[Closed] how to count polygones in selection ?

thanks, work great, but I can’t figure out how to use it in selection, i tried like this but won’t work:

numgeofacesmdxray=#()
if isProperty selection[1] “mesh” != null do
(
for o in selection do
(
ot=o[1].mesh.faces.count ; append numgeofacesmdxray ot
totalfaces=totalfaces+ot
)
)
totalfaces=totalfaces as string
messagebox totalfaces

numgeofacesmdxray=numgeofacesmdxray as string
messagebox numgeofacesmdxray

I need it to for 2 variants:
1 – count all faces in selection
2 – if object in selection have more then x faces do something

Please can You tell me how to use it.

shouldn’t that read false not null ?

This will collect nuber of faces (not polygons) of any selected mesh object

for o in selection where isProperty o #mesh != undefined collect o.mesh.faces.count

null or false seams to work this same. I also tried this but if there are different then goemetry object code indicate 0 faces:

select objects
fac=0
for n in selection where superclassof o == geometryClass and canConvertTo o Editable_Mesh and classof o !=Targetobject do
(
if isProperty selection[1] “mesh” != false do fac=fac+selection[1].mesh.faces.count
)
fac=fac as string
messagebox fac

i wish i could say “work fine”. It work fine:) but … there is always but

it inicate 0 faces when objects are grouped so I used function to open groups and test it on real-life scene and code indicate 0 polygones because often groups are inside groups inside groups. I modyfied your code a bit:

fac=0
for n in selection where superclassof n == geometryClass and canConvertTo n Editable_Mesh and classof n !=Targetobject do
(
if isProperty selection[1] “mesh” != false do fac=fac+selection[1].mesh.faces.count
)

and to ungroup object:

fn ungroupAll objs =
(
group_arr = for o in objs where isValidNode o AND isGroupHead o collect o

		with redraw off
		(
		for o in group_arr do
			(
			setGroupOpen o true
			--ungroup o
				)
			)
			)
		
		ungroupAll objects

but don’t work in practice

This work fine for me. Even if the group is closed

fn checkFacesCount nodes limit: = if nodes.count != 0 do
 (
 	for o in nodes where isProperty o #mesh do 
 		if (cnt = o.mesh.faces.count) > limit do format "object:% facecount:%
" o.name cnt
 )
 checkFacesCount selection limit:1000

And even shorter example

fn checkFacesCount nodes limit: = if nodes.count != 0 do
(
	for o in nodes where isProperty o #mesh and \
	(cnt = o.mesh.faces.count) > limit do format "object:% facecount:%
" o.name cnt 
)
checkFacesCount selection limit:1000

null or false seams to work this same.

eh ?

IsProperty returns true or false and null is not the same as false !

try the following in the listener

null == false
null == true
null == undefined

the null is just an undefined variable which equals undefined until it’s not defined

In the same time:). I not saw your post.