[Rock-dev] [RFC] Proposal for a new default camera manipulator in Vizkit3D

[Sylvain Joyeux]

Using the camera for anything that is not a rover on a ground is a
pain. This is due to [the behaviour of the terrain manipulator
   https://github.com/rock-core/gui-vizkit3d/commit/3f8568dfa29b3b53eeb5284060b3faff5abcc402

I've created an osg manipulator for vizkit3d that maintains the same
mouse-to-movement behaviour but removes the constraints that are
within the terrain manipulator. It is currently on a PR

   https://github.com/rock-core/gui-vizkit3d/pull/11

Basically, it makes vizkit3d usable for things that do not have a
ground: the new rock-transformer tool
(https://github.com/rock-core/gui-vizkit3d/pull/rock-core/gui-vizkit#18),
free-flying systems (underwater, UAVs).

I would like to propose to change the default manipulator in vizkit3d
to this new manipulator. The various PRs I've created will allow
people to revert back to the terrain manipulator either from the
vizkit3d GUI or from their Ruby scripts.

Thoughts ?

Sylvain