From a549778bfece819cf0b599168c571e400e6eb67d Mon Sep 17 00:00:00 2001
From: Samo Penic <samo.penic@fe.uni-lj.si>
Date: Wed, 10 Sep 2014 07:03:15 +0000
Subject: [PATCH] Added calculation of epsV.

---
 src/vertexmove.c |   46 ++++++++++++++++++++++++++++++++++++++++------
 1 files changed, 40 insertions(+), 6 deletions(-)

diff --git a/src/vertexmove.c b/src/vertexmove.c
index 83b28cd..28a8880 100644
--- a/src/vertexmove.c
+++ b/src/vertexmove.c
@@ -92,14 +92,14 @@
 	memcpy((void *)&backupvtx[i+1],(void *)vtx->neigh[i],sizeof(ts_vertex));
 	}
 
-	if(vesicle->pswitch == 1 || vesicle->tape->constvolswitch==1){
+	if(vesicle->pswitch == 1 || vesicle->tape->constvolswitch>0){
 		for(i=0;i<vtx->tristar_no;i++) dvol-=vtx->tristar[i]->volume;
 	};
 
     delta_energy=0;
-
- 
-//    fprintf(stderr,"Success for now.\n");
+    
+//    vesicle_volume(vesicle);
+//    fprintf(stderr,"Volume in the beginning=%1.16e\n", vesicle->volume);
 
     //update the normals of triangles that share bead i.
     for(i=0;i<vtx->tristar_no;i++) triangle_normal_vector(vtx->tristar[i]);
@@ -113,11 +113,29 @@
         delta_energy+=vtx->neigh[i]->xk*(vtx->neigh[i]->energy-oenergy);
     }
 
-	if(vesicle->pswitch == 1 || vesicle->tape->constvolswitch == 1){
+	if(vesicle->pswitch == 1 || vesicle->tape->constvolswitch >0){
 		for(i=0;i<vtx->tristar_no;i++) dvol+=vtx->tristar[i]->volume;
         if(vesicle->pswitch==1) delta_energy-=vesicle->pressure*dvol;
 	};
 
+
+	if(vesicle->tape->constvolswitch==2){
+		/*check whether the dvol is gt than epsvol */
+			//fprintf(stderr,"DVOL=%1.16e\n",dvol);
+		if(fabs(vesicle->volume+dvol-V0)>epsvol){
+			//restore old state.
+ 			vtx=memcpy((void *)vtx,(void *)&backupvtx[0],sizeof(ts_vertex));
+	        	for(i=0;i<vtx->neigh_no;i++){
+		        	vtx->neigh[i]=memcpy((void *)vtx->neigh[i],(void *)&backupvtx[i+1],sizeof(ts_vertex));
+	        	}
+            		for(i=0;i<vtx->tristar_no;i++) triangle_normal_vector(vtx->tristar[i]); 
+            		//fprintf(stderr,"fajlam!\n");
+            		return TS_FAIL;
+		}
+
+	} else
+//    vesicle_volume(vesicle);
+//    fprintf(stderr,"Volume before=%1.16e\n", vesicle->volume);
    if(vesicle->tape->constvolswitch == 1){
         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
@@ -126,9 +144,16 @@
 		        vtx->neigh[i]=memcpy((void *)vtx->neigh[i],(void *)&backupvtx[i+1],sizeof(ts_vertex));
 	        }
             for(i=0;i<vtx->tristar_no;i++) triangle_normal_vector(vtx->tristar[i]); 
+ //           fprintf(stderr,"fajlam!\n");
             return TS_FAIL;
         }
+//    vesicle_volume(vesicle);
+//    fprintf(stderr,"Volume after=%1.16e\n", vesicle->volume);
+//    fprintf(stderr,"Volume after-dvol=%1.16e\n", vesicle->volume-dvol);
+//    fprintf(stderr,"Denergy before=%e\n",delta_energy);
+    
     delta_energy+=delta_energy_cv;
+//    fprintf(stderr,"Denergy after=%e\n",delta_energy);
     }
 /* No poly-bond energy for now!
 	if(vtx->grafted_poly!=NULL){
@@ -141,7 +166,7 @@
     //MONTE CARLOOOOOOOO
     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())
@@ -160,9 +185,13 @@
     //update the normals of triangles that share bead i.
    for(i=0;i<vtx->tristar_no;i++) triangle_normal_vector(vtx->tristar[i]);
 
+//    fprintf(stderr, "before vtx(x,y,z)=%e,%e,%e\n",constvol_vtx_moved->x, constvol_vtx_moved->y, constvol_vtx_moved->z);
     if(vesicle->tape->constvolswitch == 1){
         constvolumerestore(constvol_vtx_moved,constvol_vtx_backup);
     }
+//    fprintf(stderr, "after vtx(x,y,z)=%e,%e,%e\n",constvol_vtx_moved->x, constvol_vtx_moved->y, constvol_vtx_moved->z);
+//    vesicle_volume(vesicle);
+//    fprintf(stderr,"Volume after fail=%1.16e\n", vesicle->volume);
     return TS_FAIL; 
     }
 }
@@ -176,11 +205,16 @@
 		
 	}
 
+    if(vesicle->tape->constvolswitch == 2){
+	vesicle->volume+=dvol;
+    } else
     if(vesicle->tape->constvolswitch == 1){
         constvolumeaccept(vesicle,constvol_vtx_moved,constvol_vtx_backup);
     }
 //	if(oldcellidx);
     //END MONTE CARLOOOOOOO
+//    vesicle_volume(vesicle);
+//    fprintf(stderr,"Volume after success=%1.16e\n", vesicle->volume);
     return TS_SUCCESS;
 }
 

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