Persistents Structure

The Persistents struct provides methods to collect, create, and test persistent global variables.

Methods:

persistents.show()

Displays a list of persistent globals and their value.

persistents.remove <var_name>

Removes the named persistent global from the persistent global pool. The variable remains as a global variable and retains its value.

persistents.removeAll()

Removes all persistent globals from the persistent global pool. The variables remain as global variables and retain their value.

SCRIPT:

a= "Hello world"
persistent global a
persistent global b=box()
persistents.show()
persistents.remove #a
persistents.removeall()
a
b

SCRIPT:

"Hello world"
OK
$Box:Box002 @ [0.000000,0.000000,0.000000]
a: "Hello world"
b: $Box:Box002 @ [0.000000,0.000000,0.000000]
OK
OK
OK
"Hello world"
$Box:Box002 @ [0.000000,0.000000,0.000000]

persistents.gather()

This method returns an array of all persistent global variable names as <name> values.

Available in 3ds Max 2008 and higher. Previously, available in the Avguard Extensions.

persistents.make <global var name>

This method makes the specified global variable name persistent.

The name specified must be a global variable's name, otherwise a runtime error is thrown. See globalVars structure.

Available in 3ds Max 2008 and higher. Previously, available in the Avguard Extensions.

persistents.isPersistent <global var name>

Returns true , if the specified global variable name is persistent, false if it is not persistent.

Available in 3ds Max 2008 and higher. Previously, available in the Avguard Extensions.

EXAMPLE

global aVar  --define a global variable
--> OK  --done!
persistents.isPersistent #aVar --is it persistent?
--> false  --it is not!
persistents.make #aVar --make the existing global persistent
--> OK  --done!
persistents.isPersistent #aVar --see if it is persistent now
--> true  --now it is!
persistent global aNewPV --declare a variable as persistent global
--> undefined  --done, variable has a value of undefined
persistents.isPersistent #aNewPV --then see if it is persistent
--> true  --it is!
persistents.isPersistent #anUndeclaredVar --check an undeclared var.
--> false  --it is not persistent

Persistents Structure

See Also