From 1121faa13a2038facad22073f0fc610903d98691 Mon Sep 17 00:00:00 2001
From: Samo Penic <samo@CAE-linux.(none)>
Date: Fri, 05 Sep 2014 20:18:05 +0000
Subject: [PATCH] First variant of constant volume constrant (a new one proposed by Miha after reading his article). It seems to work, however there are still some things to be done, such as Miha's derivation of the epsvol (0.003% is used at the moment) and solving the problem of additional global variables.
---
src/bondflip.c | 37 +++++++++++++++++++++++++++++++++++--
1 files changed, 35 insertions(+), 2 deletions(-)
diff --git a/src/bondflip.c b/src/bondflip.c
index 3a31a28..4c8b50c 100644
--- a/src/bondflip.c
+++ b/src/bondflip.c
@@ -169,7 +169,7 @@
oldenergy+=it->xk* it->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;}
+ if(vesicle->pswitch == 1 || vesicle->tape->constvolswitch>0){dvol = -lm->volume - lp->volume;}
/* vesicle_volume(vesicle);
fprintf(stderr,"Volume in the beginning=%1.16e\n", vesicle->volume);
@@ -188,11 +188,41 @@
//Neigbours of k, it, km, kp don't change its energy.
delta_energy-=oldenergy;
- if(vesicle->pswitch == 1 || vesicle->tape->constvolswitch==1){
+ if(vesicle->pswitch == 1 || vesicle->tape->constvolswitch>0){
dvol = dvol + lm->volume + lp->volume;
if(vesicle->pswitch==1) delta_energy-= vesicle->pressure*dvol;
}
+ if(vesicle->tape->constvolswitch == 2){
+ /*check whether the dvol is gt than epsvol */
+ if(fabs(vesicle->volume+dvol-V0)>epsvol){
+ //restore old state.
+ /* 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;
+
+ }
+
+ } else
if(vesicle->tape->constvolswitch == 1){
retval=constvolume(vesicle, it, -dvol, &delta_energy_cv, &constvol_vtx_moved,&constvol_vtx_backup);
if(retval==TS_FAIL){
@@ -275,6 +305,9 @@
/* IF BONDFLIP ACCEPTED, THEN RETURN SUCCESS! */
// fprintf(stderr,"SUCCESS!!!\n");
+ if(vesicle->tape->constvolswitch == 2){
+ vesicle->volume+=dvol;
+ } else
if(vesicle->tape->constvolswitch == 1){
constvolumeaccept(vesicle,constvol_vtx_moved,constvol_vtx_backup);
}
--
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