Controller Type return true?

[eek]

Is the object selected when you query it? I'd always use object names or selections not $. You querying an controller with a function ()

$.pos.controller = position_xyz()
$.pos.controller == position_xyz

This should be correct, I do this all the time - just not at max atm.

[Gräck]

I'm sorry, this doesn't work.

I create a point helper (Position_XYZ is applied by default).
Then I type in $.pos.controller == position_xyz.
This returns false, but actually it should return true.

[eek]

hmm.. hehe i just got up - im returning false till i get a cup of coffee in me :)

$.pos.controller.controller == position_xyz()
$.pos.controller == position_xyz()

a = bezier_position()
$.pos.controller = a

$.pos.controller == a

$.pos.controller == positionController

[Gräck]

Ok, so you first assign a variable to the controller, then check if this variable is used. Well, that works fine if you first want to assign a controller, but what if you did not assign the controller via script?

What if I just want to check whether a specific controller type is assigned to an object or not?

Thanks for your help so far.

[eek]

Ok, so you first assign a variable to the controller, then check if this variable is used. Well, that works fine if you first want to assign a controller, but what if you did not assign the controller via script?

What if I just want to check whether a specific controller type is assigned to an object or not?

Thanks for your help so far.

Thats ok, im gunna head to work - in front of max i'll figure it out in like 2 secs. Meanwhile Mark looking at this post will first laugh, then give you the answer.

[marktsang]

hola,


$box01.pos.x_position.controller = float_script()
classof $box01.pos.x_position.controller == float_script --- returns true

you have to test against class not against the controller as this would test for instances not controller type

mark

[Gräck]

Perfect, thanks.

[JHN]

<strike>You'll need "classof controller" to check controller type.</strike>

Already answered I see :)

-Johan

[Bobo]

Now I want to ask whether this controller is assigned to the selected object or not, so I would go like this:
$.position.controller == springpositioncontroller()


The reason this returns false is because you are constructing a new instance of a spring position controller on the right side, then asking if that SAME controller is instanced in the position controller track of your object. Since you just constructed it, chances are zero that the existing controller IS that controller.

You can think of instances of a class (as the MAXScript Reference shows in the FAQ) as individuals from the same nation (say, Germans). If you give birth to a German guy (instance of a class called German), you can use classof() to ask if the guy is German, but what you wrote above is asking if a guy is a specific person (say, Michael Schumacher). ;)

Hope this helps understand the logic behind it.

[JHN]

There's two kind of answers that are both almost right, the answers Bobo gives (these are offcourse always right :bowdown: ) and the answers the rest give, wich will help you but sometimes point to the manual that what's his name co-wrote/write.. :P

Great explanation as ever!

-Johan

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