Fixed centermass functon to move the vertices so cm is always 0

Samo Penic

2012-07-09 919555150e5676cae7f7c471e4bdf30d563bcb12

 src/frame.c

@@ -9,13 +9,20 @@
    vesicle->cm[1]=0;
    vesicle->cm[2]=0;
    for(i=0;i<n;i++){
        vesicle->cm[0]+=vtx[i]->data->x;
        vesicle->cm[1]+=vtx[i]->data->y;
        vesicle->cm[2]+=vtx[i]->data->z; 
        vesicle->cm[0]+=vtx[i]->x;
        vesicle->cm[1]+=vtx[i]->y;
        vesicle->cm[2]+=vtx[i]->z; 
    } 
    vesicle->cm[0]/=(ts_float)n;
    vesicle->cm[1]/=(ts_float)n;
    vesicle->cm[2]/=(ts_float)n;

    for(i=0;i<n;i++){
        vtx[i]->x-=vesicle->cm[0];
        vtx[i]->y-=vesicle->cm[1];
        vtx[i]->z-=vesicle->cm[2]; 
    } 

    return TS_SUCCESS;
}

@@ -30,7 +37,7 @@
    cell_list_cell_occupation_clear(vesicle->clist);
    for(i=0;i<n;i++){
    cellidx=vertex_self_avoidance(vesicle, vesicle->vlist->vtx[i]);
    vesicle->vlist->vtx[i]->data->cell=vesicle->clist->cell[cellidx];
    vesicle->vlist->vtx[i]->cell=vesicle->clist->cell[cellidx];

    cell_add_vertex(vesicle->clist->cell[cellidx],vesicle->vlist->vtx[i]);