Adds helper functions to create AxisAlignedBox from shapes Origin shapes: Box, Sphere, Capsure, Cylinder

🎉 New feature

Closes #666

Summary

Implementation of static helper functions in gz::math::AxisAlignedBoxHelpers to convert shape objects (Box, Sphere, Capsule, Cylinder) into AxisAlignedBox objects.

I have tried to write the functions in more or less the same format as other files. Since, the functions are template functions, I have kept their implementation in gz/math/detail/AxisAlignedBoxHelpers.hh and the declarations in gz/math/AxisAlignedBoxHelpers.hh.

I have also written comments in the same style as other files.

Also, I have added a few tests to check their correctness.

Test it

Testing can be done by creating a new shape:

math::Box<double> box(2.0, 4.0, 6.0);

Then, using the helper function:

math::AxisAlignedBox aabb = math::AxisAlignedBoxHelpers<double>::ConvertToAxisAlignedBox(box);

Then, can call functions like:

aabb.Min()

The output would be: Vector3d(-1.0, -2.0, -3.0)

Checklist

• Signed all commits for DCO
• Added tests
• Added example and/or tutorial
• Updated documentation (as needed)
• Updated migration guide (as needed)
• Consider updating Python bindings (if the library has them)
• codecheck passed (See contributing)
• All tests passed (See test coverage)

Doubts

1. I am not sure if we need an example / tutorial for these helper functions. Kindly let me know if we do, I will add them.

2. Also, kindly let me know if the python bindings have to be updated and where do I update the documentation.