def test_empty_packer():
packer = bp.Packer()
assert packer.get_capacity() == 0.0
assert packer.get_total_volume() == 0.0
assert packer.get_total_weight() == 0.0
assert packer.get_fill_ratio() == 0.0
assert len(packer.unfitted_items) == 0
def test_single_bin_single_item():
packer = bp.Packer()
box = packer.add_bin("B0", 1, 1, 1)
packer.add_item("I0", 1, 1, 1, 1)
packer.pack()
assert len(box.items) == 1
assert len(packer.unfitted_items) == 0
def test_single_bin_multiple_items(w, h, d):
packer = bp.Packer()
box = packer.add_bin("B0", w, h, d)
for index in range(max(w, h, d)):
packer.add_item(f"I{index}", 1, 1, 1, 1)
packer.pack()
assert len(box.items) == 3
assert len(packer.unfitted_items) == 0
def test_single_bin_different_sized_items():
packer = bp.Packer()
box = packer.add_bin("B0", 3, 3, 1)
packer.add_item("I0", 1, 1, 1, 1)
packer.add_item("I1", 2, 1, 1, 1)
packer.add_item("I2", 3, 1, 1, 1)
packer.pack()
assert len(box.items) == 3
assert len(packer.unfitted_items) == 0
def build_packer():
packer = bp.Packer()
packer.add_item("50g [powder 1]", 3.9370, 1.9685, 1.9685, 1)
packer.add_item("50g [powder 2]", 3.9370, 1.9685, 1.9685, 2)
packer.add_item("50g [powder 3]", 3.9370, 1.9685, 1.9685, 3)
packer.add_item("250g [powder 4]", 7.8740, 3.9370, 1.9685, 4)
packer.add_item("250g [powder 5]", 7.8740, 3.9370, 1.9685, 5)
packer.add_item("250g [powder 6]", 7.8740, 3.9370, 1.9685, 6)
packer.add_item("250g [powder 7]", 7.8740, 3.9370, 1.9685, 7)
packer.add_item("250g [powder 8]", 7.8740, 3.9370, 1.9685, 8)
packer.add_item("250g [powder 9]", 7.8740, 3.9370, 1.9685, 9)
return packer
def make_3d_packer(items) -> bp.Packer:
packer = bp.Packer()
for index, (w, h, d) in enumerate(items):
packer.add_item(str(index), w, h, d)
return packer