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3D Bin Packing implementation based on this paper. The code is based on gedex implementation in Go.
[bigger_first=False/True]
By default all the bins and items are sorted from the smallest to the biggest, also it can be vice versa, to make the packing in such ordering.[distribute_items=True]
From a list of bins and items, put the items in the bins that at least one item be in one bin that can be fitted. That is, distribute all the items in all the bins so that they can be contained.[distribute_items=False]
From a list of bins and items, try to put all the items in each bin and in the end it show per bin all the items that was fitted and the items that was not.[number_of_decimals=X]
Define the limits of decimals of the inputs and the outputs. By default is 3.pip install py3dbp
Bin and Items have the same creation params:
my_bin = Bin(name, width, height, depth, max_weight)
my_item = Item(name, width, height, depth, weight)
Packer have three main functions:
packer = Packer() # PACKER DEFINITION
packer.add_bin(my_bin) # ADDING BINS TO PACKER
packer.add_item(my_item) # ADDING ITEMS TO PACKER
packer.pack() # PACKING - by default (bigger_first=False, distribute_items=False, number_of_decimals=3)
After packing:
packer.bins # GET ALL BINS OF PACKER
my_bin.items # GET ALL FITTED ITEMS IN EACH BIN
my_bin.unfitted_items # GET ALL UNFITTED ITEMS IN EACH BIN
from py3dbp import Packer, Bin, Item
packer = Packer()
packer.add_bin(Bin('small-envelope', 11.5, 6.125, 0.25, 10))
packer.add_bin(Bin('large-envelope', 15.0, 12.0, 0.75, 15))
packer.add_bin(Bin('small-box', 8.625, 5.375, 1.625, 70.0))
packer.add_bin(Bin('medium-box', 11.0, 8.5, 5.5, 70.0))
packer.add_bin(Bin('medium-2-box', 13.625, 11.875, 3.375, 70.0))
packer.add_bin(Bin('large-box', 12.0, 12.0, 5.5, 70.0))
packer.add_bin(Bin('large-2-box', 23.6875, 11.75, 3.0, 70.0))
packer.add_item(Item('50g [powder 1]', 3.9370, 1.9685, 1.9685, 1))
packer.add_item(Item('50g [powder 2]', 3.9370, 1.9685, 1.9685, 2))
packer.add_item(Item('50g [powder 3]', 3.9370, 1.9685, 1.9685, 3))
packer.add_item(Item('250g [powder 4]', 7.8740, 3.9370, 1.9685, 4))
packer.add_item(Item('250g [powder 5]', 7.8740, 3.9370, 1.9685, 5))
packer.add_item(Item('250g [powder 6]', 7.8740, 3.9370, 1.9685, 6))
packer.add_item(Item('250g [powder 7]', 7.8740, 3.9370, 1.9685, 7))
packer.add_item(Item('250g [powder 8]', 7.8740, 3.9370, 1.9685, 8))
packer.add_item(Item('250g [powder 9]', 7.8740, 3.9370, 1.9685, 9))
packer.pack()
for b in packer.bins:
print(":::::::::::", b.string())
print("FITTED ITEMS:")
for item in b.items:
print("====> ", item.string())
print("UNFITTED ITEMS:")
for item in b.unfitted_items:
print("====> ", item.string())
print("***************************************************")
print("***************************************************")
FAQs
3D Bin Packing
We found that py3dbp demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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