Trisurf Monte Carlo simulator
Samo Penic
2015-03-09 a00f10fd48a1de31c3ac923c2106969f84e831e0
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#include<stdlib.h>
#include<stdio.h>
#include<math.h>
//#include "io.h"
#include "general.h"
#include "timestep.h"
#include "vertexmove.h"
#include "bondflip.h"
#include "frame.h"
#include "io.h"
#include "stats.h"
#include "sh.h"
#include "shcomplex.h"
#include "vesicle.h"
#include<gsl/gsl_complex.h>
#include<gsl/gsl_complex_math.h>
#include<string.h>
 
ts_bool run_simulation(ts_vesicle *vesicle, ts_uint mcsweeps, ts_uint inititer, ts_uint iterations, ts_uint start_iteration){
    ts_uint i, j,k,l,m;
    ts_double r0,kc1,kc2,kc3,kc4;
    ts_double l1,l2,l3,vmsr,bfsr, vmsrt, bfsrt;
    ts_ulong epochtime;
    FILE *fd1,*fd2=NULL;
     char filename[10000];
    strcpy(filename,command_line_args.path);
    strcat(filename,"statistics.csv");
    FILE *fd=fopen(filename,"w");
    if(fd==NULL){
        fatal("Cannot open statistics.csv file for writing",1);
    }
    fprintf(fd, "Epoch OuterLoop VertexMoveSucessRate BondFlipSuccessRate Volume Area lamdba1 lambda2 lambda3 Kc(2-9) Kc(6-9) Kc(2-end) Kc(3-6)\n");
 
     if(vesicle->sphHarmonics!=NULL){
        strcpy(filename,command_line_args.path);
        strcat(filename,"ulm2.csv"); 
        fd2=fopen(filename,"w");
        if(fd2==NULL){
            fatal("Cannot open ulm2.csv file for writing",1);
        }
        fprintf(fd2, "Timestep u_00^2 u_10^2 u_11^2 u_20^2 ...\n");    
 
    }
 
/* RANDOM SEED SET BY CURRENT TIME */
    epochtime=get_epoch();            
    srand48(epochtime);
 
    centermass(vesicle);
    cell_occupation(vesicle);
    vesicle_volume(vesicle); //needed for constant volume at this moment
    vesicle_area(vesicle); //needed for constant area at this moment
    V0=vesicle->volume; 
    A0=vesicle->area;
    epsvol=4.0*sqrt(2.0*M_PI)/pow(3.0,3.0/4.0)*V0/pow(vesicle->tlist->n,3.0/2.0);
    epsarea=A0/(ts_double)vesicle->tlist->n;
  //  fprintf(stderr, "DVol=%1.16f (%1.16f), V0=%1.16f\n", epsvol,0.003e-2*V0,V0);
    if(start_iteration<inititer) ts_fprintf(stdout, "Starting simulation (first %d x %d MC sweeps will not be recorded on disk)\n", inititer, mcsweeps);
    for(i=start_iteration;i<inititer+iterations;i++){
        vmsr=0.0;
        bfsr=0.0;
/*    vesicle_volume(vesicle);
    fprintf(stderr,"Volume before TS=%1.16e\n", vesicle->volume); */
        for(j=0;j<mcsweeps;j++){
            single_timestep(vesicle, &vmsrt, &bfsrt);
            vmsr+=vmsrt;
            bfsr+=bfsrt;
        }
/*
    vesicle_volume(vesicle);
    fprintf(stderr,"Volume after TS=%1.16e\n", vesicle->volume); */
        vmsr/=(ts_double)mcsweeps;
        bfsr/=(ts_double)mcsweeps;
        centermass(vesicle);
        cell_occupation(vesicle);
        ts_fprintf(stdout,"Done %d out of %d iterations (x %d MC sweeps).\n",i+1,inititer+iterations,mcsweeps);
            dump_state(vesicle,i);
        if(i>=inititer){
            write_vertex_xml_file(vesicle,i-inititer);
            write_master_xml_file(command_line_args.output_fullfilename);
            epochtime=get_epoch();            
            gyration_eigen(vesicle, &l1, &l2, &l3);
            vesicle_volume(vesicle); //calculates just volume. 
            vesicle_area(vesicle); //calculates area.
            r0=getR0(vesicle);
            if(vesicle->sphHarmonics!=NULL){
                preparationSh(vesicle,r0);
                //calculateYlmi(vesicle);
                calculateUlmComplex(vesicle);
                storeUlmComplex2(vesicle);
                saveAvgUlm2(vesicle);
                kc1=calculateKc(vesicle, 2,9);
                kc2=calculateKc(vesicle, 6,9);
                kc3=calculateKc(vesicle, 2,vesicle->sphHarmonics->l);
                kc4=calculateKc(vesicle, 3,6);
                strcpy(filename,command_line_args.path);
                strcat(filename,"state.dat");  
                fd1=fopen(filename,"w");
                fprintf(fd1,"%e %e\n",vesicle->volume, getR0(vesicle));
                for(k=0;k<vesicle->vlist->n;k++){
                    fprintf(fd1,"%e %e %e %e %e\n",
                        vesicle->vlist->vtx[k]->x,
                        vesicle->vlist->vtx[k]->y,
                        vesicle->vlist->vtx[k]->z,
                        vesicle->vlist->vtx[k]->solAngle,
                        vesicle->vlist->vtx[k]->relR
                    );
                }
                fclose(fd1);
        
            fprintf(fd2,"%u ", i);
            for(l=0;l<vesicle->sphHarmonics->l;l++){
                for(m=l;m<2*l+1;m++){
                    fprintf(fd2,"%e ", gsl_complex_abs2(vesicle->sphHarmonics->ulmComplex[l][m]) );
                }
            }
                fprintf(fd2,"\n");
    
                fflush(fd2);    
 
            }
 
            fprintf(fd, "%lu %u %e %e %1.16e %1.16e %1.16e %1.16e %1.16e %1.16e %1.16e %1.16e %1.16e\n",epochtime,i,vmsr,bfsr,vesicle->volume, vesicle->area,l1,l2,l3,kc1, kc2, kc3,kc4);
 
            fflush(fd);    
        //    sprintf(filename,"timestep-%05d.pov",i-inititer);
        //    write_pov_file(vesicle,filename);
        }
    }
    fclose(fd);
    if(fd2!=NULL) fclose(fd2);
    return TS_SUCCESS;
}
 
ts_bool single_timestep(ts_vesicle *vesicle,ts_double *vmsr, ts_double *bfsr){
//    vesicle_volume(vesicle);
//    fprintf(stderr,"Volume before TS=%1.16e\n", vesicle->volume);
    ts_bool retval;
    ts_double rnvec[3];
    ts_uint i,j, b;
    ts_uint vmsrcnt=0;
    for(i=0;i<vesicle->vlist->n;i++){
        rnvec[0]=drand48();
        rnvec[1]=drand48();
        rnvec[2]=drand48();
        retval=single_verticle_timestep(vesicle,vesicle->vlist->vtx[i],rnvec);
    if(retval==TS_SUCCESS) vmsrcnt++;        
    }
 
    ts_int bfsrcnt=0;
    for(i=0;i<3*vesicle->vlist->n;i++){
    b=rand() % vesicle->blist->n;
        //find a bond and return a pointer to a bond...
        //call single_bondflip_timestep...
        retval=single_bondflip_timestep(vesicle,vesicle->blist->bond[b],rnvec);
       //     b++; retval=TS_FAIL;
    if(retval==TS_SUCCESS) bfsrcnt++;        
    }
 
    for(i=0;i<vesicle->poly_list->n;i++){
        for(j=0;j<vesicle->poly_list->poly[i]->vlist->n;j++){
            rnvec[0]=drand48();
            rnvec[1]=drand48();
            rnvec[2]=drand48();
            retval=single_poly_vertex_move(vesicle,vesicle->poly_list->poly[i],vesicle->poly_list->poly[i]->vlist->vtx[j],rnvec);    
        }
    }
 
 
    for(i=0;i<vesicle->filament_list->n;i++){
        for(j=0;j<vesicle->filament_list->poly[i]->vlist->n;j++){
            rnvec[0]=drand48();
            rnvec[1]=drand48();
            rnvec[2]=drand48();
            retval=single_filament_vertex_move(vesicle,vesicle->filament_list->poly[i],vesicle->filament_list->poly[i]->vlist->vtx[j],rnvec);    
        }
    }
 
 
//    printf("Bondflip success rate in one sweep: %d/%d=%e\n", cnt,3*vesicle->blist->n,(double)cnt/(double)vesicle->blist->n/3.0);
    *vmsr=(ts_double)vmsrcnt/(ts_double)vesicle->vlist->n;
    *bfsr=(ts_double)bfsrcnt/(ts_double)vesicle->vlist->n/3.0;
//    vesicle_volume(vesicle);
//    fprintf(stderr,"Volume after TS=%1.16e\n", vesicle->volume);
    return TS_SUCCESS;
}