| | |
| | | #include "timestep.h" |
| | | #include "cell.h" |
| | | //#include "io.h" |
| | | #include "io.h" |
| | | #include<stdio.h> |
| | | #include "vertexmove.h" |
| | | #include <string.h> |
| | | #include "constvol.h" |
| | | |
| | | ts_bool single_verticle_timestep(ts_vesicle *vesicle,ts_vertex *vtx,ts_double *rn){ |
| | | ts_uint i; |
| | | ts_double dist; |
| | | ts_bool retval; |
| | | ts_uint cellidx; |
| | | ts_double delta_energy,oenergy,dvol=0.0; |
| | | ts_double delta_energy, delta_energy_cv,oenergy,dvol=0.0; |
| | | ts_double costheta,sintheta,phi,r; |
| | | //This will hold all the information of vtx and its neighbours |
| | | ts_vertex backupvtx[20]; |
| | | ts_vertex backupvtx[20], *constvol_vtx_moved=NULL, *constvol_vtx_backup=NULL; |
| | | memcpy((void *)&backupvtx[0],(void *)vtx,sizeof(ts_vertex)); |
| | | |
| | | //Some stupid tests for debugging cell occupation! |
| | |
| | | } |
| | | } |
| | | |
| | | //self avoidance check with distant vertices |
| | | cellidx=vertex_self_avoidance(vesicle, vtx); |
| | | //check occupation number |
| | | retval=cell_occupation_number_and_internal_proximity(vesicle->clist,cellidx,vtx); |
| | | |
| | | // TODO: Maybe faster if checks only nucleus-neighboring cells |
| | | // Nucleus penetration check: |
| | | if (vtx->x*vtx->x + vtx->y*vtx->y + vtx->z*vtx->z < vesicle->R_nucleus){ |
| | | vtx=memcpy((void *)vtx,(void *)&backupvtx[0],sizeof(ts_vertex)); |
| | | return TS_FAIL; |
| | | } |
| | | |
| | | //self avoidance check with distant vertices |
| | | cellidx=vertex_self_avoidance(vesicle, vtx); |
| | | //check occupation number |
| | | retval=cell_occupation_number_and_internal_proximity(vesicle->clist,cellidx,vtx); |
| | | |
| | | if(retval==TS_FAIL){ |
| | | vtx=memcpy((void *)vtx,(void *)&backupvtx[0],sizeof(ts_vertex)); |
| | | return TS_FAIL; |
| | |
| | | memcpy((void *)&backupvtx[i+1],(void *)vtx->neigh[i],sizeof(ts_vertex)); |
| | | } |
| | | |
| | | if(vesicle->pswitch == 1){ |
| | | if(vesicle->pswitch == 1 || vesicle->tape->constvolswitch==1){ |
| | | for(i=0;i<vtx->tristar_no;i++) dvol-=vtx->tristar[i]->volume; |
| | | }; |
| | | |
| | | delta_energy=0; |
| | | |
| | | |
| | | // fprintf(stderr,"Success for now.\n"); |
| | | |
| | | //update the normals of triangles that share bead i. |
| | | for(i=0;i<vtx->tristar_no;i++) triangle_normal_vector(vtx->tristar[i]); |
| | | oenergy=vtx->energy; |
| | |
| | | delta_energy+=vtx->neigh[i]->xk*(vtx->neigh[i]->energy-oenergy); |
| | | } |
| | | |
| | | if(vesicle->pswitch == 1){ |
| | | if(vesicle->pswitch == 1 || vesicle->tape->constvolswitch == 1){ |
| | | for(i=0;i<vtx->tristar_no;i++) dvol+=vtx->tristar[i]->volume; |
| | | delta_energy-=vesicle->pressure*dvol; |
| | | if(vesicle->pswitch==1) delta_energy-=vesicle->pressure*dvol; |
| | | }; |
| | | |
| | | 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]); |
| | | return TS_FAIL; |
| | | } |
| | | delta_energy+=delta_energy_cv; |
| | | } |
| | | /* No poly-bond energy for now! |
| | | if(vtx->grafted_poly!=NULL){ |
| | | delta_energy+= |
| | |
| | | #endif |
| | | { |
| | | //not accepted, reverting changes |
| | | // fprintf(stderr,"MC failed\n"); |
| | | 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)); |
| | |
| | | //update the normals of triangles that share bead i. |
| | | for(i=0;i<vtx->tristar_no;i++) triangle_normal_vector(vtx->tristar[i]); |
| | | |
| | | if(vesicle->tape->constvolswitch == 1){ |
| | | constvolumerestore(constvol_vtx_moved,constvol_vtx_backup); |
| | | } |
| | | return TS_FAIL; |
| | | } |
| | | } |
| | | |
| | | //accepted |
| | | // fprintf(stderr,"MC accepted\n"); |
| | | // oldcellidx=vertex_self_avoidance(vesicle, &backupvtx[0]); |
| | | if(vtx->cell!=vesicle->clist->cell[cellidx]){ |
| | | retval=cell_add_vertex(vesicle->clist->cell[cellidx],vtx); |
| | |
| | | if(retval==TS_SUCCESS) cell_remove_vertex(backupvtx[0].cell,vtx); |
| | | |
| | | } |
| | | |
| | | if(vesicle->tape->constvolswitch == 1){ |
| | | constvolumeaccept(vesicle,constvol_vtx_moved,constvol_vtx_backup); |
| | | } |
| | | // if(oldcellidx); |
| | | //END MONTE CARLOOOOOOO |
| | | return TS_SUCCESS; |
| | |
| | | //END MONTE CARLOOOOOOO |
| | | return TS_SUCCESS; |
| | | } |
| | | |
| | | |
| | | |
| | | |
| | | ts_bool single_filament_vertex_move(ts_vesicle *vesicle,ts_poly *poly,ts_vertex *vtx,ts_double *rn){ |
| | | ts_uint i; |
| | | ts_bool retval; |
| | | ts_uint cellidx; |
| | | ts_double delta_energy; |
| | | ts_double costheta,sintheta,phi,r; |
| | | ts_double dist[2]; |
| | | //This will hold all the information of vtx and its neighbours |
| | | ts_vertex backupvtx,backupneigh[2]; |
| | | ts_bond backupbond[2]; |
| | | |
| | | //backup vertex: |
| | | memcpy((void *)&backupvtx,(void *)vtx,sizeof(ts_vertex)); |
| | | |
| | | //random move in a sphere with radius stepsize: |
| | | r=vesicle->stepsize*rn[0]; |
| | | phi=rn[1]*2*M_PI; |
| | | costheta=2*rn[2]-1; |
| | | sintheta=sqrt(1-pow(costheta,2)); |
| | | vtx->x=vtx->x+r*sintheta*cos(phi); |
| | | vtx->y=vtx->y+r*sintheta*sin(phi); |
| | | vtx->z=vtx->z+r*costheta; |
| | | |
| | | |
| | | //distance with neighbours check |
| | | for(i=0;i<vtx->bond_no;i++){ |
| | | dist[i]=vtx_distance_sq(vtx->bond[i]->vtx1,vtx->bond[i]->vtx2); |
| | | if(dist[i]<1.0 || dist[i]>vesicle->dmax) { |
| | | vtx=memcpy((void *)vtx,(void *)&backupvtx,sizeof(ts_vertex)); |
| | | return TS_FAIL; |
| | | } |
| | | } |
| | | |
| | | // TODO: Maybe faster if checks only nucleus-neighboring cells |
| | | // Nucleus penetration check: |
| | | if (vtx->x*vtx->x + vtx->y*vtx->y + vtx->z*vtx->z < vesicle->R_nucleus){ |
| | | vtx=memcpy((void *)vtx,(void *)&backupvtx,sizeof(ts_vertex)); |
| | | return TS_FAIL; |
| | | } |
| | | |
| | | |
| | | //self avoidance check with distant vertices |
| | | cellidx=vertex_self_avoidance(vesicle, vtx); |
| | | //check occupation number |
| | | retval=cell_occupation_number_and_internal_proximity(vesicle->clist,cellidx,vtx); |
| | | if(retval==TS_FAIL){ |
| | | vtx=memcpy((void *)vtx,(void *)&backupvtx,sizeof(ts_vertex)); |
| | | return TS_FAIL; |
| | | } |
| | | |
| | | //backup bonds |
| | | for(i=0;i<vtx->bond_no;i++){ |
| | | memcpy(&backupbond[i],vtx->bond[i], sizeof(ts_bond)); |
| | | vtx->bond[i]->bond_length=sqrt(dist[i]); |
| | | bond_vector(vtx->bond[i]); |
| | | } |
| | | |
| | | //backup neighboring vertices: |
| | | for(i=0;i<vtx->neigh_no;i++){ |
| | | memcpy(&backupneigh[i],vtx->neigh[i], sizeof(ts_vertex)); |
| | | } |
| | | |
| | | //if all the tests are successful, then energy for vtx and neighbours is calculated |
| | | delta_energy=0; |
| | | |
| | | if(vtx->bond_no == 2){ |
| | | vtx->energy = -(vtx->bond[0]->x*vtx->bond[1]->x + vtx->bond[0]->y*vtx->bond[1]->y + vtx->bond[0]->z*vtx->bond[1]->z)/vtx->bond[0]->bond_length/vtx->bond[1]->bond_length; |
| | | delta_energy += vtx->energy - backupvtx.energy; |
| | | } |
| | | |
| | | for(i=0;i<vtx->neigh_no;i++){ |
| | | if(vtx->neigh[i]->bond_no == 2){ |
| | | vtx->neigh[i]->energy = -(vtx->neigh[i]->bond[0]->x*vtx->neigh[i]->bond[1]->x + vtx->neigh[i]->bond[0]->y*vtx->neigh[i]->bond[1]->y + vtx->neigh[i]->bond[0]->z*vtx->neigh[i]->bond[1]->z)/vtx->neigh[i]->bond[0]->bond_length/vtx->neigh[i]->bond[1]->bond_length; |
| | | delta_energy += vtx->neigh[i]->energy - backupneigh[i].energy; |
| | | } |
| | | } |
| | | |
| | | // poly->k is filament persistence length (in units l_min) |
| | | delta_energy *= poly->k; |
| | | |
| | | if(delta_energy>=0){ |
| | | #ifdef TS_DOUBLE_DOUBLE |
| | | if(exp(-delta_energy)< drand48() ) |
| | | #endif |
| | | #ifdef TS_DOUBLE_FLOAT |
| | | if(expf(-delta_energy)< (ts_float)drand48()) |
| | | #endif |
| | | #ifdef TS_DOUBLE_LONGDOUBLE |
| | | if(expl(-delta_energy)< (ts_ldouble)drand48()) |
| | | #endif |
| | | { |
| | | //not accepted, reverting changes |
| | | vtx=memcpy((void *)vtx,(void *)&backupvtx,sizeof(ts_vertex)); |
| | | for(i=0;i<vtx->neigh_no;i++){ |
| | | memcpy(vtx->neigh[i],&backupneigh[i],sizeof(ts_vertex)); |
| | | } |
| | | for(i=0;i<vtx->bond_no;i++){ |
| | | vtx->bond[i]=memcpy((void *)vtx->bond[i],(void *)&backupbond[i],sizeof(ts_bond)); |
| | | } |
| | | |
| | | return TS_FAIL; |
| | | } |
| | | } |
| | | |
| | | |
| | | // oldcellidx=vertex_self_avoidance(vesicle, &backupvtx[0]); |
| | | if(vtx->cell!=vesicle->clist->cell[cellidx]){ |
| | | retval=cell_add_vertex(vesicle->clist->cell[cellidx],vtx); |
| | | // if(retval==TS_SUCCESS) cell_remove_vertex(vesicle->clist->cell[oldcellidx],vtx); |
| | | if(retval==TS_SUCCESS) cell_remove_vertex(backupvtx.cell,vtx); |
| | | } |
| | | // if(oldcellidx); |
| | | //END MONTE CARLOOOOOOO |
| | | return TS_SUCCESS; |
| | | } |