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TouchDesigner MCP Server v2.8.0 - 21 MCP tools, 629 operators with clean parameter data, 69 Python API classes, 14 tutorials, 32 workflow patterns. Includes version system, experimental techniques KB, core tool enhancements, and experimental build support
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{
"id": "hold_chop",
"name": "Hold CHOP",
"displayName": "Hold CHOP",
"category": "CHOP",
"subcategory": "Generators",
"version": "",
"lastUpdated": "2025-08-07T07:50:01.845Z",
"sourceFile": "C:\\Program Files\\Derivative\\TouchDesigner\\Samples\\Learn\\OfflineHelp\\https.docs.derivative.ca\\Hold_CHOP.htm",
"url": "",
"description": "The Hold CHOP waits for a 0 to 1 step on its second input, at which time it reads the current values from the first input (one value per channel). It holds the values constant until it receives another 0 to 1 step. The second input controls the sampling. When the second input changes from 0 to 1, the first input is sampled. This value is held in the output until the second input changes from 0 to 1 again. Hold does not sample while the second input is 1, nor on the falling edge (1 to 0).",
"summary": "The Hold CHOP waits for a 0 to 1 step on its second input, at which time it reads the current values from the first input (one value per channel). It holds the values constant until it receives anothe",
"details": "",
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"tips": [],
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"description": "offtoon - Sample incoming channel when the trigger channel goes from 0 to above 0. whileon - Sample incoming channel while the trigger channel is above 0. ontooff - Sample incoming channel when the trigger channel goes above 0 to 0. whileoff - Sample incoming channel while the trigger channel is 0. valuechange - Sample incoming channel whenever the trigger channel changes.",
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"name": "Hold Last",
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"description": "hold - When On continue to sample the input, when Off hold the values.",
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"name": "Hold Last\tPulse",
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"description": "holdpulse - Sample the input and hold those values when pulsed.",
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"name": "Hold per Sample",
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"description": "holdsamples - Useful for working with multi-sample channels, this applies the hold to each sample of the channel instead of only the last sample in the channel.",
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{
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"name": "Time Slice",
"label": "Time Slice",
"group": "General",
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"description": "timeslice - Turning this on forces the channels to be \"Time Sliced\". A is the time between the last cook frame and the current cook frame.",
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"id": null,
"name": "Scope",
"label": "Scope",
"group": "General",
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"description": "scope - To determine which channels get affected, some CHOPs use a string on the Common page. See Pattern Matching.",
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"id": null,
"name": "Sample Rate Match",
"label": "Sample Rate Match",
"group": "General",
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"description": "srselect - - Handle cases where multiple input CHOPs' sample rates are different. When Resampling occurs, the curves are interpolated according to the Interpolation Method Option, or \"Linear\" if the Interpolate Options are not available.\n\n first - Use rate of first input to resample others. max - Resample to the highest sample rate. min - Resample to the lowest sample rate. err - Doesn't accept conflicting sample rates.",
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"name": "Resample At First Input's Rate",
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"description": "first - Use rate of first input to resample others. max - Resample to the highest sample rate. min - Resample to the lowest sample rate. err - Doesn't accept conflicting sample rates.",
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"name": "Export Method",
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"description": "exportmethod - - This will determine how to connect the channel to the parameter. Refer to the Export article for more information.\n\n datindex - Uses the docked table and references the channel via the index of the channel in the . datname - Uses the docked table and references the channel via the name of the channel in the . autoname - The channel is the full destination of where to export to, such has geo1/transform1:tx.",
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"description": "autoexportroot - This path points to the root node where all of the paths that exporting by Channel Name is : are relative to.",
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