Opposite color function ?

[smashly]

Hi,

Thanks for stopping by to read.

I have one of those questions that is probably obvious.

Has anyone written a function in Autoit that can generate opposite colors?

eg; Supply a color and the function return it's opposite color.

I did do a forum search but I couldn't find what I needed.

TYIA for any advice or help.

Cheers

[UEZ]

You mean something like 0xFF - $color whereas $color is a value of RGB?

Br,

UEZ

[wakillon]

Like this ?

$_OppositeColor = BitXOR ( $_Color, 0xFFFFFF )

[smashly]

Hi,

Thanks you for taking the time to respond.

No I mean opposite color, like Black and White.

I wasn't any good at art or color wheels at school.

So I have no Idea of how to calculate an opposite color to the color I have.

The way I'll be using it is with Text on random colored backdrop.

I'd like the text readable, so If I can work out an opposite color to the random backdrop color then I can set my text to the opposite:)

Edit: Thank You wakillon, I can't believe I didn't see it.. doh

I've used BitXOR when creating Icon masks..lol

Cheers

Edited April 18, 2011 by smashly

[MvGulik]

  On 4/18/2011 at 8:34 AM, 'wakillon said:

Like this ?

$_OppositeColor = BitXOR ( $_Color, 0xFFFFFF )

mmm, technically your not only flipping the color(hue) here, but also the lightness component of a color. (OP no clear about that part though.)

[MvGulik]

  On 4/18/2011 at 8:45 AM, 'smashly said:

The way I'll be using it is with Text on random colored backdrop.

I'd like the text readable, so If I can work out an opposite color to the random backdrop color then I can set my text to the opposite:)

In that case you might like to handle/use your colors in a different way (color model) -> HSL/HSV/etc instead of RGB Edited April 18, 2011 by singularity

[wakillon]

And like this ?

$_Color = 0x000000
$_OppositeColor = '0x' & Hex ( BitXOR ( $_Color, 0xFFFFFF ), 6 )
ConsoleWrite ( "$_OppositeColor : " & $_OppositeColor & @Crlf )

[UEZ]

This one (the long way)?

MsgBox(0, "Test", ComplementaryColor(0x1144AA))

Func ComplementaryColor($iRGB) ;coded by UEZ 2011
    If $iRGB = "" Then Return SetError(1, 0, 0)
    $aRGB = StringRegExp(Hex($iRGB, 6), ".{2}", 3)
    If @error Then Return SetError(2, 0, 0)
    $aRGB[0] = 0xFF - ("0x" & $aRGB[0])
    $aRGB[1] = 0xFF - ("0x" & $aRGB[1])
    $aRGB[2] = 0xFF - ("0x" & $aRGB[2])
    Return Hex(0x10000 * $aRGB[0] + 0x100 * $aRGB[1] + $aRGB[2], 6)
EndFunc

Shortest way:

MsgBox(0, "Test", Hex(BitXOR(0x1144AA, 0xFFFFFF), 6))

Br,

UEZ

Edited April 18, 2011 by UEZ

[smashly]

Thank You all

I edited my last post due to I missed wakillon 1st post and it's exactly what I need.

Thanks singularity for the suggestion.

Thanks wakillon for waking me up ..lol

XOR I have used when doing icon masks and I can't believe I didn't think of it.

Cheers

[smashly]

Thank You UEZ, I missed your 2nd post, gunna give your func a go.. w00t.

Edited April 18, 2011 by smashly

[UEZ]

Well, my function does ComplementaryColor in 9 lines but as wakillon wrote one line is enough.

Br,

UEZ

[wakillon]

  On 4/18/2011 at 9:13 AM, 'UEZ said:

Well, my function does ComplementaryColor in 9 lines but as wakillon wrote one line is enough.

Br,

UEZ

To be fair, 3 lines are necessary !

MsgBox ( 0, "Test", _OppositeColor ( 0x000000 ) )

Func _OppositeColor ( $_Color )
    Return '0x' & Hex ( BitXOR ( $_Color, 0xFFFFFF ), 6 )
EndFunc ;==> _OppositeColor ( )