New function: show all / isolate for group

[JiajunZhang-neu]

Hi,

I am working with many groups, each consists many neurons in VVDviewer. Below is one of my daily work case:

Group 1 (neuron 1 - 20), Group 2 (neuron 21 - 40)
a) compare neuron 1 of group 1 and neuron 21 of group 2.
- Operation: isolate neuron 1, toggle neuron 21 on.
b) compare all neurons (1 - 20) of group 1 and neuron 21 of group 2.
- Operation: click 19 times to toggle neuron 2 - 20 on. (alternative, show all then click 19 times to toggle neuron 22 - 40 of group 2 off)

Currently the isolate and show all functions only work for objects and affect visibility globally. As it shown in the above case, it would be really helpful to have show all / isolate function also for groups.

One potential solution might be:
- show all (mesh / volume) = toggle visibility of all objects in the group to ON, while not change the visibility of objects in other group;
- isolate (mesh / volume) = toggle visibility of selected object to ON, other objects of the same group to OFF, while not change the visibility of objects in other group;
- show all (group) = toggle all groups visibility to ON, while not change the visibility of objects.;
- isolate (group) = toggle selected group visibility to ON, other groups visibility to OFF, while not change the visibility of objects.

Then for the above work case b), I only need to right click neuron 1 and select show all, instead of 19 clicks.

Could you help me with such new function? Thank you in advance!

Cheers,
Jiajun
Ito lab, University of Cologne