26     canvas->restore();  in test_reverse_concave()
34     canvas->restore();  in test_bowtie()
43     canvas->restore();  in test_fake_bowtie()
53     canvas->restore();  in test_intruding_vertex()
66     canvas->restore();  in test_inversion_repeat_vertex()
75     canvas->restore();  in test_fish()
87     canvas->restore();  in test_fast_forward()
98     canvas->restore();  in test_hole()
107     canvas->restore();  in test_star()
122     canvas->restore();  in test_twist()
131     canvas->restore();  in test_stairstep()
138     canvas->restore();  in test_stairstep2()
146     canvas->restore();  in test_overlapping()
159     canvas->restore();  in test_partners()
177     canvas->restore();  in test_winding_merged_to_zero()
189     canvas->restore();  in test_monotone_1()
201     canvas->restore();  in test_monotone_2()
213     canvas->restore();  in test_monotone_3()
228     canvas->restore();  in test_monotone_4()
241     canvas->restore();  in test_monotone_5()
255     canvas->restore();  in test_degenerate()
272     canvas->restore();  in test_coincident_edge()
288     canvas->restore();  in test_bowtie_coincident_triangle()
304     canvas->restore();  in test_collinear_outer_boundary_edge()
319     canvas->restore();  in test_coincident_edges_1()
333     canvas->restore();  in test_coincident_edges_2()
347     canvas->restore();  in test_coincident_edges_3()
361     canvas->restore();  in test_coincident_edges_4()