76 static void pointslope(privpath_t *pp, int i, int j, dpoint_t *ctr, dpoint_t *dir) {  in pointslope()  argument
127       dir->x = -b/l;  in pointslope()
128       dir->y = a/l;  in pointslope()
133       dir->x = -c/l;  in pointslope()
134       dir->y = b/l;  in pointslope()
138     dir->x = dir->y = 0;   /* sometimes this can happen when k=4:  in pointslope()
329   int ct[4], dir;  in calc_lon()  local
365     dir = (3+3*(pt[mod(i+1,n)].x-pt[i].x)+(pt[mod(i+1,n)].y-pt[i].y))/2;  in calc_lon()
366     ct[dir]++;  in calc_lon()
378       dir = (3+3*sign(pt[k].x-pt[k1].x)+sign(pt[k].y-pt[k1].y))/2;  in calc_lon()
379       ct[dir]++;  in calc_lon()
654   dpoint_t *dir = NULL;      /* dir[m] */  in adjust_vertices()  local
663   SAFE_CALLOC(dir, m, dpoint_t);  in adjust_vertices()
676     pointslope(pp, po[i], j, &ctr[i], &dir[i]);  in adjust_vertices()
683     d = sq(dir[i].x) + sq(dir[i].y);  in adjust_vertices()
691       v[0] = dir[i].y;  in adjust_vertices()
692       v[1] = -dir[i].x;  in adjust_vertices()
830   free(dir);  in adjust_vertices()
836   free(dir);  in adjust_vertices()