Python: arguments of type R3 (or C3?) to be initialized from Python list

for instance, we would like to call setPolFilters(polarizer_dir, ...) as setPolFilters([0,0,1], ...)

[Redmine2494]

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assigned to @a.nejati

mentioned in merge request !2766 (merged)

mentioned in commit 36eab7d8

mentioned in commit 64d51a10

mentioned in merge request !2795 (merged)

mentioned in commit dabca0af

unassigned @a.nejati

This issue can be resolved partially by using the SWIG typemap technique; e.g. see commit fd25501a. The SWIG typemap maps a Python sequence to a C++ R3 or C3 instance.

However, this method works only for functions or methods which are not overloaded. Overloaded functions or methods must be explicitly 'extended' in SWIG to accept a Python sequence instead of an R3/C3 instance. See https://www.swig.org/Doc1.3/Typemaps.html#Typemaps_overloading.

Many of the constructors which accept an R3 or C3 instance are overloaded, and therefore, must be explicitly extended in the SWIG part.

For a first attempt, see MR !2766 (merged).