Similar typedefs for parametric shape

[akrah]

PR Description

This PR:

• homogenizes typdefs of parametric shapes that could be Points/Points2D and Vector/Vector2D
• modify constructors/destructors by using delete/default directives
• adds copy constructors that were strangely forbidden

This PR also:

• fixes computation of bounding boxes for some shapes
• removes some useless temporary variables
• improves comparisons to 0 by using isAlmostEqual method
• adds const directives to several method parameters

Checklist

• Unit-test of your feature with Catch.
• Doxygen documentation of the code completed (classes, methods, types, members...)
• Documentation module page added or updated.
• New entry in the ChangeLog.md added.
• No warning raised in Debug cmake mode (otherwise, Travis C.I. will fail).
• All continuous integration tests pass (Travis & appveyor)

[akrah]

Yes, I prepare an IPOL demo that evaluate discrete estimators on all digitizations of an object, up to a translation. Of course, this demo is based on DGtal ;), and mainly uses shapes and estimators.

[copyme]

@akrah cool! I thought that these are mainly used for examples and demos, though. So, I was a bit surprised to see PR regarding them :-)

[akrah]

@copyme I suppose it was probably the case because PRs I make are mostly about difficulties to homogenize shapes and estimators concepts in order to use generalization in code using them.

[copyme]

@akrah I agree. During my masters Yukiko asked us to write some experiments in DGtal concerning estimators.
I wanted to have a very automatic and generic code and ended up with many adapters, etc. I remember having one big file with a description of an experiment, shapes, 2D/3D, estimator, etc. The program just read it and provided outputs with figures and values.

Unifying this is a marvelous idea, at least from a student stand point :D

[dcoeurjo]

Thx @akrah , could tou please add a Changelog entry ?

[akrah]

Done @dcoeurjo!

[dcoeurjo]

thanks @akrah for the cleanup !
all good for me