toNegative

Undocumented in source. Be warned that the author may not have intended to support it.
  1. auto toNegative(Range r, RGBColor color)
    toNegative
    (
    Range
    )
    (
    Range r
    ,
    RGBColor color = new RGBColor(255, 255, 255)
    )
    if ()
  2. auto toNegative(Surface surface, RGBColor color)

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