toNegative

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

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