From b2fa8c6b55c420c079f285224f8d56ed03939767 Mon Sep 17 00:00:00 2001
From: Samo Penic <samo.penic@fe.uni-lj.si>
Date: Tue, 29 Apr 2014 18:13:26 +0000
Subject: [PATCH] Bondflip doesnt segfaults anymore. Bondflip is disabled, debugging vertexmove

---
 src/constvol.c   |   21 +++++++++++++++++++--
 src/timestep.c   |    7 ++++---
 src/bondflip.c   |   22 +++++++++-------------
 src/vertexmove.c |    2 +-
 4 files changed, 33 insertions(+), 19 deletions(-)

diff --git a/src/bondflip.c b/src/bondflip.c
index 31836e8..1a21d92 100644
--- a/src/bondflip.c
+++ b/src/bondflip.c
@@ -189,9 +189,8 @@
 		if(vesicle->pswitch==1) delta_energy-= vesicle->pressure*dvol;
 	}
 
-    retval=TS_SUCCESS;
     if(vesicle->tape->constvolswitch == 1){
-        retval=constvolume(vesicle, it, -dvol, &delta_energy_cv, &constvol_vtx_moved,&constvol_vtx_backup);
+        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++){
@@ -206,7 +205,6 @@
 			/* 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]);
@@ -214,13 +212,11 @@
 			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;
+
+        delta_energy+=delta_energy_cv;
     }
 
 
@@ -239,6 +235,9 @@
             //not accepted, reverting changes
 	    //restore all backups
 //		fprintf(stderr,"Restoring!!!\n");
+        if(vesicle->tape->constvolswitch == 1){
+            constvolumerestore(constvol_vtx_moved,constvol_vtx_backup);
+        }
 
 		for(i=0;i<4;i++){
 //			fprintf(stderr,"Restoring vtx neigh[%d] with neighbours %d\n",i, orig_vtx[i]->neigh_no );
@@ -263,9 +262,6 @@
 
 		free(bck_bond);
 
-        if(vesicle->tape->constvolswitch == 1){
-            constvolumerestore(constvol_vtx_moved,constvol_vtx_backup);
-        }
 //		fprintf(stderr,"Restoration complete!!!\n");
 
 		return TS_FAIL;
@@ -274,6 +270,9 @@
      /* 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);
@@ -288,9 +287,6 @@
 */	
 	}
 	free(bck_bond);
-    if(vesicle->tape->constvolswitch == 1){
-        constvolumeaccept(vesicle,constvol_vtx_moved,constvol_vtx_backup);
-    }
 
     return TS_SUCCESS;
 }
diff --git a/src/constvol.c b/src/constvol.c
index 7a7669a..33922b4 100644
--- a/src/constvol.c
+++ b/src/constvol.c
@@ -15,7 +15,6 @@
     ts_uint Ntries=20;
 	ts_vertex *backupvtx;
     ts_double Rv, dh, dvol, voldiff, oenergy,delta_energy;
-
     backupvtx=(ts_vertex *)calloc(sizeof(ts_vertex),10);
     ts_double l0 = (1.0 + sqrt(vesicle->dmax))/2.0; //make this a global constant if necessary
     for(i=0;i<Ntries;i++){
@@ -25,6 +24,11 @@
 
         for(j=0;j<vtx_moved->neigh_no;j++){
             if(vtx_moved->neigh[j]==vtx_avoid) continue;
+/*            for(k=0;k<vtx_moved->neigh[j]->neigh_no;k++){
+                if(vtx_moved->neigh[j]->neigh[k]==vtx_avoid) continue;
+            }   
+*/
+
         }
          
 	    memcpy((void *)&backupvtx[0],(void *)vtx_moved,sizeof(ts_vertex));
@@ -46,8 +50,8 @@
 //        fprintf(stderr,"Sprejet.\n");
 
         // All checks OK!
+            fprintf(stderr, "Step 1 success\n");
 
-        // doing second and final move.
         for(j=0;j<vtx_moved->neigh_no;j++){
         	memcpy((void *)&backupvtx[j+1],(void *)vtx_moved->neigh[j],sizeof(ts_vertex));
 	    }
@@ -74,8 +78,10 @@
             *retEnergy=delta_energy;
             *vtx_backup=backupvtx;
             *vtx_moved_retval=vtx_moved;
+            fprintf(stderr, "Preliminary success\n");
             return TS_SUCCESS;
         }        
+            fprintf(stderr, "Step 2 success\n");
         //do it again ;)
         dh=Vol*dh/dvol;
 		vtx_moved=memcpy((void *)vtx_moved,(void *)&backupvtx[0],sizeof(ts_vertex));
@@ -91,7 +97,16 @@
             continue;
         }
 
+        dvol=0.0;
+        for(j=0;j<vtx_moved->tristar_no;j++){
+            dvol-=vtx_moved->tristar[j]->volume;
+            triangle_normal_vector(vtx_moved->tristar[j]);
+            dvol+=vtx_moved->tristar[j]->volume;
+        }
+
+            fprintf(stderr, "Step 3a success voldiff=%e\n",voldiff);
         voldiff=dvol-Vol;
+            fprintf(stderr, "Step 3b success voldiff=%e\n",voldiff);
         if(fabs(voldiff)/vesicle->volume < vesicle->tape->constvolprecision){
             //calculate energy, return change in energy...
             oenergy=vtx_moved->energy;
@@ -106,12 +121,14 @@
             *retEnergy=delta_energy;
             *vtx_backup=backupvtx;
             *vtx_moved_retval=vtx_moved;
+            fprintf(stderr, "DVOL=%e\n",voldiff);
             return TS_SUCCESS;
         }        
 
 
     }
     free(backupvtx);
+            fprintf(stderr, "fail\n");
     return TS_FAIL;
 }
 
diff --git a/src/timestep.c b/src/timestep.c
index a8f0f94..2ecc30b 100644
--- a/src/timestep.c
+++ b/src/timestep.c
@@ -88,7 +88,7 @@
 ts_bool single_timestep(ts_vesicle *vesicle,ts_double *vmsr, ts_double *bfsr){
     ts_bool retval;
     ts_double rnvec[3];
-    ts_uint i,j,b;
+    ts_uint i,j;//b;
     ts_uint vmsrcnt=0;
     for(i=0;i<vesicle->vlist->n;i++){
         rnvec[0]=drand48();
@@ -100,10 +100,11 @@
 
 	ts_int bfsrcnt=0;
     for(i=0;i<3*vesicle->vlist->n;i++){
-	b=rand() % vesicle->blist->n;
+//	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);
+     //   retval=single_bondflip_timestep(vesicle,vesicle->blist->bond[b],rnvec);
+    retval=TS_FAIL;
 	if(retval==TS_SUCCESS) bfsrcnt++;        
     }
 
diff --git a/src/vertexmove.c b/src/vertexmove.c
index 83b28cd..9f263c8 100644
--- a/src/vertexmove.c
+++ b/src/vertexmove.c
@@ -119,7 +119,7 @@
 	};
 
    if(vesicle->tape->constvolswitch == 1){
-        retval=constvolume(vesicle, vtx, -dvol, &delta_energy_cv, &constvol_vtx_moved,&constvol_vtx_backup);
+        retval=constvolume(vesicle, vtx, dvol, &delta_energy_cv, &constvol_vtx_moved,&constvol_vtx_backup);
         if(retval==TS_FAIL){ // if we couldn't move the vertex to assure constant volume
             vtx=memcpy((void *)vtx,(void *)&backupvtx[0],sizeof(ts_vertex));
 	        for(i=0;i<vtx->neigh_no;i++){

--
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