Usage:

Once the script is activated in the master plugins panel, all the features can be activated/deactivated in the script's panel:

Translate
Activates/deactivates translation snap

Rotate
Activates/deactivates rotation snap

Grid Size
Determines both the snap and the grid size (meters)

Resize Grid
When active resizes Layout's grid size according to the "Grid Size" parameter

Angle Offset
Determines the angle value for snapped rotations (degrees)

Object Snap
Activates/deactivates snap of the current selected object to other objects' pivot point

Distance
Determines the maximum influence distance for all objects to snap to

Workflow:

Using "Realtime Grid Snap" is very straightforward.
When any of the features is active, you can use Layout's standard manipulators
as you usually do, but the selected object now moves snapped on the grid
by the measure you decide.

Rotation snapping follows the same principle but obviously you don't have
any "grid" to snap to, instead you obtain some useful stepped rotations by
the angle you decide.

You can activate/deactivate all features separately at any time.
No keyframes are created while using "Realtime Snap"...everything is done
realtime on the current frame.

The "Object snap" feature let you interactively snap on other objects' pivot
points by simply moving the current selected object near the others.
When the current distance is within the range you specify using the "Distance"
parameter, the object get snapped on the other one.
Once snapped, you'll have to translate the object again by a small offset
to get it move around again...so you won't lose your current snap too easily.

This feature works also with animated objects and between cameras-and-objects
and lights-and-objects.


Watch the video

See for yourself a little demonstration of how to use "Realtime Grid Snap".
(4.5 Mbytes)