The Expression Helper allows you to create Vector and
Scalar input and output data streams that can be defined through mathematical
and logical expressions. By default, there are no input or output data
streams, and you create them as you need them. To learn more about expressions
in general, go to your 3ds Max Reference Guide and do
a search for Expression Controller. You will be given the information
needed to be productive with this Helper.
ON - (Bool) This input data
stream determines whether the operator is considered 'on' or 'off.' You
can connect other operators to this input channel such as a Bool Helper
to activate/deactivate the whole operator.
Time - (Time) This input data stream is used to define the local
time for the operator when the user wants to override the default system
time.
No Operator Outputs.
In/Out - Click this button to create, modify and remove your input
and output data streams for this operator. By clicking on this button
in a fresh Expression Helper, you'll get the following dropdown list:
Add Input - This flyout menu lets you choose whether you want
to create a Vector or Scalar input data stream. Once created, the data
stream will show up on the operator within the Wire Setup View.
Remove Input - When you have created input data streams, you can
remove them using this flyout menu.
Rename Input - When you have created input data streams, you can
rename them using this flyout menu.
Add Output - This flyout menu lets you choose whether you want
to create a Vector or Scalar output data stream. Once created, the data
stream will show up on the operator within the Wire Setup View.
Remove Output - When you have created output data streams, you
can remove them using this flyout menu.
Rename Output - When you have created output data streams, you
can remove them using this flyout menu.