FIFO DAT

From TouchDesigner 099 Wiki

Summary

The FIFO DAT maintains a user-set maximum number of rows in a table. You add rows using the appendRow() method found in DAT Class. When its capacity is reached, the first row is removed. After the maximum number of rows is reached, the oldest row is discarded when a new row is added.

Example:

op('fifo1').appendRow(['a','b','c'])

PythonIcon.png fifoDAT_Class

Parameters

Callbacks DAT /callbacks - The Callbacks DAT will execute once for each row added to the FIFO DAT.

Execute From executeloc - Determines the location the script is run from.

  • Current Node current - The script is executed from the current node location (for example, where 'cc' points to).
  • Callbacks DAT callbacks - The script is executed from the location of the DAT specified in the Callbacks DAT parameter.
  • Specified Operator op - The script is executed from the operator specified in the From Operator parameter below.

From Operator fromop - The operator whose state change will trigger the DAT to execute its script when Execute is set to Specified Operator. This operator is also the path that the script will be executed from if the Execute From parameter is set to Specified Operator.

Clamp Output clamp - The DAT is limited to 100 messages by default but with Clamp Output, this can be set to anything including unlimited.

Maximum Lines maxlines - Limits the number of messages, older messages are removed from the list first.

Clear Output clear - Deletes all lines except the heading. To clear with a python script op("opname").par.clear.pulse()

Keep First Row firstrow - Keeps first row in table.

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.