This commit is a proof of concept. Compared to Python native threads,
QThread is safer in Gui mo...

Move it into ImageView

For console mode purpose, an 'add_view' method dedicated to single
objects may be more handy.

In console mode, no view provider is created, we must handle this case
in object (project, view ...

This reverts commit 09eaa65a8e0378f9632a7eb3dae066985d4bf9e3.
The above commit is unstable at ru...

Get rid of 'multiprocessing'

This commit adds the capability to run the renderer in an asynchronous
manner, whatever renderer...

...out of renderers' plugins

This reverts commit 9ed56539386d3b01f2468e0941ef1b1b93742898.

The previous commit will not work...

'Popen(...)' is not equivalent to 'with Popen()': first syntax is
non-blocking, whereas second o...

(for Windows)

Modelled on Cycles carpaint

Proof of concept, many to do's remaining

This reverts commit 30617707187970ab084e9a703d1e9457de924781.

In preparation for using precompiled OSL shader files

In order to manage single word tags

Otherwise we may have an immutable object and further treatments
(rescaling...) will fail.

As scenes are now exported in meters, area lights magic coefficients
have to be updated.

The internal unit of distance in FreeCAD is the millimeter. However, the
standard unit for rende...