Trisurf Monte Carlo simulator
Samo Penic
2010-11-26 d7639a9b92bef4ee43ed2d3241e7d147d2e81e80
commit | author | age
d7639a 1 #include<stdlib.h>
SP 2 #include "general.h"
3 #include "vertex.h"
4 #include <stdio.h>
5 ts_bool init_cell_list(ts_cell_list *clist, ts_double stepsize){
6     ts_uint i;
7     ts_uint nocells=clist->ncmax[0]*clist->ncmax[1]*clist->ncmax[2];
8     clist->cell=malloc(nocells*sizeof(ts_cell));
9     clist->dcell=1.0/(1.0 + stepsize);
10     clist->shift=(ts_double) clist->ncmax[0]/2;
11     clist->cellno=nocells;
12     for(i=0;i<nocells;i++){
13         clist->cell[i].idx=i+1; // We enumerate cells! Probably never required!
14         clist->cell[i].nvertex=0;
15         clist->cell[i].vertex=NULL;
16     }
17     return TS_SUCCESS;
18 }
19
20 ts_bool cell_list_free(ts_cell_list *clist){
21     ts_uint i;
22      ts_uint nocells=clist->ncmax[0]*clist->ncmax[1]*clist->ncmax[2];
23
24     for(i=0;i<nocells;i++)
25          if(clist->cell->vertex != NULL) free(clist->cell->vertex);
26     free(clist->cell);
27
28     return TS_SUCCESS;
29 }
30
31 inline ts_uint vertex_self_avoidance(ts_vesicle *vesicle, ts_vertex *vtx){
32     ts_uint i,cellidx;
33     ts_uint ncx, ncy,ncz;
34
35     ncx=(ts_uint)((vtx->x-vesicle->cm[0])*vesicle->clist.dcell+vesicle->clist.shift);
36     ncy=(ts_uint)((vtx->y-vesicle->cm[1])*vesicle->clist.dcell+vesicle->clist.shift);
37     ncz=(ts_uint)((vtx->z-vesicle->cm[2])*vesicle->clist.dcell+vesicle->clist.shift);
38 //    fprintf(stderr,"(ncx,ncy,ncz)=(%i %i %i)\t",ncx,ncy,ncz);
39 //    fprintf(stderr,"(ncxmax,ncymax,nczmax)=(%i %i %i)\n",vesicle->clist.ncmax[0], vesicle->clist.ncmax[1], vesicle->clist.ncmax[2]);
40     if(ncx == vesicle->clist.ncmax[0]-1 || ncx == 2){
41         fatal("Vesicle is positioned outside the cell covered area. Coordinate x is the problem.",1500);
42     }
43     if(ncy == vesicle->clist.ncmax[1]-1 || ncy == 2){
44         fatal("Vesicle is positioned outside the cell covered area. Coordinate y is the problem.",1500);
45     }
46     if(ncz == vesicle->clist.ncmax[2]-1 || ncz == 2){
47         fatal("Vesicle is positioned outside the cell covered area. Coordinate z is the problem.",1500);
48     }
49     cellidx=ncz+(ncy-1)*vesicle->clist.ncmax[2] +
50 (ncx-1)*vesicle->clist.ncmax[2]* vesicle->clist.ncmax[1] - 1; // -1 is because of 0 based indexing
51     return cellidx;
52 }
53
54
55
56 ts_bool cell_add_vertex(ts_cell *cell, ts_vertex *vtx){
57     
58     cell->nvertex++;
59     cell->vertex=realloc(cell->vertex,cell->nvertex*sizeof(ts_vertex *));
60         if(vtx->neigh == NULL){
61             fatal("Reallocation of memory failed during insertion of vertex neighbour in vertex_add_neighbour",3);
62         }
63     cell->vertex[cell->nvertex-1]=vtx;
64
65     return TS_SUCCESS;
66 }
67
68 ts_bool cell_list_cell_ocupation_clear(ts_cell_list *clist){
69     ts_uint i;
70     for(i=0;i<clist->cellno;i++){
71         if(clist->cell[i].vertex != NULL){
72             free(clist->cell[i].vertex);
73             clist->cell[i].vertex=NULL;
74         }
75         clist->cell[i].nvertex=0;
76     }
77     return TS_SUCCESS;
78 }
79
80 ts_bool cell_occupation_number_and_internal_proximity(ts_cell_list *clist, ts_uint cellidx, ts_vertex *vtx, ts_vertex *tvtx){
81     ts_uint ncx,ncy,ncz,remainder,cell_occupation;
82     ts_uint i,j,k,l,neigh_cidx,mcell;
83     ts_double dist;
84     ncx=(cellidx+1)/(clist->ncmax[2]*clist->ncmax[1])+1;
85     remainder=(cellidx+1)%(clist->ncmax[2]*clist->ncmax[1]);
86     ncy=remainder/clist->ncmax[2]+1;
87     ncz=remainder%clist->ncmax[2];
88 //    fprintf(stderr,"here are ncx,ncy,ncz=%i,%i,%i\n",ncx,ncy,ncz);
89
90     for(i=ncx-1;i<=ncx+1;i++){
91         for(j=ncy-1;j<=ncy+1;j++){
92             for(k=ncz-1;k<=ncz+1;k++){
93                 neigh_cidx=k+(j-1)*clist->ncmax[2]+(i-1)*clist->ncmax[2]*clist->ncmax[1] -1;
94           //      fprintf(stderr,"neigh_cell_index=%i\n",neigh_cidx);
95                 cell_occupation=clist->cell[neigh_cidx].nvertex;
96           //      fprintf(stderr, "cell_occupation=%i\n",cell_occupation);
97                 if(cell_occupation>clist->max_occupancy){
98                     fatal("Neighbouring cell occupation more than set max_occupancy value.",2000);
99                 }
100 // Now we check whether we didn't come close to some other vertices in the same
101 // cell!
102                 if(cell_occupation>1){
103                     for(l=0;l<cell_occupation;l++){
104                         if(clist->cell[neigh_cidx].vertex[l]!=vtx){
105                     //        fprintf(stderr,"calling dist on vertex %i\n",l);
106                            dist=vertex_distance_sq(clist->cell[neigh_cidx].vertex[l],tvtx);
107                     //        fprintf(stderr,"dist was %f\n",dist);
108                             if(dist<1) return TS_FAIL;
109                         }
110                     }
111                 }
112             }
113         }
114     }
115     
116     return TS_SUCCESS;
117 }