{
  "id": "slope_top",
  "name": "Slope TOP",
  "displayName": "Slope TOP",
  "category": "TOP",
  "subcategory": "Filters",
  "version": "",
  "lastUpdated": "2025-08-07T07:50:09.599Z",
  "sourceFile": "C:\\Program Files\\Derivative\\TouchDesigner\\Samples\\Learn\\OfflineHelp\\https.docs.derivative.ca\\Slope_TOP.htm",
  "url": "",
  "description": "The Slope TOP generates pixels that represent the difference between its value and its neighbouring pixels' values. Given that default RGBA pixel values are between 0 and 1, the value of .5 means the neighbor's values are the same as the pixel's value. Values output in the red channel that are above .5 indicate the values are increasing left-to-right. Values output in the blue channel that are above .5 indicate the values are increasing bottom-to-top.",
  "summary": "The Slope TOP generates pixels that represent the difference between its value and its neighbouring pixels' values. Given that default RGBA pixel values are between 0 and 1, the value of .5 means the ",
  "details": "",
  "usage": "",
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      "description": "Select which method is used to calculate the slope of the Red channel.",
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      "description": "Select which method is used to calulate the slope of the Green channel.",
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      "id": null,
      "name": "Alpha",
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      "description": "Select which method is used to calculate the slope of the Alpha channel.",
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      "group": "General",
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      "description": "method -  - Determines what pixels to use when calculating the slope at each pixel in the image.\n\n prevcur - Uses the previous and current pixels for slope calculation. curnext - Uses the current and next pixels for slope calculation. prevnext - Uses the previous and next pixels for slope calculation.",
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      "description": "prevcur - Uses the previous and current pixels for slope calculation. curnext - Uses the current and next pixels for slope calculation. prevnext - Uses the previous and next pixels for slope calculation.",
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      "id": null,
      "name": "Zero Point",
      "label": "Zero Point",
      "group": "General",
      "page": "",
      "type": "float",
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      "description": "zeropoint - Sets the value to output when the slope is zero, similar to a midpoint. Default is .5 since 8-bit pxels are 0 to 1. But with Pixel Format et to 32-bit Float you should set this to 0, and look at the view in Normalized Split mode.",
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      "id": null,
      "name": "Strength",
      "label": "Strength",
      "group": "General",
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      "description": "strength - Set the strength of the output using this multiplier. Higher values result in higher slope values.",
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      "name": "Sample Step",
      "label": "Sample Step",
      "group": "General",
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      "description": "offset -  - When sampling the image, this determines the distance from each pixel to the sample pixel. When units are set to pixels, it is the number of pixels away from the current pixel which is sampled to find edges. A  of 3 would sample pixels 3 pixels away to look for edges.\n\noffset1 -offset2 -",
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      "name": "Sample Step Unit",
      "label": "Sample Step Unit",
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      "name": "Output Resolution",
      "label": "Output Resolution",
      "group": "General",
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      "type": "float",
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      "description": "outputresolution -  - quickly change the resolution of the 's data.\n\n useinput - Uses the input's resolution. eighth - Multiply the input's resolution by that amount. quarter - Multiply the input's resolution by that amount. half - Multiply the input's resolution by that amount. 2x - Multiply the input's resolution by that amount. 4x - Multiply the input's resolution by that amount. 8x - Multiply the input's resolution by that amount. fit - Fits the width and height to the resolution given below, while maintaining the aspect ratio. limit - The width and height are limited to the resolution given below. If one of the dimensions exceeds the given resolution, the width and height will be reduced to fit inside the given limits while maintaining the aspect ratio. custom - Enables the  parameter below, giving direct control over width and height.",
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      "description": "useinput - Uses the input's resolution. eighth - Multiply the input's resolution by that amount. quarter - Multiply the input's resolution by that amount. half - Multiply the input's resolution by that amount. 2x - Multiply the input's resolution by that amount. 4x - Multiply the input's resolution by that amount. 8x - Multiply the input's resolution by that amount. fit - Fits the width and height to the resolution given below, while maintaining the aspect ratio. limit - The width and height are limited to the resolution given below. If one of the dimensions exceeds the given resolution, the width and height will be reduced to fit inside the given limits while maintaining the aspect ratio. custom - Enables the  parameter below, giving direct control over width and height.",
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      "description": "resolution -  - Enabled only when the  parameter is set to Custom . Some Generators like Constant and Ramp do not use inputs and only use this field to determine their size. The drop down menu on the right provides some commonly used resolutions.\n\n resolutionw - resolutionh -",
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      "name": "Use Global Res Multiplier",
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      "description": "resmult - Uses the Global  Multiplier found in Edit>Preferences>TOPs. This multiplies all the TOPs resolutions by the set amount. This is handy when working on computers with different hardware specifications. If a project is designed on a desktop workstation with lots of graphics memory, a user on a laptop with only 64MB VRAM can set the Global  Multiplier to a value of half or quarter so it runs at an acceptable speed. By checking this checkbox on, this  is affected by the global multiplier.",
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      "description": "armenu - A drop-down menu with some commonly used aspect ratios.",
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      "name": "Input Smoothness",
      "label": "Input Smoothness",
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      "description": "inputfiltertype -  - This controls pixel filtering on the input image of the .\n\n nearest - Uses nearest pixel or accurate image representation. Images will look jaggy when viewing at any zoom level other than Native . linear - Uses linear filtering between pixels. This is how you get  images in viewers to look good at various zoom levels, especially useful when using any Fill Viewer setting other than Native . mipmap - Uses  mipmap filtering when scaling images. This can be used to reduce artifacts and sparkling in moving/scaling images that have lots of detail.",
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