#include<stdlib.h>
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#include "general.h"
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#include "vertex.h"
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ts_cell_list *init_cell_list(ts_uint ncmax1, ts_uint ncmax2, ts_uint ncmax3, ts_double stepsize){
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ts_uint i;
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ts_uint nocells=ncmax1*ncmax2*ncmax3;
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ts_cell_list *clist=(ts_cell_list *)malloc(sizeof(ts_cell_list));
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if(clist==NULL) fatal("Error while allocating memory for cell list!",100);
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clist->ncmax[0]=ncmax1;
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clist->ncmax[1]=ncmax2;
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clist->ncmax[2]=ncmax3;
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clist->cellno=nocells;
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clist->dcell=1.0/(1.0 + stepsize);
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clist->shift=(ts_double) clist->ncmax[0]/2;
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clist->cell=(ts_cell **)malloc(nocells*sizeof(ts_cell *));
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if(clist->cell==NULL) fatal("Error while allocating memory for cell list! ncmax too large?",101);
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for(i=0;i<nocells;i++){
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clist->cell[i]=(ts_cell *)calloc(1,sizeof(ts_cell));
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if(clist->cell[i]==NULL) fatal("Error while allocating memory for cell list! ncmax too large?",102);
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clist->cell[i]->idx=i+1; // We enumerate cells! Probably never required!
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}
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return clist;
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}
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ts_bool cell_free(ts_cell* cell){
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if(cell->vertex!=NULL) free(cell->vertex);
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free(cell);
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return TS_SUCCESS;
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}
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ts_bool cell_list_free(ts_cell_list *clist){
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ts_uint i;
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if(clist==NULL) return TS_FAIL;
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ts_uint nocells=clist->cellno;
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for(i=0;i<nocells;i++)
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if(clist->cell[i] != NULL) cell_free(clist->cell[i]);
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free(clist->cell);
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free(clist);
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return TS_SUCCESS;
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}
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//TODO: not debugged at all!
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inline ts_uint vertex_self_avoidance(ts_vesicle *vesicle, ts_vertex *vtx){
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ts_uint cellidx;
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ts_uint ncx, ncy,ncz;
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ts_cell_list *clist=vesicle->clist;
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ncx=(ts_uint)((vtx->x-vesicle->cm[0])*clist->dcell+clist->shift);
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ncy=(ts_uint)((vtx->y-vesicle->cm[1])*clist->dcell+clist->shift);
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ncz=(ts_uint)((vtx->z-vesicle->cm[2])*clist->dcell+clist->shift);
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if(ncx == clist->ncmax[0]-1 || ncx == 2){
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fatal("Vesicle is positioned outside the cell covered area. Coordinate x is the problem.",1500);
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}
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if(ncy == clist->ncmax[1]-1 || ncy == 2){
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fatal("Vesicle is positioned outside the cell covered area. Coordinate y is the problem.",1500);
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}
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if(ncz == clist->ncmax[2]-1 || ncz == 2){
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fatal("Vesicle is positioned outside the cell covered area. Coordinate z is the problem.",1500);
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}
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cellidx=ncz+(ncy-1)*clist->ncmax[2] + (ncx-1)*clist->ncmax[2]*
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clist->ncmax[1] - 1; // -1 is because of 0 based indexing
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return cellidx;
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}
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//TODO: looks ok, but debug anyway in the future
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ts_bool cell_add_vertex(ts_cell *cell, ts_vertex *vtx){
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cell->nvertex++;
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cell->vertex=(ts_vertex **)realloc(cell->vertex,cell->nvertex*sizeof(ts_vertex *));
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if(cell->vertex == NULL){
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fatal("Reallocation of memory failed during insertion of vertex in cell_add_vertex",3);
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}
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cell->vertex[cell->nvertex-1]=vtx;
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return TS_SUCCESS;
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}
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ts_bool cell_list_cell_occupation_clear(ts_cell_list *clist){
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ts_uint i;
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for(i=0;i<clist->cellno;i++){
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if(clist->cell[i]->vertex != NULL){
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free(clist->cell[i]->vertex);
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clist->cell[i]->vertex=NULL;
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}
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clist->cell[i]->nvertex=0;
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}
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return TS_SUCCESS;
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}
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// TODO: compiles ok, but it is completely untested and undebugged. It was debugged before rewrite, but this was long time ago.
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ts_bool cell_occupation_number_and_internal_proximity(ts_cell_list *clist, ts_uint cellidx, ts_vertex *vtx, ts_vertex *tvtx){
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ts_uint ncx,ncy,ncz,remainder,cell_occupation;
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ts_uint i,j,k,l,neigh_cidx;
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ts_double dist;
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ncx=(cellidx+1)/(clist->ncmax[2]*clist->ncmax[1])+1; //+1 because of zero indexing.
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remainder=(cellidx+1)%(clist->ncmax[2]*clist->ncmax[1]);
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ncy=remainder/clist->ncmax[2]+1;
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ncz=remainder%clist->ncmax[2];
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// fprintf(stderr,"here are ncx,ncy,ncz=%i,%i,%i\n",ncx,ncy,ncz);
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for(i=ncx-1;i<=ncx+1;i++){
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for(j=ncy-1;j<=ncy+1;j++){
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for(k=ncz-1;k<=ncz+1;k++){
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neigh_cidx=k+(j-1)*clist->ncmax[2]+(i-1)*clist->ncmax[2]*clist->ncmax[1] -1;
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// fprintf(stderr,"neigh_cell_index=%i\n",neigh_cidx);
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cell_occupation=clist->cell[neigh_cidx]->nvertex;
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// fprintf(stderr, "cell_occupation=%i\n",cell_occupation);
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if(cell_occupation>clist->max_occupancy){
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fatal("Neighbouring cell occupation more than set max_occupancy value.",2000);
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}
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// Now we check whether we didn't come close to some other vertices in the same
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// cell!
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if(cell_occupation>1){
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for(l=0;l<cell_occupation;l++){
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if(clist->cell[neigh_cidx]->vertex[l]!=vtx){
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// fprintf(stderr,"calling dist on vertex %i\n",l);
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dist=vtx_distance_sq(clist->cell[neigh_cidx]->vertex[l],tvtx);
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// fprintf(stderr,"dist was %f\n",dist);
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if(dist<1) return TS_FAIL;
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}
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}
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}
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}
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}
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}
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return TS_SUCCESS;
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}
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