Cutoff Mask Source

Source Type ID: dynamic_asset_generator:mask/cutoff

Format:

{
    "type": "dynamic_asset_generator:mask/cutoff",
    "source": {   },
    "cutoff": 128, // optional, defaults to 128
    "channel": "alpha" // optional, defaults to "alpha"
}

Generates a mask which is solid everywhere the provided channel of the provided source is greater than the cutoff, and transparent otherwise. The channel may be one of red, green, blue, alpha, cielab_lightness, cielab_a, cielab_b, hsl_hue, hsl_lightness, hsl_saturation, hsv_hue, hsv_value, or hsv_saturation. The cutoff must be an integer between 0 and 255, inclusive.