f1->edges = NULL;
f1->order = 3;
f1->dots = snewn(f1->order, grid_dot*);
+ f1->has_incentre = FALSE;
f2->edges = NULL;
f2->order = 3;
f2->dots = snewn(f2->order, grid_dot*);
+ f2->has_incentre = FALSE;
/* face descriptions depend on whether the row-number is
* odd or even */