handles

Thanks, the hasProperty() function will fix it!

the hasproperty function should help to filter the ones out that dont have it. or isProperty dunno wich one it was for CAs

About identifying through handle IDs, using the appropriate method:

select (maxOps.getNodeByHandle 3) --for selection
obj = maxOps.getNodeByHandle 3 --for assignment

Thanks, trying to use custom handles rather than the handle function built into max. Allthough all objects get a unique handle if you merge objects into another scenes then the handle IDs can change. :(

Hi

I have used the following code to add an ID to an object:-

local DataCA = attributes data ; (parameters main;(myNewID type:#integer default:2 animatable:false;))
custAttributes.add $ DataCA

I then select the object with the following code:-

for obj in $* where obj.myNewID == 2 do select obj

If I have any objects in the scene that dont have this extra attribute I get the following error:-

-- Error occurred in obj loop
-- Frame:
-- obj: $Box01
-- Unknown property: "myNewID" in blabla

How would I get around this?

Thanks

Gram

Scripted Custom attributes are what you might want to look into

local DataCA = attributes data ; (parameters main;(myNewID type:#integer default:2 animatable:false;))
custAttributes.add $ DataCA

Thanks Graph,

Thats going to help alot:)

g

for obj in $* where obj.handle == 2 do select obj

Thanks Anubis, that makes sense. Is it possible to add your own hidden handels to objects? such as an ID tag. The .handle works ok but if you merge it into another scene then the handle number changes.

Ta

G

Better idea? - instead of using tags I can give objects a tag_code in the User Defined Properties. This way if the object gets renamed I can still select it via the tag_code.

g

Yes, User Defined Properties are nice for that purpose.
Also can use setAppData function (check in the help).
While the UDP are only for scene objects, with setAppData can "stamp" any MAXWrapper_object - i.e. modifiers, materials, controllers ...

Checked the Help it looks like I could use the AppData function to store IDs, Thanks.

I couldn't figure out the syntax, I am new to max script, many thanks!

g

select (for o in objects where o.handle == 2 collect o)[1]

just replace the 2 with the var holding the handle