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TouchDesigner Documentation MCP Server v2.3 - Pure MCP server for VS Code/Codium with comprehensive operator documentation for 629 operators + 7 tutorials across all categories (TOP, CHOP, SOP, DAT, MAT, COMP, POP). Features experimental POP operators wit

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{
  "id": "constant_chop",
  "name": "Constant CHOP",
  "displayName": "Constant CHOP",
  "category": "CHOP",
  "subcategory": "Generators",
  "version": "",
  "lastUpdated": "2025-08-07T07:49:58.727Z",
  "sourceFile": "C:\\Program Files\\Derivative\\TouchDesigner\\Samples\\Learn\\OfflineHelp\\https.docs.derivative.ca\\Constant_CHOP.htm",
  "url": "",
  "description": "The Constant CHOP creates new constant-value channels. Each channel can be named and assigned a different value. To create a channel, simply enter a channel name in a name parameter on the Constant page, then adjust the below value.",
  "summary": "The Constant CHOP creates new constant-value channels. Each channel can be named and assigned a different value. To create a channel, simply enter a channel name in a name parameter on the Constant pa",
  "details": "",
  "usage": "",
  "tips": [],
  "warnings": [],
  "parameters": [
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      "id": null,
      "name": "Constant",
      "label": "Constant",
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      "description": "From Derivative\n\t\t\n\t\t\n\t\t\n\t\t\n\t\tJump to navigation\n\t\tJump to search\n\t\t\nThe Constant  creates new constant-value channels. Each channel can be named and assigned a different value. To create a channel, simply enter a channel name in a name parameter on the Constant page, then adjust the below value.\t\t\nThe  interval (length of time) is one sample long by default (one sample at index 0 = frame 1). An interval range can be optionally set in the Channel page.\nYou can use Pattern Expansion like geo[1-4][xyz] to generate multiple channels in one line.\nA simple Constant  with no inputs is the most common use of the . However, the channels names and values can be set up by connecting any  to its input and clicking the Snapshot Input button (Snap page). This allows you to get some channels from another  and adjust them with sliders in the Constant .\t\t\t\nThe second input can be used to add offsets to the constant values. When the second input (Active) is greater than zero, any change to the first input will be added to the output of the . This is useful for adjusting Constant  values from external input devices like a MIDI slider box. For example you can connect the mouse or a MIDI slider box to a Mouse In CHOP or MIDI In CHOP, and you can raise/lower the Constant  values by holding the Active input On, while moving the mouse or sliders.\nconstantCHOP_Class\n\nContents\n \n \n \n \n \n \n \n \n \n\n\n\n\n\nThe channel is created if there is a name in the Name field. You can enter channel name patterns in the Name field, so you can create many channels with the same value. For example, try entering:\t\t\t\t\n\ngeo[1-5:2]:s[xyz]\n\nin the first channel field instead of \"chan1\". See Pattern Expansion, Pattern Matching.\n\n  const - Sequence of name/value pairs defining the channels\n\n\n\n  const0name - The name of the channel.\n\n\n\n  const0value - The value of the channel.\n\n\n\n\n\n\n\t\t\nThe Constant  can preset its channel names and values using the Snap page. We often want to grab some channels (Snapshot) and edit them later.\n\n  snap - The optional first  input on Constant is used when the Snapshot Input button is pressed. At this time, the channel names and values at the  input at the current frame are used to initialize the channel names and values of the constant sliders.\t\nTo snap channels from other OPs, connect a Parameter  to the Constant  and hit Snapshot Input.\t\t\t\nYou can simulate the pressing of the Snapshot Input button from a script. To simulate the clicking of a  dialog box button from a script use the Par Class pulse() Method:\nExample:\n\n\n\n\n\n\n  first - The First Channel parameter is used to select a smaller set of the incoming channels. This is useful if the number of incoming channels is greater than the 40 channels the Constant  can hold, and you must break it into several CHOPs.\n\n\n\n  current - This is used with the second input as described above, when you want to add a displacement to channels by using external devices or sources.\t\nWhen Active Needs Current is On, the second  input (the Active input) has an effect only if the Constant  is the current .\nWhen Active Needs Current is Off, the Constant  is affected any time the Active input is on (greater than 0).\nThis is used by the Channel Editor when editing keyframes using CHOPs. An input device like a button in the Keyboard In  or a MIDI keyboard can be fed to the Active input of many Constant CHOPs. Only the current  will be affected if this option is On.\n\n\n\n\n  single - Turn this Off to make constant channels that are longer than one .\n\n\n\n  start - Start and end of the interval, expressed in Units (seconds, frames or samples). The parameters are expressed in the Units found on the Common page. To set the  to be 100 samples long, Set Units to Samples, Single  Off and Start / End to 0 and 99.\n\n\n\n  startunit -  - Select the units to use for this parameter, Samples, Frames, or Seconds.\n\n samples - frames - seconds -\n\n  end - Start and end of the interval, expressed in Units (seconds, frames or samples). The parameters are expressed in the Units found on the Common page. To set the  to be 100 samples long, Set Units to Samples, Single  Off and Start / End to 0 and 99.\n\n\n\n  endunit -  - Select the units to use for this parameter, Samples, Frames, or Seconds.\n\n samples - frames - seconds -\n\n  rate - The sample rate of the channels, in samples per second.\n\n\n\n  left -  - The left extend conditions (before range).\n\n hold - Hold the current value of the channel. slope - Continue the slope before the start of the channel. cycle - Cycle the channel repeatedly. mirror - Cycle the channel repeatedly, mirroring every other cycle. default - Use the constant value specified in the Default Value parameter.\n\n  right -  - The right extend conditions (after range).\n\n hold - Hold the current value of the channel. slope - Continue the slope after the end of the channel. cycle - Cycle the channel repeatedly. mirror - Cycle the channel repeatedly, mirroring every other cycle. default - Use the constant value specified in the Default Value parameter.\n\n  defval - The value used for the Default Value extend condition.\n\n\n\n\n\n  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.\n\n\n\n  scope - To determine which channels get affected, some CHOPs use a  string on the Common page.\n\n\n\n  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.\n\n  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.\n\n  autoexportroot - This path points to the root node where all of the paths that exporting by Channel Name is : are relative to.\n\n\n\n  exporttable - The  used to hold the export information when using the  Table  Methods (See above).\n\n\n\n\n\n -\n -\n\nExtra Information for the Constant  can be accessed via an Info CHOP.\n\n\n\n - Start of the  interval in samples. - Number of samples in the . - The samplerate of the channels in frames per second. - Number of channels in the . - 1 if  is  enabled, 0 otherwise. - A count of how often the export connections have been updated.\n - Number of times the operator has cooked since the process started. - Duration of the last cook in milliseconds. - Frame number when this operator was last cooked relative to the component timeline. - Frame number when this operator was last cooked relative to the absolute time. - Time in milliseconds at which the operator started cooking in the frame it was cooked. - Time in milliseconds at which the operator finished cooking in the frame it was cooked. - 1 if operator was cooked this frame. - Number of warnings in this operator if any. - Number of errors in this operator if any.\nTouchDesigner Build: Latest\\nwikieditorwikieditorwikieditorwikieditorwikieditor2022.241402021.100002020.200002018.28070before 2018.28070\nCHOPs\n• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • \n\nAn Operator Family which operate on Channels (a sequence of numbers (Samples)) which are used for animation, audio, mathematics, simulation, logic, UI construction, and data streamed from/to devices and protocols.\n\n\n\nA CHOP outputs one or more channels, where a channel is simply a sequence of numbers (Samples), representing motion, audio, etc. Channels are passed between CHOPs in TouchDesigner networks. Channels can be Exported to Parameters.\n\n\n\nsamples-per-second of a CHOP. Each CHOP in your network has a sample rate. In contrast, the overall timeline has a Frame Rate, which is the number of frames to cook and display per second, generally your monitor display frequency, default 60.\n\n\n\nThe term \"Frame\" is a measurement of time used (1) in the Timeline, (2) as a time-unit in CHOPs, and (3) as a time unit in movie files that are read into TOPs and written out from TOPs. The frame rate is the frames per second (FPS).\n\n\n\nsamples-per-second of a CHOP. Each CHOP in your network has a sample rate. In contrast, the overall timeline has a Frame Rate, which is the number of frames to cook and display per second, generally your monitor display frequency, default 60.\n\n\n\nA Time Slice is the time from the last cook frame to the current cook frame. In CHOPs it is the set of short channels that contain the CHOP channels' samples between the last and the current cook frame.\n\n\n\nA parameter in most CHOPs that restricts which channels of that CHOP will be affected. Normally all channels of a CHOP are affected by the operator. TOPs have Channel Mask, a similar feature.\n\n\n\nExporting is the connection of CHOP channels to parameters of operators. The output of each exporting CHOP is one or more channels, active only while the CHOP Viewer is on. The current value of a channel can be exported to a parameter of any operator, overriding that parameter's value. See Parameter.\n\n\n\nAn Operator Family that manipulates text strings: multi-line text or tables. Multi-line text is often a python Script or GLSL Shader, but can be any multi-line text. Tables are rows and columns of cells, each containing a text string.\n\n\n\nThe location of an operator within the TouchDesigner environment, for example, /geo1/circle1, a node called circle1 in a component called geo1. The path / is called Root. This path is displayed at the top of every Pane, showing which Component's network you are currently in. To refer instead to a filesystem folder, directory, disk file or http: address, see Folder.\n\n\n\nEvery operator in TouchDesigner has a set of control Parameters that can be integer or floating point numbers, menus, binary toggles, text strings or operator paths, which determine the output of the operator.\n\n\n\nTouchDesigner is a hierarchy of components. \"root\" is the top-most network in the hierarchy. The Network Path or Path for root is simply /. A typical path is /project1/moviein1.\n\n\n\n\n\n\n\n\nRetrieved from \"https://docs.derivative.ca/index.php?title=Constant_CHOP&oldid=32267\"\n\t\tCategory: CHOPs",
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      "id": null,
      "name": "Constant",
      "label": "Constant",
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      "description": "From Derivative\n\t\t\n\t\t\n\t\t\n\t\t\n\t\tJump to navigation\n\t\tJump to search\n\t\t\nThe Constant  creates new constant-value channels. Each channel can be named and assigned a different value. To create a channel, simply enter a channel name in a name parameter on the Constant page, then adjust the below value.\t\t\nThe  interval (length of time) is one sample long by default (one sample at index 0 = frame 1). An interval range can be optionally set in the Channel page.\nYou can use Pattern Expansion like geo[1-4][xyz] to generate multiple channels in one line.\nA simple Constant  with no inputs is the most common use of the . However, the channels names and values can be set up by connecting any  to its input and clicking the Snapshot Input button (Snap page). This allows you to get some channels from another  and adjust them with sliders in the Constant .\t\t\t\nThe second input can be used to add offsets to the constant values. When the second input (Active) is greater than zero, any change to the first input will be added to the output of the . This is useful for adjusting Constant  values from external input devices like a MIDI slider box. For example you can connect the mouse or a MIDI slider box to a Mouse In CHOP or MIDI In CHOP, and you can raise/lower the Constant  values by holding the Active input On, while moving the mouse or sliders.\nconstantCHOP_Class\n\nContents\n \n \n \n \n \n \n \n \n \n\n\n\n\n\nThe channel is created if there is a name in the Name field. You can enter channel name patterns in the Name field, so you can create many channels with the same value. For example, try entering:\t\t\t\t\n\ngeo[1-5:2]:s[xyz]\n\nin the first channel field instead of \"chan1\". See Pattern Expansion, Pattern Matching.\n\n  const - Sequence of name/value pairs defining the channels\n\n\n\n  const0name - The name of the channel.\n\n\n\n  const0value - The value of the channel.\n\n\n\n\n\n\n\t\t\nThe Constant  can preset its channel names and values using the Snap page. We often want to grab some channels (Snapshot) and edit them later.\n\n  snap - The optional first  input on Constant is used when the Snapshot Input button is pressed. At this time, the channel names and values at the  input at the current frame are used to initialize the channel names and values of the constant sliders.\t\nTo snap channels from other OPs, connect a Parameter  to the Constant  and hit Snapshot Input.\t\t\t\nYou can simulate the pressing of the Snapshot Input button from a script. To simulate the clicking of a  dialog box button from a script use the Par Class pulse() Method:\nExample:\n\n\n\n\n\n\n  first - The First Channel parameter is used to select a smaller set of the incoming channels. This is useful if the number of incoming channels is greater than the 40 channels the Constant  can hold, and you must break it into several CHOPs.\n\n\n\n  current - This is used with the second input as described above, when you want to add a displacement to channels by using external devices or sources.\t\nWhen Active Needs Current is On, the second  input (the Active input) has an effect only if the Constant  is the current .\nWhen Active Needs Current is Off, the Constant  is affected any time the Active input is on (greater than 0).\nThis is used by the Channel Editor when editing keyframes using CHOPs. An input device like a button in the Keyboard In  or a MIDI keyboard can be fed to the Active input of many Constant CHOPs. Only the current  will be affected if this option is On.\n\n\n\n\n  single - Turn this Off to make constant channels that are longer than one .\n\n\n\n  start - Start and end of the interval, expressed in Units (seconds, frames or samples). The parameters are expressed in the Units found on the Common page. To set the  to be 100 samples long, Set Units to Samples, Single  Off and Start / End to 0 and 99.\n\n\n\n  startunit -  - Select the units to use for this parameter, Samples, Frames, or Seconds.\n\n samples - frames - seconds -\n\n  end - Start and end of the interval, expressed in Units (seconds, frames or samples). The parameters are expressed in the Units found on the Common page. To set the  to be 100 samples long, Set Units to Samples, Single  Off and Start / End to 0 and 99.\n\n\n\n  endunit -  - Select the units to use for this parameter, Samples, Frames, or Seconds.\n\n samples - frames - seconds -\n\n  rate - The sample rate of the channels, in samples per second.\n\n\n\n  left -  - The left extend conditions (before range).\n\n hold - Hold the current value of the channel. slope - Continue the slope before the start of the channel. cycle - Cycle the channel repeatedly. mirror - Cycle the channel repeatedly, mirroring every other cycle. default - Use the constant value specified in the Default Value parameter.\n\n  right -  - The right extend conditions (after range).\n\n hold - Hold the current value of the channel. slope - Continue the slope after the end of the channel. cycle - Cycle the channel repeatedly. mirror - Cycle the channel repeatedly, mirroring every other cycle. default - Use the constant value specified in the Default Value parameter.\n\n  defval - The value used for the Default Value extend condition.\n\n\n\n\n\n  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.\n\n\n\n  scope - To determine which channels get affected, some CHOPs use a  string on the Common page.\n\n\n\n  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.\n\n  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.\n\n  autoexportroot - This path points to the root node where all of the paths that exporting by Channel Name is : are relative to.\n\n\n\n  exporttable - The  used to hold the export information when using the  Table  Methods (See above).\n\n\n\n\n\n -\n -\n\nExtra Information for the Constant  can be accessed via an Info CHOP.\n\n\n\n - Start of the  interval in samples. - Number of samples in the . - The samplerate of the channels in frames per second. - Number of channels in the . - 1 if  is  enabled, 0 otherwise. - A count of how often the export connections have been updated.\n - Number of times the operator has cooked since the process started. - Duration of the last cook in milliseconds. - Frame number when this operator was last cooked relative to the component timeline. - Frame number when this operator was last cooked relative to the absolute time. - Time in milliseconds at which the operator started cooking in the frame it was cooked. - Time in milliseconds at which the operator finished cooking in the frame it was cooked. - 1 if operator was cooked this frame. - Number of warnings in this operator if any. - Number of errors in this operator if any.\nTouchDesigner Build: Latest\\nwikieditorwikieditorwikieditorwikieditorwikieditor2022.241402021.100002020.200002018.28070before 2018.28070\nCHOPs\n• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • \n\nAn Operator Family which operate on Channels (a sequence of numbers (Samples)) which are used for animation, audio, mathematics, simulation, logic, UI construction, and data streamed from/to devices and protocols.\n\n\n\nA CHOP outputs one or more channels, where a channel is simply a sequence of numbers (Samples), representing motion, audio, etc. Channels are passed between CHOPs in TouchDesigner networks. Channels can be Exported to Parameters.\n\n\n\nsamples-per-second of a CHOP. Each CHOP in your network has a sample rate. In contrast, the overall timeline has a Frame Rate, which is the number of frames to cook and display per second, generally your monitor display frequency, default 60.\n\n\n\nThe term \"Frame\" is a measurement of time used (1) in the Timeline, (2) as a time-unit in CHOPs, and (3) as a time unit in movie files that are read into TOPs and written out from TOPs. The frame rate is the frames per second (FPS).\n\n\n\nsamples-per-second of a CHOP. Each CHOP in your network has a sample rate. In contrast, the overall timeline has a Frame Rate, which is the number of frames to cook and display per second, generally your monitor display frequency, default 60.\n\n\n\nA Time Slice is the time from the last cook frame to the current cook frame. In CHOPs it is the set of short channels that contain the CHOP channels' samples between the last and the current cook frame.\n\n\n\nA parameter in most CHOPs that restricts which channels of that CHOP will be affected. Normally all channels of a CHOP are affected by the operator. TOPs have Channel Mask, a similar feature.\n\n\n\nExporting is the connection of CHOP channels to parameters of operators. The output of each exporting CHOP is one or more channels, active only while the CHOP Viewer is on. The current value of a channel can be exported to a parameter of any operator, overriding that parameter's value. See Parameter.\n\n\n\nAn Operator Family that manipulates text strings: multi-line text or tables. Multi-line text is often a python Script or GLSL Shader, but can be any multi-line text. 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      "description": "The Constant  creates new constant-value channels. Each channel can be named and assigned a different value. To create a channel, simply enter a channel name in a name parameter on the Constant page, then adjust the below value.\t\t\nThe  interval (length of time) is one sample long by default (one sample at index 0 = frame 1). An interval range can be optionally set in the Channel page.\nYou can use Pattern Expansion like geo[1-4][xyz] to generate multiple channels in one line.\nA simple Constant  with no inputs is the most common use of the . However, the channels names and values can be set up by connecting any  to its input and clicking the Snapshot Input button (Snap page). This allows you to get some channels from another  and adjust them with sliders in the Constant .\t\t\t\nThe second input can be used to add offsets to the constant values. When the second input (Active) is greater than zero, any change to the first input will be added to the output of the . This is useful for adjusting Constant  values from external input devices like a MIDI slider box. For example you can connect the mouse or a MIDI slider box to a Mouse In CHOP or MIDI In CHOP, and you can raise/lower the Constant  values by holding the Active input On, while moving the mouse or sliders.\nconstantCHOP_Class\n\nContents\n \n \n \n \n \n \n \n \n \n\n\n\n\n\nThe channel is created if there is a name in the Name field. You can enter channel name patterns in the Name field, so you can create many channels with the same value. For example, try entering:\t\t\t\t\n\ngeo[1-5:2]:s[xyz]\n\nin the first channel field instead of \"chan1\". See Pattern Expansion, Pattern Matching.\n\n  const - Sequence of name/value pairs defining the channels\n\n\n\n  const0name - The name of the channel.\n\n\n\n  const0value - The value of the channel.\n\n\n\n\n\n\n\t\t\nThe Constant  can preset its channel names and values using the Snap page. We often want to grab some channels (Snapshot) and edit them later.\n\n  snap - The optional first  input on Constant is used when the Snapshot Input button is pressed. At this time, the channel names and values at the  input at the current frame are used to initialize the channel names and values of the constant sliders.\t\nTo snap channels from other OPs, connect a Parameter  to the Constant  and hit Snapshot Input.\t\t\t\nYou can simulate the pressing of the Snapshot Input button from a script. To simulate the clicking of a  dialog box button from a script use the Par Class pulse() Method:\nExample:\n\n\n\n\n\n\n  first - The First Channel parameter is used to select a smaller set of the incoming channels. This is useful if the number of incoming channels is greater than the 40 channels the Constant  can hold, and you must break it into several CHOPs.\n\n\n\n  current - This is used with the second input as described above, when you want to add a displacement to channels by using external devices or sources.\t\nWhen Active Needs Current is On, the second  input (the Active input) has an effect only if the Constant  is the current .\nWhen Active Needs Current is Off, the Constant  is affected any time the Active input is on (greater than 0).\nThis is used by the Channel Editor when editing keyframes using CHOPs. An input device like a button in the Keyboard In  or a MIDI keyboard can be fed to the Active input of many Constant CHOPs. Only the current  will be affected if this option is On.\n\n\n\n\n  single - Turn this Off to make constant channels that are longer than one .\n\n\n\n  start - Start and end of the interval, expressed in Units (seconds, frames or samples). The parameters are expressed in the Units found on the Common page. To set the  to be 100 samples long, Set Units to Samples, Single  Off and Start / End to 0 and 99.\n\n\n\n  startunit -  - Select the units to use for this parameter, Samples, Frames, or Seconds.\n\n samples - frames - seconds -\n\n  end - Start and end of the interval, expressed in Units (seconds, frames or samples). The parameters are expressed in the Units found on the Common page. To set the  to be 100 samples long, Set Units to Samples, Single  Off and Start / End to 0 and 99.\n\n\n\n  endunit -  - Select the units to use for this parameter, Samples, Frames, or Seconds.\n\n samples - frames - seconds -\n\n  rate - The sample rate of the channels, in samples per second.\n\n\n\n  left -  - The left extend conditions (before range).\n\n hold - Hold the current value of the channel. slope - Continue the slope before the start of the channel. cycle - Cycle the channel repeatedly. mirror - Cycle the channel repeatedly, mirroring every other cycle. default - Use the constant value specified in the Default Value parameter.\n\n  right -  - The right extend conditions (after range).\n\n hold - Hold the current value of the channel. slope - Continue the slope after the end of the channel. cycle - Cycle the channel repeatedly. mirror - Cycle the channel repeatedly, mirroring every other cycle. default - Use the constant value specified in the Default Value parameter.\n\n  defval - The value used for the Default Value extend condition.\n\n\n\n\n\n  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.\n\n\n\n  scope - To determine which channels get affected, some CHOPs use a  string on the Common page.\n\n\n\n  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.\n\n  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.\n\n  autoexportroot - This path points to the root node where all of the paths that exporting by Channel Name is : are relative to.\n\n\n\n  exporttable - The  used to hold the export information when using the  Table  Methods (See above).\n\n\n\n\n\n -\n -\n\nExtra Information for the Constant  can be accessed via an Info CHOP.\n\n\n\n - Start of the  interval in samples. - Number of samples in the . - The samplerate of the channels in frames per second. - Number of channels in the . - 1 if  is  enabled, 0 otherwise. - A count of how often the export connections have been updated.\n - Number of times the operator has cooked since the process started. - Duration of the last cook in milliseconds. - Frame number when this operator was last cooked relative to the component timeline. - Frame number when this operator was last cooked relative to the absolute time. - Time in milliseconds at which the operator started cooking in the frame it was cooked. - Time in milliseconds at which the operator finished cooking in the frame it was cooked. - 1 if operator was cooked this frame. - Number of warnings in this operator if any. - Number of errors in this operator if any.\nTouchDesigner Build: Latest\\nwikieditorwikieditorwikieditorwikieditorwikieditor2022.241402021.100002020.200002018.28070before 2018.28070\nCHOPs\n• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • \n\nAn Operator Family which operate on Channels (a sequence of numbers (Samples)) which are used for animation, audio, mathematics, simulation, logic, UI construction, and data streamed from/to devices and protocols.\n\n\n\nA CHOP outputs one or more channels, where a channel is simply a sequence of numbers (Samples), representing motion, audio, etc. Channels are passed between CHOPs in TouchDesigner networks. Channels can be Exported to Parameters.\n\n\n\nsamples-per-second of a CHOP. Each CHOP in your network has a sample rate. In contrast, the overall timeline has a Frame Rate, which is the number of frames to cook and display per second, generally your monitor display frequency, default 60.\n\n\n\nThe term \"Frame\" is a measurement of time used (1) in the Timeline, (2) as a time-unit in CHOPs, and (3) as a time unit in movie files that are read into TOPs and written out from TOPs. The frame rate is the frames per second (FPS).\n\n\n\nsamples-per-second of a CHOP. Each CHOP in your network has a sample rate. In contrast, the overall timeline has a Frame Rate, which is the number of frames to cook and display per second, generally your monitor display frequency, default 60.\n\n\n\nA Time Slice is the time from the last cook frame to the current cook frame. In CHOPs it is the set of short channels that contain the CHOP channels' samples between the last and the current cook frame.\n\n\n\nA parameter in most CHOPs that restricts which channels of that CHOP will be affected. Normally all channels of a CHOP are affected by the operator. TOPs have Channel Mask, a similar feature.\n\n\n\nExporting is the connection of CHOP channels to parameters of operators. The output of each exporting CHOP is one or more channels, active only while the CHOP Viewer is on. The current value of a channel can be exported to a parameter of any operator, overriding that parameter's value. See Parameter.\n\n\n\nAn Operator Family that manipulates text strings: multi-line text or tables. Multi-line text is often a python Script or GLSL Shader, but can be any multi-line text. Tables are rows and columns of cells, each containing a text string.\n\n\n\nThe location of an operator within the TouchDesigner environment, for example, /geo1/circle1, a node called circle1 in a component called geo1. The path / is called Root. This path is displayed at the top of every Pane, showing which Component's network you are currently in. To refer instead to a filesystem folder, directory, disk file or http: address, see Folder.\n\n\n\nEvery operator in TouchDesigner has a set of control Parameters that can be integer or floating point numbers, menus, binary toggles, text strings or operator paths, which determine the output of the operator.\n\n\n\nTouchDesigner is a hierarchy of components. \"root\" is the top-most network in the hierarchy. The Network Path or Path for root is simply /. A typical path is /project1/moviein1.\n\n\n\n\n\n\n\n\nRetrieved from \"https://docs.derivative.ca/index.php?title=Constant_CHOP&oldid=32267\"",
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      "description": "snap - The optional first  input on Constant is used when the Snapshot Input button is pressed. At this time, the channel names and values at the  input at the current frame are used to initialize the channel names and values of the constant sliders.\t\nTo snap channels from other OPs, connect a Parameter  to the Constant  and hit Snapshot Input.\t\t\t\nYou can simulate the pressing of the Snapshot Input button from a script. To simulate the clicking of a  dialog box button from a script use the Par Class pulse() Method:\nExample:",
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      "description": "current - This is used with the second input as described above, when you want to add a displacement to channels by using external devices or sources.\t\nWhen Active Needs Current is On, the second  input (the Active input) has an effect only if the Constant  is the current .\nWhen Active Needs Current is Off, the Constant  is affected any time the Active input is on (greater than 0).\nThis is used by the Channel Editor when editing keyframes using CHOPs. An input device like a button in the Keyboard In  or a MIDI keyboard can be fed to the Active input of many Constant CHOPs. Only the current  will be affected if this option is On.",
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      "description": "end - Start and end of the interval, expressed in Units (seconds, frames or samples). The parameters are expressed in the Units found on the Common page. To set the  to be 100 samples long, Set Units to Samples, Single  Off and Start / End to 0 and 99.",
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      "name": "End Unit",
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      "description": "endunit -  - Select the units to use for this parameter, Samples, Frames, or Seconds.\n\n samples - frames - seconds -",
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      "description": "samples - frames - seconds -",
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      "name": "Sample Rate",
      "label": "Sample Rate",
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      "description": "rate - The sample rate of the channels, in samples per second.",
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      "label": "Extend Left",
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      "description": "left -  - The left extend conditions (before range).\n\n hold - Hold the current value of the channel. slope - Continue the slope before the start of the channel. cycle - Cycle the channel repeatedly. mirror - Cycle the channel repeatedly, mirroring every other cycle. default - Use the constant value specified in the Default Value parameter.",
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      "description": "hold - Hold the current value of the channel. slope - Continue the slope before the start of the channel. cycle - Cycle the channel repeatedly. mirror - Cycle the channel repeatedly, mirroring every other cycle. default - Use the constant value specified in the Default Value parameter.",
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      "description": "defval - The value used for the Default Value extend condition.",
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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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      "description": "scope - To determine which channels get affected, some CHOPs use a  string on the Common page.",
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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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