Get the top group/node in a selection

[sinderltd]

Hey, I need to get the top node/group in a selection. I have groups within groups within groups etc, but when I get selection it gets all objects in the group but in no particular order. I need the one at top of the hierarchy. I am using isGroupHead to collect the group heads in a selection but it doesn't provide any order or hierarchy. Being able to sort the array based on the order or hierarchy would be cool.

[denisT.MaxDoctor]

fn isAncestor node child = 
(
	while child != node and child != undefined do (child = child.parent)
	child == node
)
fn sortByRelation n1 n2 = if isAncestor n1 n2 then -1 else if isAncestor n2 n1 then 1 else 0
	
nodes = selection as array 
qsort nodes sortByRelation

roots come first

[MartinBeh]

Or you could use isGroupHead to collect the group heads and keep the one that has an empty .parent property? 

top = for o in selection where ((isGroupHead o) and (o.parent == undefined)) collect o

[sinderltd]

Awesome thanks for the help, this works perfectly.

[sinderltd]

Amazing, thanks for your help, sorting the order is going to be super helpful!

[denisT.MaxDoctor]

---

@MartinBeh wrote:

Or you could use isGroupHead to collect the group heads and keep the one that has an empty .parent property? 

top = for o in selection where ((isGroupHead o) and (o.parent == undefined)) collect o

---

What if every grouphead has a parent?