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Solution for creating the most efficient nesting of a set of boxes.

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BoxNesting

Given a set of boxes where each box has a height, length and depth between 0.5m and 1m this programs finds the most efficient way to stack them together so space consumption is optimized.

Usage

usage: BoxNesting [options]
  basic user options:
    -h --help     show this message
    -v --version  show version

when no options are specified program waits for input of boxes on stdin in the following format:

<n>
<length of first side of first box> <length of second side of first box> <length of third side of first box>
<length of first side of second box> <length of second side of second box> <length of third side of second box>
...
<length of first side of nth box> <length of second side of nth box> <length of third side of nth box>

where n is positive integer and the lengths are decimal numbers between 0.5 and 1

Example:
4
0.9 0.9 0.9
0.8 0.8 0.8
0.7 0.7 0.7
0.6 0.6 0.6

once specifications are given program will calculate the most efficient way to stack those boxes and write the amount of visible boxes to stdout as a single number

Compilation

CMake is the build system generator. There are several configuration and targets that can be configured via cmake. You pay for what you use so any listed dependencies on a target will only be required if you actually enable it. Below each separate configuration is explained. You can any of the ways by adding multiple cmake flags.

Code

To build the code gcc-7.3.0 is required however it should work with any compiler that has C++17 support. Only tested on ubuntu but it should work on windows as well.

By default this target is generated by cmake with having to explicitly enable it. So to just build the code cmake has to be ran and then make.

Example usage:

> mkdir build && cd build
> cmake ../
> make

Now the executable will be available in build/src/BoxNesting

Test

The project uses the catch2 testing framework. The build is tested with version 2.4.2 but it should work with any version >= 2.0.0

To enable testing the -DTEST:BOOL=ON has to be passed to cmake. Subsequentally the test target is available on the resulting make file and the test executable will be build when building the code. Running make test will run all test cases and print the results.

Example usage:

> mkdir build && cd build
> cmake ../ -DTEST:BOOL=ON
> make
> make test

Clang-format

Formatting is done by clang-format, tested with version 6.0.0. The build system includes a handy way to call it without having to configure it yourself. When -DFORMAT:BOOL=ON is passed to Cmake two additional targets will be available on the resulting make file. format and format_check, format will format the project in place and format_check will just check the formatting and show problems in the console.

Example usage:

> mkdir build && cd build
> cmake ../ -DTEST:FORMAT=ON
> make format_check
> make format

Clang-tidy

Clang-tidy is used to ensure a higher code quality and to avoid common code smells, tested with version 6.0.0. There is no specific clang-tidy target since when it is enabled the code will be checked during normal compilation.

Example usage:

> mkdir build && cd build
> cmake ../ -DCLANG_TIDY:BOOL=ON
> make

Flawfinder

Flawfinder is a static checked which is also used to ensure a higher code quality, tested with version 2.0.7. There is a specific target for this checked since it's not ran while building the code.

Example usage:

> mkdir build && cd build
> cmake ../ -DFLAWFINDER=ON
> make flawfinder

Sanitizer

When using gcc there is support for running the undefined behaviour sanitizer(ubsan) and the adress sanitizer(asan) which can detect certain issues with the program at runtime. To enable the sanitizers to be included in the code the -DSANITISE:BOOL=ON flag can be passed to cmake. Then the resulting executables(code and test) will be instrumented with the sanitizers. Please note that enabling these sanitizers can NOT be enabled at the same time as code coverage instrumentation since they are not compatible with eachother.

Example usage:

> mkdir build && cd build
> cmake ../ -DSANITISE:BOOL=ON
> make

Code coverage

When using gcc there is support for instrumenting the code with coverage counters and generating a html report(dependency on gcov >= 7.3 and lcov >= 1.13 other version might work or they might not). This will allow you to get insight on what lines are hit in your code and how many times. Note that these flags cannot be enabled at the same time as the Sanitizer flags since they are incompatible. To enable the code coverage counters the -DSANITISE:BOOL=ON flag can be passed to cmake. Now when running the program or the tests coverage counter files will be generated. These can be converted to a html page by running make coverage_report. Since multiple runs of the code can poison the counters to no longer make much sense another target is available make coverage_reset which will reset the counters.

Example usage:

> mkdir build && cd build
> cmake ../ -DCOVERAGE:BOOL=ON -DTEST:BOOL=ON
> make
> make test
> make coverage_report
> make coverage_reset

Doxygen

Doxygen documentation html pages can be build by passing -DDOXYGEN:BOOL=ON to cmake and then building it with make doxygen. This has a dependency on doxygen >= 1.8.13 and graphviz >= 2.40. Other version might work but they might not.

> mkdir build && cd build
> cmake ../ -DDOXYGEN:BOOL=ON
> make doxygen

Warnings as errors

By default any target will not fail if it somehow emits warnings. If -DWERROR:BOOL=ON is passed to cmake any warnings will turn into errors and building will be stopped when any error is encountered.

Example usage:

> mkdir build && cd build
> cmake ../ -DWERROR:BOOL=ON
> make

Release and debug builds

By default a release build is made. To make an unoptimized debug build pass -DCMAKE_BUILD_TYPE:STRING=Debug to cmake.

Example usage:

> mkdir build && cd build
> cmake ../ -DCMAKE_BUILD_TYPE:STRING=Debug
> make

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