This introduces much faster CenterOfMassProvider#supports method that
can be used as cheap pre-check to see if the object supplied could have
the center of mass and so delay the domputation to a moment where it is
actually needed.
"Professional CMake" book suggest the following:
"Targets should build successfully with or without compiler support for precompiled headers. It
should be considered an optimization, not a requirement. In particular, do not explicitly include a
precompile header (e.g. stdafx.h) in the source code, let CMake force-include an automatically
generated precompile header on the compiler command line instead. This is more portable across
the major compilers and is likely to be easier to maintain. It will also avoid warnings being
generated from certain code checking tools like iwyu (include what you use)."
Therefore, removed the "#include <PreCompiled.h>" from sources, also
there is no need for the "#ifdef _PreComp_" anymore
When performing undo/redo after tansforming an object it flips back
to its original position but the dragger does not.
This commit set the dragger's placement to the object placement.
Fixes issue 18914
If the user clicks on undo while the transformation dialog is
open the currently active transaction will be closed.
From now on any change of the placement won't be recorded any
more so that e.g. canceling the dialog or an undo after
accepting the dialog leads to unexpected behaviour.
To fix the issue two new virtual methods onUndo() and onRedo()
are added to TaskDialog and reimplemented in TaskTransformDialog.
These functions make sure to open a new transaction.
This fixes issue 19152
