Allegro and color commands

This is a discussion on Allegro and color commands within the C++ Programming forums, part of the General Programming Boards category; I know how specify what color I want to set to a pixle in Allegro, but I was woundering, is ...

  1. #1
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    Question Allegro and color commands

    I know how specify what color I want to set to a pixle in Allegro, but I was woundering, is there a way to record what the color of specific pixle is?

    I use the command:

    color=makecol(red,green,blue);

    to set the color for a comand like:

    line(screen,x1,y1,x2,y2,color);

    what I want it do is either detect what 'red', 'green', and 'blue' of a specific pixle or 'color' of the pixle

    Thanks,
    Campsoup1988

    PS: if this is the wrong section for the question, I am sorry, and if you could move it to the correct section

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    Dosen't allegro have a getpixel function?

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    Quote Originally Posted by Quantum1024
    Dosen't allegro have a getpixel function?
    I dont know. what is the function?

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    You can find the getpixel function in the allegro docs
    http://www.talula.demon.co.uk/allegr.../alleg013.html
    Once you have the pixel value in a variable you can seperate it into it's componant colors by and'ing/bitshifts.

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    ok, but I want to know what the color of the pixle is already not how to change it

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