Place an object on two layers, AND OR NOT layers

[Anonymous]

Hi guys,

see my attached photo.

Is it possible to do the following:

Scenario AND: make an object only be visible when both layers are on (Layer1 & Layer4).

Scenario OR: make an object only be visible when either layers are on (Layer3 or Layer4).

Scenario NOT: make an object visible when layer is turned off (Not Layer2).

And then be able to use more complicated amalgamations using the above.

I'm guessing using "Filters" is the way to go? Or is there a way to place a layer on "two layers" (this would be AND)

Regards,

James

[imadHabash]

Hi,

AutoCAD is a drafting program NOT a system of algebraic notation used to represent logical propositions . Those basic logics are used in another different fields like digital circuits . even "Filters" depends on a list of requirements that an object must meet to be included in a selection set. So the answer for your " Is it possible to do the following " is NO !! it's not possible . 🙂

[ВeekeeCZ]

No, one object at one layer. You need to make a copy of that object to be able to put it in another layer.

But you can have a layer of "Layer1 + Layer2" name. Then use wildcards for filtering a layer name eg *Layer2 

[Kent1Cooper]

I can almost imagine a way to do this with selected objects, with some analysis of what Layers are On and/or Off to determine whether or not to apply HIDEOBJECTS to the selected object(s).  But it would lose all results when you close the drawing, or if you use UNHIDE [UNISOLATEOBJECTS] about anything else.  And if you want to bring something hidden back to visibility as a result of the analysis, any- and everything else that might be hidden will also be un-hidden, though there might be a way to keep track of multiple objects and re-hide those other than the one(s) in question.  Are you willing to have restrictions on what Layer(s) affected object(s) can be on?  There's no way, for example, to make something visible if the condition for that involves its own Layer being turned Off.

[john.uhden]

I'm sure we could build a selection set filter mechanism to handle such a scenario using stuff like...

(-4 . "<NOT"), (-4 . "<OR"), (-4 . "<AND"), etc. with wildcards.