30     canvas->save();  in test_reverse_concave()
43     canvas->save();  in test_bowtie()
56     canvas->save();  in test_fake_bowtie()
71     canvas->save();  in test_fish()
86     canvas->save();  in test_collinear_edges()
99     canvas->save();  in test_hole()
116     canvas->save();  in test_star()
131     canvas->save();  in test_stairstep()
145     canvas->save();  in test_stairstep2()
159     canvas->save();  in test_overlapping()
172     canvas->save();  in test_monotone_1()
186     canvas->save();  in test_monotone_2()
199     canvas->save();  in test_monotone_3()
212     canvas->save();  in test_monotone_4()
227     canvas->save();  in test_monotone_5()
239     canvas->save();  in test_degenerate()
253     canvas->save();  in test_coincident_edge()
271     canvas->save();  in test_bowtie_coincident_triangle()
287     canvas->save();  in test_coincident_edges_1()
301     canvas->save();  in test_coincident_edges_2()
315     canvas->save();  in test_coincident_edges_3()
329     canvas->save();  in test_coincident_edges_4()