Added constant volume plugin (partially)

Samo Penic

2019-03-08 77a2c7de0dd6563a30467fa2e73f02ec9f4c3deb

 src/vertexmove.c

@@ -20,7 +20,7 @@
    ts_uint i;
    ts_bool retval; 
    ts_uint cellidx; 
    ts_double delta_energy, delta_energy_cv,oenergy,dvol=0.0, darea=0.0, dstretchenergy=0.0;
    ts_double delta_energy, oenergy,dvol=0.0, darea=0.0, dstretchenergy=0.0;
    ts_double costheta,sintheta,phi,r;
   //This will hold all the information of vtx and its neighbours
    ts_vertex backupvtx[20], *constvol_vtx_moved=NULL, *constvol_vtx_backup=NULL;
@@ -35,34 +35,30 @@
    vtx->y=vtx->y+r*sintheta*sin(phi);
    vtx->z=vtx->z+r*costheta;

// plane confinement check whether the new position of vertex will be out of bounds
   if(vesicle->tape->plane_confinement_switch){
      if(vtx->z>vesicle->confinement_plane.z_max || vtx->z<vesicle->confinement_plane.z_min){
      vtx=memcpy((void *)vtx,(void *)&backupvtx[0],sizeof(ts_vertex));
      return TS_FAIL;
      }
   }

/* Entry point for plugin vm_hard_constraint() function */
   ts_plugin_chain *ptr=vesicle->plist->chain->vm_hard_constraint;
   while(ptr!=NULL){
      retval = ptr->plugin->function->vm_hard_constraint(vesicle,vtx, &backupvtx[0]);
   vesicle->plist->pointer=vesicle->plist->chain->vm_hard_constraint;
   while(vesicle->plist->pointer!=NULL){
      retval = vesicle->plist->pointer->plugin->function->vm_hard_constraint(vesicle,vtx, &backupvtx[0]);
      if(retval==TS_FAIL){
         vtx=memcpy((void *)vtx,(void *)&backupvtx[0],sizeof(ts_vertex));
         return TS_FAIL;
      }
      ptr=ptr->next;
      vesicle->plist->pointer=vesicle->plist->pointer->next;
   }
/* End of vm_hard_constraint() */


 
//if all the tests are successful, then energy for vtx and neighbours is calculated
/* Backuping the neighbours */ 
   for(i=0;i<vtx->neigh_no;i++){
   memcpy((void *)&backupvtx[i+1],(void *)vtx->neigh[i],sizeof(ts_vertex));
   }

   if(vesicle->pswitch == 1 || vesicle->tape->constvolswitch>0){
      for(i=0;i<vtx->tristar_no;i++) dvol-=vtx->tristar[i]->volume;
/* Entry point for plugin vm_energy_before_prepare() */

   vesicle->plist->pointer=vesicle->plist->chain->vm_energy_before_prepare;
   while(vesicle->plist->pointer!=NULL){
      vesicle->plist->pointer->plugin->function->vm_energy_before_prepare(vesicle, vtx);
      vesicle->plist->pointer=vesicle->plist->pointer->next;
   }

    if(vesicle->tape->constareaswitch==2){
@@ -91,10 +87,16 @@
        delta_energy+=vtx->neigh[i]->xk*(vtx->neigh[i]->energy-oenergy);
    }

   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;
   };

/* Entry point for plugin vm_energy_after_execute() */

   vesicle->plist->pointer=vesicle->plist->chain->vm_energy_after_execute;
   while(vesicle->plist->pointer!=NULL){
      delta_energy+=vesicle->plist->pointer->plugin->function->vm_energy_after_execute(vesicle, vtx);
      vesicle->plist->pointer=vesicle->plist->pointer->next;
   }



    if(vesicle->tape->constareaswitch==2){
        /* check whether the darea is gt epsarea */
@@ -113,42 +115,6 @@

    }

   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
            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;
        }
//    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);
    }
/* Vertices with spontaneous curvature may have spontaneous force perpendicular to the surface of the vesicle. additional delta energy is calculated in this function */
   delta_energy+=direct_force_energy(vesicle,vtx,backupvtx);

@@ -185,9 +151,29 @@
      }
   }


/* Entry point for plugin vm_before_montecarlo_constraint() function */
   vesicle->plist->pointer=vesicle->plist->chain->vm_before_montecarlo_constraint;
   while(vesicle->plist->pointer!=NULL){
      retval = vesicle->plist->pointer->plugin->function->vm_before_montecarlo_constraint(vesicle,vtx, &backupvtx[0]);
      if(retval==TS_FAIL){
         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]); 
         return TS_FAIL;
      }
      vesicle->plist->pointer=vesicle->plist->pointer->next;
   }
/* End of vm_before_montecarlo_constraint() */





//   fprintf(stderr, "DE=%f\n",delta_energy);
    //MONTE CARLOOOOOOOO
//   if(vtx->c!=0.0) printf("DE=%f\n",delta_energy);
    if(delta_energy>=0){
#ifdef TS_DOUBLE_DOUBLE
        if(exp(-delta_energy)< drand48())