The limits information is stored in the meta data as meta$limits, of
which this function makes use to sync the limits of layers.
Usage
sync_limits(meta, ...)
Arguments
meta
the meta data contains a matrix of limits in meta$limits
...
an arbitrary number of layers
Value
NULL (an event is attached on meta$limits so that
whenever the limits are changed, the layers will be updated using the new
limits)
Details
An event is attached to meta$limits so that whenever it is changed,
the limits all the layers will be reset by the method
layer$setLimits(), hence we only need to take care of
meta$limits and this function will do the rest of work.
Besides, the size and position of the brush will be restored.