InvertLightness
Returns a colour or pixmap lightness inverted.
Syntax
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InvertLightness(c)-
cis a colour
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InvertLightness(pm)-
pmis a pixmap
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Description
If c is a colour, then InvertLightness(c) returns the lightness-inverted colour of c. This is obtained by replacing the lightness with its complement, that is,
InvertValue(hsl(h, s, l)) = hsl(h, s, 1 − l).
If pm is a pixmap, then InvertLightness(pm) returns pm with every pixel lightness inverted as described above.
Examples
InvertLightness(ExampleData("Sally"))
