From 0f9d229fb830435d92cfc73c85aa7771a420286c Mon Sep 17 00:00:00 2001
From: mihaf <miha.fosnaric@gmail.com>
Date: Tue, 13 May 2014 09:23:46 +0000
Subject: [PATCH] Just tape

---
 src/bondflip.c |  166 ++++++++++++++++++++++++++++++++++++++++++++++++++-----
 1 files changed, 151 insertions(+), 15 deletions(-)

diff --git a/src/bondflip.c b/src/bondflip.c
index da2c664..3a31a28 100644
--- a/src/bondflip.c
+++ b/src/bondflip.c
@@ -11,6 +11,8 @@
 #include "bondflip.h"
 //#include "io.h"
 #include<stdio.h>
+#include<string.h>
+#include "constvol.h"
 
 ts_bool single_bondflip_timestep(ts_vesicle *vesicle, ts_bond *bond, ts_double *rn){
 /*c  Vertex and triangle (lm and lp) indexing for bond flip:
@@ -29,10 +31,14 @@
     ts_vertex *k=bond->vtx2;
     ts_uint nei,neip,neim;
     ts_uint i,j;
-    ts_double oldenergy, delta_energy;
+    ts_double oldenergy, delta_energy, dvol=0.0;
     ts_triangle *lm=NULL,*lp=NULL, *lp1=NULL, *lm2=NULL;
 
     ts_vertex *kp,*km;
+
+    ts_double delta_energy_cv;
+    ts_vertex *constvol_vtx_moved, *constvol_vtx_backup;
+    ts_bool retval;
 
     if(it->neigh_no< 3) return TS_FAIL;
     if(k->neigh_no< 3) return TS_FAIL;
@@ -113,19 +119,64 @@
     }
 
 if(lm2==NULL || lp1==NULL) fatal("ts_flip_bond: Cannot find triangles lm2 and lp1!",999);
- //   fprintf(stderr,"I WAS HERE! Before bondflip!\n");
- //   fprintf(stderr,"%e, %e, %e\n", lm->xnorm, lm->ynorm, lm->znorm);
-	
-    ts_flip_bond(k,it,km,kp, bond,lm, lp, lm2, lp1);
-//    fprintf(stderr,"I WAS HERE! Bondflip successful!\n");
 
+
+/* backup old structure */
+/* need to backup:
+ * vertices k, kp, km, it
+ * triangles lm, lp, lm2, lp1
+ * bond
+ */
+ts_vertex *bck_vtx[4];
+ts_triangle *bck_tria[4];
+ts_bond *bck_bond;
+ts_vertex *orig_vtx[]={k,it,kp,km};
+ts_triangle *orig_tria[]={lm,lp,lm2,lp1};
+
+//fprintf(stderr,"Backuping!!!\n");
+	bck_bond=(ts_bond *)malloc(sizeof(ts_bond));
+for(i=0;i<4;i++){
+/*	fprintf(stderr,"vtx neigh[%d]=",i);
+	for(j=0;j<orig_vtx[i]->neigh_no;j++) fprintf(stderr," %d", orig_vtx[i]->neigh[j]->idx);
+	fprintf(stderr,"\n");
+*/
+	bck_vtx[i]=(ts_vertex *)malloc(sizeof(ts_vertex));
+	bck_tria[i]=(ts_triangle *)malloc(sizeof(ts_triangle));
+	memcpy((void *)bck_vtx[i],(void *)orig_vtx[i],sizeof(ts_vertex));
+	memcpy((void *)bck_tria[i],(void *)orig_tria[i],sizeof(ts_triangle));
+	/* level 2 pointers */
+
+	bck_vtx[i]->neigh=(ts_vertex **)malloc(orig_vtx[i]->neigh_no*sizeof(ts_vertex *));
+	bck_vtx[i]->tristar=(ts_triangle **)malloc(orig_vtx[i]->tristar_no*sizeof(ts_triangle *));
+	bck_vtx[i]->bond=(ts_bond **)malloc(orig_vtx[i]->bond_no*sizeof(ts_bond *));
+	bck_tria[i]->neigh=(ts_triangle **)malloc(orig_tria[i]->neigh_no*sizeof(ts_triangle *));
+
+	memcpy((void *)bck_vtx[i]->neigh,(void *)orig_vtx[i]->neigh,orig_vtx[i]->neigh_no*sizeof(ts_vertex *));
+	memcpy((void *)bck_vtx[i]->tristar,(void *)orig_vtx[i]->tristar,orig_vtx[i]->tristar_no*sizeof(ts_triangle *));
+	memcpy((void *)bck_vtx[i]->bond,(void *)orig_vtx[i]->bond,orig_vtx[i]->bond_no*sizeof(ts_bond *));
+	
+	memcpy((void *)bck_tria[i]->neigh,(void *)orig_tria[i]->neigh,orig_tria[i]->neigh_no*sizeof(ts_triangle *));	
+}
+	memcpy(bck_bond,bond,sizeof(ts_bond));
+//fprintf(stderr,"Backup complete!!!\n");
+/* end backup vertex */
+
+/* Save old energy */
   oldenergy=0;
   oldenergy+=k->xk* k->energy;
   oldenergy+=kp->xk* kp->energy;
   oldenergy+=km->xk* km->energy;
   oldenergy+=it->xk* it->energy;
-	//Neigbours don't change its energy.
+  //Neigbours of k, it, km, kp don't change its energy.
 
+	if(vesicle->pswitch == 1 || vesicle->tape->constvolswitch==1){dvol = -lm->volume - lp->volume;}
+      
+/*    vesicle_volume(vesicle);
+    fprintf(stderr,"Volume in the beginning=%1.16e\n", vesicle->volume);
+*/
+
+/* fix data structure for flipped bond */
+    ts_flip_bond(k,it,km,kp, bond,lm, lp, lm2, lp1);
 
 
 /* Calculating the new energy */
@@ -134,13 +185,48 @@
   delta_energy+=kp->xk* kp->energy;
   delta_energy+=km->xk* km->energy;
   delta_energy+=it->xk* it->energy;
-	//Neigbours don't change its energy.
-  delta_energy-=oldenergy;
- // fprintf(stderr,"I WAS HERE! Got energy!\n");
+  //Neigbours of k, it, km, kp don't change its energy.
+
+    delta_energy-=oldenergy;
+	if(vesicle->pswitch == 1 || vesicle->tape->constvolswitch==1){
+		dvol = dvol + lm->volume + lp->volume;
+		if(vesicle->pswitch==1) delta_energy-= vesicle->pressure*dvol;
+	}
+
+    if(vesicle->tape->constvolswitch == 1){
+        retval=constvolume(vesicle, it, -dvol, &delta_energy_cv, &constvol_vtx_moved,&constvol_vtx_backup);
+        if(retval==TS_FAIL){
+/* restoration procedure copied from few lines below */
+            for(i=0;i<4;i++){
+    //			fprintf(stderr,"Restoring vtx neigh[%d] with neighbours %d\n",i, orig_vtx[i]->neigh_no );
+                free(orig_vtx[i]->neigh);
+                free(orig_vtx[i]->tristar);
+                free(orig_vtx[i]->bond);
+                free(orig_tria[i]->neigh);
+                memcpy((void *)orig_vtx[i],(void *)bck_vtx[i],sizeof(ts_vertex));
+                memcpy((void *)orig_tria[i],(void *)bck_tria[i],sizeof(ts_triangle));
+    //			fprintf(stderr,"Restored vtx neigh[%d] with neighbours %d\n",i, orig_vtx[i]->neigh_no );
+                /* level 2 pointers are redirected*/
+            }
+            memcpy(bond,bck_bond,sizeof(ts_bond));
+            for(i=0;i<4;i++){
+                free(bck_vtx[i]);
+                free(bck_tria[i]);
+    /*			fprintf(stderr,"Restoring vtx neigh[%d] with neighbours %d =",i, orig_vtx[i]->neigh_no );
+                for(j=0;j<orig_vtx[i]->neigh_no;j++) fprintf(stderr," %d", orig_vtx[i]->neigh[j]->idx);
+                fprintf(stderr,"\n"); */
+            }
+            free(bck_bond);
+            return TS_FAIL;
+        }
+        delta_energy+=delta_energy_cv;
+    }
+
+
 /* MONTE CARLO */
     if(delta_energy>=0){
 #ifdef TS_DOUBLE_DOUBLE
-        if(exp(-delta_energy)< drand48() )
+        if(exp(-delta_energy)< drand48())
 #endif
 #ifdef TS_DOUBLE_FLOAT
         if(expf(-delta_energy)< (ts_float)drand48())
@@ -150,15 +236,65 @@
 #endif
         {
             //not accepted, reverting changes
-//            fprintf(stderr,"Failed to move, due to MC\n");
+	    //restore all backups
+//		fprintf(stderr,"Restoring!!!\n");
+        if(vesicle->tape->constvolswitch == 1){
+            constvolumerestore(constvol_vtx_moved,constvol_vtx_backup);
+        }
 
-            ts_flip_bond(kp,km,k,it, bond, lm,lp,lm2,lp1);
-//    fprintf(stderr,"%e, %e, %e\n", lp->xnorm, lp->ynorm, lp->znorm);
-            return TS_FAIL;
+		for(i=0;i<4;i++){
+//			fprintf(stderr,"Restoring vtx neigh[%d] with neighbours %d\n",i, orig_vtx[i]->neigh_no );
+			free(orig_vtx[i]->neigh);
+			free(orig_vtx[i]->tristar);
+			free(orig_vtx[i]->bond);
+			free(orig_tria[i]->neigh);
+			memcpy((void *)orig_vtx[i],(void *)bck_vtx[i],sizeof(ts_vertex));
+			memcpy((void *)orig_tria[i],(void *)bck_tria[i],sizeof(ts_triangle));
+//			fprintf(stderr,"Restored vtx neigh[%d] with neighbours %d\n",i, orig_vtx[i]->neigh_no );
+			/* level 2 pointers are redirected*/
+		}
+		memcpy(bond,bck_bond,sizeof(ts_bond));
+
+		for(i=0;i<4;i++){
+			free(bck_vtx[i]);
+			free(bck_tria[i]);
+/*			fprintf(stderr,"Restoring vtx neigh[%d] with neighbours %d =",i, orig_vtx[i]->neigh_no );
+			for(j=0;j<orig_vtx[i]->neigh_no;j++) fprintf(stderr," %d", orig_vtx[i]->neigh[j]->idx);
+			fprintf(stderr,"\n"); */
+		}
+
+		free(bck_bond);
+
+//		fprintf(stderr,"Restoration complete!!!\n");
+//    vesicle_volume(vesicle);
+//    fprintf(stderr,"Volume after fail=%1.16e\n", vesicle->volume);
+
+		return TS_FAIL;
         }
     }
      /* IF BONDFLIP ACCEPTED, THEN RETURN SUCCESS! */
 //            fprintf(stderr,"SUCCESS!!!\n");
+
+    if(vesicle->tape->constvolswitch == 1){
+        constvolumeaccept(vesicle,constvol_vtx_moved,constvol_vtx_backup);
+    }
+	// delete all backups
+	for(i=0;i<4;i++){
+	free(bck_vtx[i]->neigh);
+	free(bck_vtx[i]->bond);
+	free(bck_vtx[i]->tristar);
+	free(bck_vtx[i]);
+ 	free(bck_tria[i]->neigh);
+        free(bck_tria[i]);
+/*	fprintf(stderr,"Afret backup deletion vtx neigh[%d]=",i);
+	for(j=0;j<orig_vtx[i]->neigh_no;j++) fprintf(stderr," %d", orig_vtx[i]->neigh[j]->idx);
+	fprintf(stderr,"\n");
+*/	
+	}
+	free(bck_bond);
+
+//    vesicle_volume(vesicle);
+//    fprintf(stderr,"Volume after success=%1.16e\n", vesicle->volume);
     return TS_SUCCESS;
 }
 

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