def test_copy_back_to_fore(output_dir):
mc = MapCanvas((400, 300), preset_colors='web')
mc.background_color = 'white'
mc.clear_background()
mc.clear_foreground()
mc.draw_polyline(((-30, 30),
(30, 30),
(30, -20),
(-30, -20)),
line_color='red',
line_width=5,
background=True)
mc.copy_back_to_fore()
mc.draw_polyline(((-20, 20),
(20, 20),
(20, -10),
(-20, -10)),
line_color='blue',
line_width=5,
background=False)
mc.save_foreground(os.path.join(output_dir, "copy_back_to_fore.png"))
def test_foreground_polyline(output_dir):
"""
test drawing polygons to the background
"""
mc = MapCanvas((400, 300), preset_colors='web')
mc.background_color = 'transparent'
mc.clear_background()
mc.draw_polyline(((-30, 30), (30, 30), (30, -20), (-30, -20)),
line_color='red',
line_width=5,
background=False)
mc.save_foreground(os.path.join(output_dir, "foreground_polyline.png"))
def test_foreground_polyline(output_dir):
"""
test drawing polygons to the background
"""
mc = MapCanvas((400, 300), preset_colors='web')
mc.background_color = 'transparent'
mc.clear_background()
mc.draw_polyline(((-30, 30),
(30, 30),
(30, -20),
(-30, -20)),
line_color='red',
line_width=5,
background=False)
mc.save_foreground(os.path.join(output_dir, "foreground_polyline.png"))
def test_copy_back_to_fore(output_dir):
mc = MapCanvas((400, 300), preset_colors='web')
mc.background_color = 'white'
mc.clear_background()
mc.clear_foreground()
mc.draw_polyline(((-30, 30), (30, 30), (30, -20), (-30, -20)),
line_color='red',
line_width=5,
background=True)
mc.copy_back_to_fore()
mc.draw_polyline(((-20, 20), (20, 20), (20, -10), (-20, -10)),
line_color='blue',
line_width=5,
background=False)
mc.save_foreground(os.path.join(output_dir, "copy_back_to_fore.png"))