From a8e354c7fad70eb7fdfda62ec83faf1be6c4ed44 Mon Sep 17 00:00:00 2001
From: Samo Penic <samo.penic@gmail.com>
Date: Tue, 24 Jan 2023 20:03:01 +0000
Subject: [PATCH] Changes in code and README for easier compilation. May break something

---
 src/timestep.c |  123 ++++++++++++++++++++++++++++++----------
 1 files changed, 92 insertions(+), 31 deletions(-)

diff --git a/src/timestep.c b/src/timestep.c
index a8c0b32..753d8b3 100644
--- a/src/timestep.c
+++ b/src/timestep.c
@@ -4,6 +4,7 @@
 #include<math.h>
 //#include "io.h"
 #include "general.h"
+#include "globals.h"
 #include "timestep.h"
 #include "vertexmove.h"
 #include "bondflip.h"
@@ -16,50 +17,100 @@
 #include<gsl/gsl_complex.h>
 #include<gsl/gsl_complex_math.h>
 #include<string.h>
+#include <sys/stat.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=0,kc2=0,kc3=0,kc4=0;
+	ts_uint i, j,k; //,l,m;
+	ts_double kc1=0,kc2=0,kc3=0,kc4=0;
 	ts_double l1,l2,l3,vmsr,bfsr, vmsrt, bfsrt;
 	ts_ulong epochtime;
-	FILE *fd1,*fd2=NULL,*fd3=NULL;
+	ts_double max_z,min_z;
+	FILE *fd3=NULL;
  	char filename[10000];
-    strcpy(filename,command_line_args.path);
-    strcat(filename,"statistics.csv");
-	FILE *fd=fopen(filename,"w");
+	//struct stat st;
+	strcpy(filename,command_line_args.path);
+	strcat(filename,"statistics.csv");
+	//int result = stat(filename, &st);
+	FILE *fd;
+	if(start_iteration==0)
+		fd=fopen(filename,"w");
+	else
+		fd=fopen(filename,"a");
 	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(start_iteration==0)
+		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){
+/*	 if(vesicle->sphHarmonics!=NULL){
         strcpy(filename,command_line_args.path);
         strcat(filename,"ulm2.csv"); 
+//	int result = stat(filename, &st);
+	if(start_iteration==0)
 		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");	
+	else
+		fd2=fopen(filename,"a");
+	if(fd2==NULL){
+		fatal("Cannot open ulm2.csv file for writing",1);
+	} 
 
+	if(start_iteration==0) //file does not exist
+		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;
+	vesicle_area(vesicle); //needed for constant area at this moment
+	if(V0<0.000001) 
+		V0=vesicle->volume; 
+	ts_fprintf(stdout,"Setting volume V0=%.17f\n",V0);
+	if(A0<0.000001)
+		A0=vesicle->area;
+	ts_fprintf(stdout,"Setting area A0=%.17f\n",A0);
 	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);
+//	printf("epsvol=%e\n",epsvol);
+	epsarea=A0/(ts_double)vesicle->tlist->n;
+
 	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;
+
+	//plane confinement
+	if(vesicle->tape->plane_confinement_switch){
+		min_z=1e10;
+		max_z=-1e10;
+		for(k=0;k<vesicle->vlist->n;k++){
+			if(vesicle->vlist->vtx[k]->z > max_z) max_z=vesicle->vlist->vtx[k]->z;
+			if(vesicle->vlist->vtx[k]->z < min_z) min_z=vesicle->vlist->vtx[k]->z;
+		}
+		vesicle->confinement_plane.force_switch=0;
+		if(max_z>=vesicle->tape->plane_d/2.0){
+			ts_fprintf(stdout, "Max vertex out of bounds (z>=%e). Plane set to max_z = %e.\n",vesicle->tape->plane_d/2.0,max_z);
+			vesicle->confinement_plane.z_max = max_z;
+			vesicle->confinement_plane.force_switch=1;
+		} else {
+			vesicle->confinement_plane.z_max=vesicle->tape->plane_d/2.0;
+		}
+		if(min_z<=-vesicle->tape->plane_d/2.0){
+			ts_fprintf(stdout, "Min vertex out of bounds (z<=%e). Plane set to min_z = %e.\n",-vesicle->tape->plane_d/2.0,min_z);
+			vesicle->confinement_plane.z_min = min_z;
+			vesicle->confinement_plane.force_switch=1;
+		} else {
+			vesicle->confinement_plane.z_min=-vesicle->tape->plane_d/2.0;
+		}
+		ts_fprintf(stdout,"Vesicle confinement by plane set to (zmin, zmax)=(%e,%e).\n",vesicle->confinement_plane.z_min,vesicle->confinement_plane.z_max);
+		if(vesicle->confinement_plane.force_switch) ts_fprintf(stdout,"Squeezing with force %e.\n",vesicle->tape->plane_F);
+	}
+
+	//end plane confinement
+
 /*    vesicle_volume(vesicle);
     fprintf(stderr,"Volume before TS=%1.16e\n", vesicle->volume); */
 		for(j=0;j<mcsweeps;j++){
@@ -74,23 +125,23 @@
 		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);
-		fd3=fopen(".status","w");
-		if(fd3==NULL){
-			fatal("Cannot open .status file for writing",1);
+/* BINARY DUMPS ARE OBSOLETE. SHOULD WORK AS OF MAR 2020, BUT NO LONGER MAINTAINED */
+//            	dump_state(vesicle,i);
+			vesicle_volume(vesicle); //calculates just volume. 
+            		vesicle_area(vesicle); //calculates area.
+		if(vesicle->tape->constvolswitch==0){
+			V0=vesicle->volume;
 		}
-		fprintf(fd3,"%d",i);
-		fclose(fd3);
+		if(vesicle->tape->constareaswitch==0){
+			A0=vesicle->area;
+		}
 		if(i>=inititer){
-			write_vertex_xml_file(vesicle,i-inititer);
+			write_vertex_xml_file(vesicle,i-inititer,NULL);
 			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){
+			//r0=getR0(vesicle);
+/*            if(vesicle->sphHarmonics!=NULL){
 			    preparationSh(vesicle,r0);
 			    //calculateYlmi(vesicle);
 			    calculateUlmComplex(vesicle);
@@ -100,6 +151,7 @@
                 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");
@@ -125,17 +177,26 @@
 	
 		    	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);
+		} //end if(inititer....)
+		fd3=fopen(".status","w"); //write status file when everything is written to disk.
+		if(fd3==NULL){
+			fatal("Cannot open .status file for writing",1);
 		}
+		fprintf(fd3,"%d",i);
+		fclose(fd3);
+		ts_fprintf(stdout,"Done %d out of %d iterations (x %d MC sweeps).\n",i+1,inititer+iterations,mcsweeps);
 	}
 	fclose(fd);
-	if(fd2!=NULL) fclose(fd2);
+//	if(fd2!=NULL) fclose(fd2);
 	return TS_SUCCESS;
 }
 

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