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Image Pixel Color Conversion

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Corroder
Grandmaster Cheater Supreme

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Joined: 10 Apr 2015
Posts: 1667

Posted: Wed Sep 02, 2020 10:22 pm Post subject: Image Pixel Color Conversion

When use, example:

Code:

for i = 0, 10 do
x = img.Picture.Bitmap.Canvas.getPixel(i,0)
print(x)
end

it returns values as MS Access color code, like:

3878183
3680804
3680804
3680804
3615011
3680804
3878183
3943976
3746597
3812390
3878183

Now, how to convert that values to RGB values, using CE Lua script?.

In VB, I can use, example:

Code:

Color.FromArgb(_img.getPixel(i, _img.Height - 1).ToArgb))

Any solutions?
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Dark Byte
Site Admin

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Joined: 09 May 2003
Posts: 25296
Location: The netherlands

Posted: Thu Sep 03, 2020 12:52 am Post subject:

those are rgb colors (system colors are negative)

print using this

Code:

print(string.format('%.8x',x))

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Corroder
Grandmaster Cheater Supreme

Reputation: 75

Joined: 10 Apr 2015
Posts: 1667

Posted: Thu Sep 03, 2020 11:15 am Post subject:

Thanks DB, I try:

Code:

print(string.format('%.8x',x))

Those return hex color format?.
But how to port this as Lua script?

Code:

Color.FromArgb(_img.getPixel(i, _img.Height - 1).ToArgb))

I try:

Code:

function HEXtoRGB(hexArg)
hexArg = hexArg:gsub('#','')
if(string.len(hexArg) == 3) then
   return tonumber('0x'..hexArg:sub(1,1)) * 17, tonumber('0x'..hexArg:sub(2,2)) * 17, tonumber('0x'..hexArg:sub(3,3)) * 17
elseif(string.len(hexArg) == 6) then
   return tonumber('0x'..hexArg:sub(1,2)), tonumber('0x'..hexArg:sub(3,4)), tonumber('0x'..hexArg:sub(5,6))
else
   return 0, 0, 0
end
end

function RGBtoHEX(redArg, greenArg, blueArg)
return string.format('%.2x%.2x%.2x', redArg, greenArg, blueArg)
end

--- try to apply, example:

imgSource.setPixel(i + 1, j + 1, HEXtoRGB(RGBtoHEX(_img.getPixel(i, j))))

Get return error : "bad argument #3 to 'format' (number expected, got nil)"

[/code]
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Dark Byte
Site Admin

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Posted: Fri Sep 04, 2020 10:36 am Post subject:

blue=value & 0xff green=(value >> & 0xff red=(value >>16) & 0xff _________________ Do not ask me about online cheats. I don't know any and wont help finding them. Like my help? Join me on Patreon so i can keep helping

Corroder
Grandmaster Cheater Supreme

Reputation: 75

Joined: 10 Apr 2015
Posts: 1667

Posted: Fri Sep 04, 2020 10:53 am Post subject:

Dark Byte wrote:

blue=value & 0xff
green=(value >> Cool

& 0xff
red=(value >>16) & 0xff

Ok, thanks. I will try to apply those statements on the script.
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