convert hex string into int r,g,b

Programming Questions

AudioVisu..

convert hex string into int r,g,b

in Programming Questions • 3 years ago

hello all, first post.

can someone please point me in the right direction for converting a hex color string into 3 int values r, g, b ?

unhex() will convert a hex to int, i just don't know how to convert this int into 3 discreet values for each color channel... or from the hex string directly into the 3 values.

*relp!*, thanks for reading

Replies(5)

PhiLho

Re: convert hex string into int r,g,b

3 years ago

Just split the string in three parts and use unhex on each?
You can use match() to do the split although it is a bit of an overkill... Or use hexString. substring() .
Although finally match() might be simpler to use, even if slightly less performant:

   String c = "AABBCC";
   String[] ha = match(c, "(..)(..)(..)");
   println("Found " + ha[1] + " "  + ha[2] + " "  + ha[3]);

(untested)

PhiLho

Re: Re: convert hex string into int r,g,b

3 years ago

Doh, talk about over-engineering...

The other solutions are much better.

mbraendle

Re: convert hex string into int r,g,b

3 years ago

There are the green(), red(), blue() functions in Processing to use after the unhex, but you could also use the right shift operator technique described there in the Processing Reference.

AudioVisu..

Re: Re: convert hex string into int r,g,b

3 years ago

thanks, right shift operator does it for me, seems like a clean enough solution.

kevin.bjo..

Re: convert hex string into int r,g,b

3 years ago

be cautious about colorMode() if you're using the built-in red() green() blue() functions, of course

kb, http://www.riftgame.com/