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from microbit import display, Image
def eq(i, j):
w = i.width()
h = i.height()
if w != j.width():
return False
if h != j.height():
return False
for x in range(w):
for y in range(h):
if i.get_pixel(x,y) != j.get_pixel(x,y):
return False
return True
TEST = Image("44444:45554:45654:45554:44444")
def test_blit():
assert eq(TEST, TEST)
i = Image(4, 4)
i.blit(TEST, 1, 1, 5, 5)
assert eq(i, Image("5554:5654:5554:4444"))
i.fill(2)
i.blit(TEST, -2, -2, 3, 3)
assert eq(i, Image('0002:0002:0042:2222'))
i.fill(2)
i.blit(TEST, 2, 2, 3, 3)
assert eq(i, Image('6542:5542:4442:2222'))
i.fill(2)
i.blit(TEST, 0, 0, 5, 5, -3, -3)
assert eq(i, Image('5422:4422:2222:2222'))
i.fill(2)
i.blit(TEST, 2, 2, 2, 2, 1, 1)
assert eq(i, Image('2222:2652:2552:2222'))
i = TEST.copy()
i.blit(i, 2, 2, 3, 3)
assert eq(i, Image('65444:55454:44454:45554:44444'))
i = TEST.copy()
i.blit(i, -2, -2, 5, 5)
assert eq(i, Image('00000:00000:00444:00455:00456'))
i = TEST.copy()
i.blit(i, 0, 0, 3, 3, 2, 2)
assert eq(i, Image('44444:45554:45444:45455:44456'))
i = Image(2, 7)
i.fill(2)
i.blit(TEST, -100, -100, 50, 50, 1, 1)
assert eq(i, Image('22:20:20:20:20:20:20'))
def test_crop():
assert eq(TEST.crop(-1, -1, 2, 2), Image('00:04'))
assert eq(TEST.crop(1, 1, 2, 2), Image('55:56'))
assert eq(TEST.crop(4, 4, 3, 3), Image('400:000:000'))
def test_shift():
assert eq(TEST, TEST.shift_left(0))
assert eq(TEST, TEST.shift_up(0))
for n in range(-6, 7):
assert eq(TEST.shift_left(n), TEST.shift_right(-n))
assert eq(TEST.shift_up(n), TEST.shift_down(-n))
assert eq(TEST.shift_left(1), Image('44440:55540:56540:55540:44440'))
assert eq(TEST.shift_down(1), Image('00000:44444:45554:45654:45554'))
try:
display.scroll("blit")
test_blit()
display.scroll("crop")
test_crop()
display.scroll("shift")
test_shift()
print("Image test: PASS")
display.show(Image.HAPPY)
except Exception as ae:
display.show(Image.SAD)
raise
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