar];
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push_control(POSX);
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for (uint32_t i = 0; i < nPar; i++)
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{
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read_real(s[i][0]);
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s[i][0] *= gd->BoxSize;
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}
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pop_control(POSX);
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push_control(POSY);
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for (uint32_t i = 0; i < nPar; i++)
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{
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read_real(s[i][1]);
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s[i][1] *= gd->BoxSize;
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}
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pop_control(POSY);
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push_control(POSZ);
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for (uint32_t i = 0; i < nPar; i++)
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{
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read_real(s[i][2]);
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s[i][2] *= gd->BoxSize;
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}
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pop_control(POSZ);
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// SKIP VELOCITIES
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for (int k = 0; k < 3; k++) {
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push_control(V);
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for (uint32_t i = nPar; i > 0; i--)
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{
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float dummyF;
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read_real(dummyF);
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}
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pop_control(V);
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}
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float minMass = INFINITY;
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push_control(MASS);
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for (uint32_t i = nPar; i > 0; i--)
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{
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float dummyF;
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read_real(dummyF);
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if (dummyF < minMass) minMass = dummyF;
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}
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pop_control(MASS);
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push_control(ID);
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for (uint32_t i = 0; i < nPar; i++)
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{
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int id;
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read_int(id);
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id--;
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assert(id >= 0);
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assert(id < totPart);
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memcpy(&gd->pos[id], &s[i], sizeof(FCoordinates));
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}
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pop_control(ID);
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delete[] s;
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curPos += nPar;
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id++;
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}
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cout << endl;
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return gd;
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}
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#if 0
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int main(int argc, char **argv)
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{
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GadgetData *gd = loadRamses(argv[1]);
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}
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#endif
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#if 0
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int main(int argc, char **argv)
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{
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GadgetData *gd = loadRamses(argv[1]);
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}
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#endif
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