34     canvas->restore();  in test_reverse_concave()
47     canvas->restore();  in test_bowtie()
62     canvas->restore();  in test_fake_bowtie()
79     canvas->restore();  in test_intruding_vertex()
96     canvas->restore();  in test_inversion_repeat_vertex()
111     canvas->restore();  in test_fish()
127     canvas->restore();  in test_fast_forward()
138     canvas->restore();  in test_hole()
147     canvas->restore();  in test_star()
161     canvas->restore();  in test_twist()
176     canvas->restore();  in test_stairstep()
189     canvas->restore();  in test_stairstep2()
202     canvas->restore();  in test_overlapping()
222     canvas->restore();  in test_partners()
240     canvas->restore();  in test_winding_merged_to_zero()
254     canvas->restore();  in test_monotone_1()
267     canvas->restore();  in test_monotone_2()
280     canvas->restore();  in test_monotone_3()
295     canvas->restore();  in test_monotone_4()
308     canvas->restore();  in test_monotone_5()
322     canvas->restore();  in test_degenerate()
339     canvas->restore();  in test_coincident_edge()
355     canvas->restore();  in test_bowtie_coincident_triangle()
371     canvas->restore();  in test_collinear_outer_boundary_edge()
386     canvas->restore();  in test_coincident_edges_1()
400     canvas->restore();  in test_coincident_edges_2()
414     canvas->restore();  in test_coincident_edges_3()
428     canvas->restore();  in test_coincident_edges_4()