RGBGreyScale

ColourValue = RGBGreyScale(RgbColour)

Parameters:     RgbColour = The RGB colour value to convert

Returns:     ColourValue = The grey scale equivalent of the input colour value

The RGBGreyScale() function returns a RGB colour value converted to a grey scale equivalent. This is generally useful when you need to compute how bright a colour is. FACTS:      * A colour returned from RGBGreyScale will have all it's R,G,B channel levels et to the same value. So R channel level will equal B as would the G in turn will equal B. Mini Tutorial:       This example draws a random patch of dots, then repeats this process but this time coverting the dot colours to grey scales.          ; Seed the Random Number generator   Randomize 47    ; Draw 5000 random coloured dots ; within the the left hand section of ; the screen.   For lp =0 To 5000      DotC Rnd(100),Rnd(100),RndRGB()   Next       ; ReSeed the Random Number generator   Randomize 47    ; Draw the same set of dots, but this ; time in grey scale colours.   For lp =0 To 5000      DotC 200+Rnd(100),Rnd(100),RgbGreyScale(RndRGB())   Next    ; Show the Screen and wait for a key press   Sync   WaitKey

Related Info:	ARGB | RGB | RgbAlphaAdd | RgbAlphaAnd | RGBAlphaBlend | RgbAlphaMult | RgbAlphaOr | RgbAlphaSub | RgbAlphaXOr | RGBFade :

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