How does DefaultStackValueConstraint.maxSupportedWeight work?

[woodward54]

I would expect this test to fail because maxSupportedWeight=1 and the box weight=6, but it succeeds (see screenshot).

The packer is placing boxes with a higher weight (6) on top of boxes with a maxSupportedWeight constraint of 1. Am I using this wrong? Some more documentation on this feature would be very helpful.

@Test
	public void runAlgo() throws Exception
	{
		List<ContainerItem> containers = ContainerItem
				.newListBuilder()
				.withContainer(Container.newBuilder().withDescription("1").withEmptyWeight(1).withSize(2, 2, 5).withMaxLoadWeight(10000).build(), 1)
				.build();

		// FastBruteForcePackager packager = FastBruteForcePackager.newBuilder().build();
		FastLargestAreaFitFirstPackager packager = FastLargestAreaFitFirstPackager.newBuilder().build();
		// LargestAreaFitFirstPackager packager = LargestAreaFitFirstPackager.newBuilder().build();

		List<StackableItem> products = new ArrayList<>();

		StackConstraint c = new DefaultStackValueConstraint(1);

		products.add(new StackableItem(Box.newBuilder().withConstraint(c).withDescription("A").withSize(1, 1, 1).withWeight(5).withRotate2D().build(), 5));

		//.withDeadline(ms) not working? causes failure no matter what value I use
		PackagerResult build = packager.newResultBuilder().withContainers(containers).withMaxContainerCount(1).withStackables(products).build();

		if(build.isSuccess()) {
			System.out.println("Success!");
			write(build.getContainers());
		} else {
			System.out.println("Failed");
		}
	}

[skjolber]

Hi, there is currently no proper logic for stackable support weight, but I am considering adding a few types of constraints.

• weight-based
  • max weight
  • max pressure
• x number of boxes
  • same type of box
  • box of a certain category or classification

Do you have any additional requirements?

[woodward54]

I see. Yes support for stack weight-based and x number of boxes of the same type would be very helpful. I appreciate all the work you've done on this.

if doable adding a priority system for the insert order would be amazing. i.e. Case A needs to be loaded first, then Case B. But thats a nice to have

[skjolber]

So that priority system should be reasonably simple to make.

Note to self: This will require throwing out some "inner" points.