[Qgis-developer] Processing C++ algorithms

[Luigi Pirelli]

On 14 September 2016 at 11:20, Matthias Kuhn <matthias at opengis.ch> wrote:
> Hi,
>
> If one wants to create a C++ processing algorithm, is there any
> preferred way to ship it? I don't think we are doing that yet apart from
> calling 3rd party tools.
>
> The possible approaches I can see are
>
>  * Add a new QGIS module "algs" next to gui/core etc and use
>    it's python bindings to call the code from a small python wrapper.

overhead?

>
>  * Port some processing core classes to C++, mainly GeoAlgorithm,
>    outputs and parameters (and possibly some dependencies).

I would be against this... I would leave Processing as pure python
core plugin allowing it more dynamic respect qgis release

>  * Ship it as a separate module and do it all the grass/saga etc. way.

IMHO the best solution... what is your use case to justify a different workflow?

> Context is, I will probably need this on QField with no python. I could
> do it without processing there but since the trend is to processize
> whatever possible, I thought it would be a good opportunity to bring
> this subject to the table.
>
> Matthias

cheers