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_poly(output_dir):
"""
test drawing polygons to the foreground
"""
mc = MapCanvas((400, 300), preset_colors='web')
mc.background_color = 'transparent'
mc.clear_background()
mc.draw_polygon(((-30, 30), (30, 30), (30, -20), (-30, -20)),
fill_color='white',
line_color='black',
background=False)
mc.save_foreground(os.path.join(output_dir, "foreground.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_poly(output_dir):
"""
test drawing polygons to the foreground
"""
mc = MapCanvas((400, 300), preset_colors='web')
mc.background_color = 'transparent'
mc.clear_background()
mc.draw_polygon(((-30, 30),
(30, 30),
(30, -20),
(-30, -20)),
fill_color='white',
line_color='black',
background=False)
mc.save_foreground(os.path.join(output_dir, "foreground.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"))
def test_projection(output_dir):
"""
draw the "same sized" rectangle at three latitudes to see how the look
"""
mc = MapCanvas((400, 400), preset_colors='web')
mc.viewport = ((-20, 25), (20, 65))
mc.draw_polygon(((-15, 60), (15, 60), (15, 30), (-15, 30)),
fill_color='maroon',
line_color='black')
mc.save_foreground(os.path.join(output_dir, "image_projection_north.png"))
mc.viewport = ((-20, -20), (20, 20))
mc.draw_polygon(((-15, 15), (15, 15), (15, -15), (-15, -15)),
fill_color='maroon',
line_color='black')
mc.save_foreground(os.path.join(output_dir,
"image_projection_equator.png"))
mc.viewport = ((-20, -45), (20, -90))
mc.draw_polygon(((-15, -80), (15, -80), (15, -50), (-15, -50)),
fill_color='maroon',
line_color='black')
mc.save_foreground(os.path.join(output_dir, "image_projection_south.png"))
def test_projection(output_dir):
"""
draw the "same sized" rectangle at three latitudes to see how the look
"""
mc = MapCanvas((400, 400), preset_colors='web')
mc.viewport = ((-20, 25), (20, 65))
mc.draw_polygon(((-15, 60),
(15, 60),
(15, 30),
(-15, 30)),
fill_color='maroon',
line_color='black')
mc.save_foreground(os.path.join(output_dir, "image_projection_north.png"))
mc.viewport = ((-20, -20), (20, 20))
mc.draw_polygon(((-15, 15),
(15, 15),
(15, -15),
(-15, -15)
),
fill_color='maroon',
line_color='black')
mc.save_foreground(os.path.join(output_dir,
"image_projection_equator.png"))
mc.viewport = ((-20, -45), (20, -90))
mc.draw_polygon(((-15, -80),
(15, -80),
(15, -50),
(-15, -50)),
fill_color='maroon',
line_color='black')
mc.save_foreground(os.path.join(output_dir, "image_projection_south.png"))
