[Qgis-developer] Processing C++ algorithms

[Nyall Dawson]

On 14 Sep 2016 7:20 PM, "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.

So it would sit between core and gui (ie no widgets)?

I'd lean this way, but am wondering why not just put the code in core? What
specific algorithms do you have in mind?

Nyall

>
>  * Port some processing core classes to C++, mainly GeoAlgorithm,
>    outputs and parameters (and possibly some dependencies).
>
>  * Ship it as a separate module and do it all the grass/saga etc. way.
>
> 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
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