Trisurf Monte Carlo simulator
Samo Penic
2019-10-18 a69203a95d66595b80891aafc1ca8a59303290d0
src/vertexmove.c
@@ -21,7 +21,7 @@
    ts_double dist;
    ts_bool retval; 
    ts_uint cellidx; 
    ts_double delta_energy, delta_energy_cv,oenergy,dvol=0.0, darea=0.0;
    ts_double delta_energy, delta_energy_cv,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;
@@ -88,6 +88,14 @@
   }
}
   // 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;
      }
   }
//#undef SQ
//self avoidance check with distant vertices
   cellidx=vertex_self_avoidance(vesicle, vtx);
@@ -113,9 +121,13 @@
      for(i=0;i<vtx->tristar_no;i++) darea-=vtx->tristar[i]->area;
    
    }
   //stretching energy 1 of 3
   if(vesicle->tape->stretchswitch==1){
      for(i=0;i<vtx->tristar_no;i++) dstretchenergy-=vtx->tristar[i]->energy;
   }
    delta_energy=0;
//    vesicle_volume(vesicle);
//    fprintf(stderr,"Volume in the beginning=%1.16e\n", vesicle->volume);
@@ -189,6 +201,19 @@
    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);
   //stretching energy 2 of 3
   if(vesicle->tape->stretchswitch==1){
      for(i=0;i<vtx->tristar_no;i++){
         stretchenergy(vesicle, vtx->tristar[i]);
         dstretchenergy+=vtx->tristar[i]->energy;
         }
   }
   delta_energy+=dstretchenergy;
/* No poly-bond energy for now!
   if(vtx->grafted_poly!=NULL){
      delta_energy+=
@@ -196,6 +221,22 @@
         pow(sqrt(vtx_distance_sq(&backupvtx[0], vtx->grafted_poly->vlist->vtx[0])-1),2)) *vtx->grafted_poly->k;
   }
*/
// plane confinement energy due to compressing force
   if(vesicle->tape->plane_confinement_switch){
      if(vesicle->confinement_plane.force_switch){
         //substract old energy
         if(abs(vesicle->tape->plane_d/2.0-vesicle->confinement_plane.z_max)>1e-10) {
            delta_energy-=vesicle->tape->plane_F / pow(vesicle->confinement_plane.z_max-backupvtx[0].z,2);
            delta_energy+=vesicle->tape->plane_F / pow(vesicle->confinement_plane.z_max-vtx->z,2);
         }
         if(abs(-vesicle->tape->plane_d/2.0-vesicle->confinement_plane.z_min)>1e-10) {
            delta_energy-=vesicle->tape->plane_F / pow(vesicle->confinement_plane.z_min-backupvtx[0].z,2);
            delta_energy+=vesicle->tape->plane_F / pow(vesicle->confinement_plane.z_min-vtx->z,2);
         }
      }
   }
//   fprintf(stderr, "DE=%f\n",delta_energy);
    //MONTE CARLOOOOOOOO
//   if(vtx->c!=0.0) printf("DE=%f\n",delta_energy);
@@ -219,6 +260,12 @@
   
    //update the normals of triangles that share bead i.
   for(i=0;i<vtx->tristar_no;i++) triangle_normal_vector(vtx->tristar[i]);
   //stretching energy 3 of 3
   if(vesicle->tape->stretchswitch==1){
      for(i=0;i<vtx->tristar_no;i++){
         stretchenergy(vesicle,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){