Parameter Execute DAT
The Parameter Execute DAT runs a script when a parameter of any operator changes state. There are 4 ways a parameter can trigger the script: if its value, expression, export, or enable state changes.
Parameter Execute DATs are created with default python method placeholders. Unlike other execute DATs, the Parameter Execute DAT does not cook the node that it is watching, to avoid issues with recursive updates.
/active - While on, the DAT will respond to the Parameter that is referenced.
/executeloc - (Tscript only) Determines the location the script is run from.
- Current Node
/current- (Tscript only) The script is executed from the current node location.
- This Node
/here- The script is executed from the parent of the DAT. The DAT executes from the parent to make siblings of the DAT easy to access: DAT scripts used to execute from inside the DAT.
- Specified Operator
/op- The script is executed from the operator specified in the From Operator parameter below.
/from - This operator is also the path that the script will be executed from if the Execute From parameter is set to Specified Operator.
/op - Specify which operator the triggering parameter belongs to.
/parm - Specify which parameter to monitor for triggering the script.
/valuechange - The onValueChange() method executes when the parameter specified changes value in any way. It is called once each frame.
/expressionchange - The onExpressionChange() method executes whenever the specified parameter's expression changes. For example, changing the expression from
me.time.seconds will trigger the script.
/exportchange - The onExportChange() method executes if the export path to the specified parameter changes. For example, if the parameter is being exported to from /chopname/chan1 and that is changed so /chopname2/chan2 is now exporting to it, then the script will be triggered.
/enablechange - The onEnableChange() method executes if the specified parameter goes from being disabled to enabled.
/modechange - The onModeChange() method executes if the specified parameter goes from being disabled to enabled.
/custom - Monitor Custom Parameters..
/builtin - Monitor Built-In parameters.
/edit - Clicking this opens a text editor to edit text in the DAT.
Using Tscript Mode
Arguments are passed to the script to describe what type of change was detected. In Tscript you can view the arguments by including the command
echo $args in the script.