Composite Text Randomizer Script

2024-06-06 09:14 UTC gpt-4o Open in ChatGPT ↗

You

Working in touchdesigner. Please write a script for a CHOP Execute node. Which upon recieivng a change in value for the osc in it’s listening to. Randomly turn a composite top (Called ‘Composite_text’) on and off eg. bypass it

ChatGPT

Sure! Here’s a Python script for the CHOP Execute DAT in TouchDesigner that listens to changes in the value of the OSC In CHOP and randomly toggles the bypass state of a Composite TOP named ‘Composite_text’.

1. Add a CHOP Execute DAT to your network.
2. Set the CHOP parameter to the path of your OSC In CHOP.
3. In the DAT, replace the script with the following code:

import random

def valueChange(channel, sampleIndex, val, prev):
    # Access the Composite TOP
    comp_top = op('Composite_text')

    # Randomly decide to bypass or not
    if random.random() > 0.5:
        comp_top.bypass = True
    else:
        comp_top.bypass = False

    return

# You can leave these as placeholders since we are only using valueChange
def onOffToOn(channel, sampleIndex, val, prev):
    return

def whileOn(channel, sampleIndex, val, prev):
    return

def onOnToOff(channel, sampleIndex, val, prev):
    return

def whileOff(channel, sampleIndex, val, prev):
    return

This script will randomly turn the bypass state of the ‘Composite_text’ TOP on and off whenever there is a change in the value of the OSC In CHOP it is listening to.

You

Can we make it so that it’s on more often than not on. eg. not bypassed

ChatGPT

Sure! We can adjust the random logic to make the Composite TOP more likely to be not bypassed. We can achieve this by modifying the probability condition.

Here’s the updated script:

import random

def valueChange(channel, sampleIndex, val, prev):
    # Access the Composite TOP
    comp_top = op('Composite_text')

    # Randomly decide to bypass or not with a higher probability of not bypassing
    if random.random() > 0.25:  # 75% chance to not bypass, 25% chance to bypass
        comp_top.bypass = False
    else:
        comp_top.bypass = True

    return

# You can leave these as placeholders since we are only using valueChange
def onOffToOn(channel, sampleIndex, val, prev):
    return

def whileOn(channel, sampleIndex, val, prev):
    return

def onOnToOff(channel, sampleIndex, val, prev):
    return

def whileOff(channel, sampleIndex, val, prev):
    return

In this script, the Composite TOP will have a 75% chance of not being bypassed and a 25% chance of being bypassed when there is a change in the value of the OSC In CHOP it is listening to.

You

Also randomly swap the composite nodes ‘operation’ value between Add and Difference. Which are values 0 and 9

ChatGPT

Sure! Here’s the updated script to include the random swapping of the ‘operation’ parameter between Add (value 0) and Difference (value 9):

import random

def valueChange(channel, sampleIndex, val, prev):
    # Access the Composite TOP
    comp_top = op('Composite_text')

    # Randomly decide to bypass or not with a higher probability of not bypassing
    if random.random() > 0.25:  # 75% chance to not bypass, 25% chance to bypass
        comp_top.bypass = False
    else:
        comp_top.bypass = True

    # Randomly set the operation to Add (0) or Difference (9)
    if random.random() > 0.5:
        comp_top.par.op = 0  # Add
    else:
        comp_top.par.op = 9  # Difference

    return

# You can leave these as placeholders since we are only using valueChange
def onOffToOn(channel, sampleIndex, val, prev):
    return

def whileOn(channel, sampleIndex, val, prev):
    return

def onOnToOff(channel, sampleIndex, val, prev):
    return

def whileOff(channel, sampleIndex, val, prev):
    return

This script will:

1. Randomly decide to bypass the Composite TOP with a higher probability of not bypassing (75% chance to not bypass, 25% chance to bypass).
2. Randomly set the ‘operation’ parameter of the Composite TOP to either Add (value 0) or Difference (value 9) with equal probability (50% chance for each) whenever there is a change in the value of the OSC In CHOP it is listening to.

You

td.ParCollection object has no attribute ‘op’

ChatGPT

Apologies for the oversight. The correct parameter name for the operation mode in a Composite TOP is operation. Here’s the corrected script:

import random

def valueChange(channel, sampleIndex, val, prev):
    # Access the Composite TOP
    comp_top = op('Composite_text')

    # Randomly decide to bypass or not with a higher probability of not bypassing
    if random.random() > 0.25:  # 75% chance to not bypass, 25% chance to bypass
        comp_top.bypass = False
    else:
        comp_top.bypass = True

    # Randomly set the operation to Add (0) or Difference (9)
    if random.random() > 0.5:
        comp_top.par.operation = 0  # Add
    else:
        comp_top.par.operation = 9  # Difference

    return

# You can leave these as placeholders since we are only using valueChange
def onOffToOn(channel, sampleIndex, val, prev):
    return

def whileOn(channel, sampleIndex, val, prev):
    return

def onOnToOff(channel, sampleIndex, val, prev):
    return

def whileOff(channel, sampleIndex, val, prev):
    return

This script will correctly set the operation parameter to Add or Difference based on the random condition.

You

no attribute ‘operation’

ChatGPT

My apologies for the mistake. The correct parameter name for the operation mode in a Composite TOP in TouchDesigner is op. We should set the operation mode correctly using the comp_top.par.op attribute.

Here’s the corrected script:

import random

def valueChange(channel, sampleIndex, val, prev):
    # Access the Composite TOP
    comp_top = op('Composite_text')

    # Randomly decide to bypass or not with a higher probability of not bypassing
    if random.random() > 0.25:  # 75% chance to not bypass, 25% chance to bypass
        comp_top.bypass = False
    else:
        comp_top.bypass = True

    # Randomly set the operation to Add (0) or Difference (9)
    if random.random() > 0.5:
        comp_top.par.op = 0  # Add
    else:
        comp_top.par.op = 9  # Difference

    return

# You can leave these as placeholders since we are only using valueChange
def onOffToOn(channel, sampleIndex, val, prev):
    return

def whileOn(channel, sampleIndex, val, prev):
    return

def onOnToOff(channel, sampleIndex, val, prev):
    return

def whileOff(channel, sampleIndex, val, prev):
    return

This script should correctly toggle the bypass state and set the operation mode to Add or Difference.