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Index › Programming Questions & Help › Syntax Questions › String to hex

eskimoblood Senior Member Offline Posts: 341	String to hex Mar 8th, 2008, 10:15pm   I've got an string of an color value like this "40240F". How can I turn it in real hex value to use with color()?
	Andreas Köberle {eskimoblood}

JohnG Ex Member	Re: String to hex Reply #1 - Mar 8th, 2008, 10:46pm   int col=Integer.parseInt("40240F",16); should do what you want. You may have to set the alpha part as well, but I'm not sure.

eskimoblood Senior Member Offline Posts: 341	Re: String to hex Reply #2 - Mar 9th, 2008, 12:20am   Mhmm I've found this solution but as you supposed the alpha value is missing. How can I add it.
	Andreas Köberle {eskimoblood}

JohnG Ex Member	Re: String to hex Reply #3 - Mar 9th, 2008, 12:41am   You could simply do Integer.parseInt("FF"+"40240F",16); (the 40240F can be a String variable of course. Or you could add the alpha in after: Code: int i=Integer.parseInt("40240F",16); i&=0xFF000000;

fry YaBB Moderator Offline Posts: 2623 mass, usa	Re: String to hex Reply #4 - Mar 9th, 2008, 1:16am   http://processing.org/reference/unhex_.html

eskimoblood Senior Member Offline Posts: 341	Re: String to hex Reply #5 - Mar 9th, 2008, 7:38pm   Thanks John and Fry, the solution is Long.parseLong("FF"+color, 16) as in the unhex() method cause Integers are little bit to short.
	Andreas Köberle {eskimoblood}

fry YaBB Moderator Offline Posts: 2623 mass, usa	Re: String to hex Reply #6 - Mar 10th, 2008, 8:41am   no, that's not correct, just use unhex() with an int. Code: String s = "66FFCC"; // if you have six digits, you'll need to prefix with FF, // or the two digit hex value for the alpha color c = unhex("FF" + s); // prints FF66FFCC println(hex(c));

eskimoblood Senior Member Offline Posts: 341	Re: String to hex Reply #7 - Mar 10th, 2008, 11:42am   Sure, but if  I haven't the PApplet object ...
	Andreas Köberle {eskimoblood}

fry YaBB Moderator Offline Posts: 2623 mass, usa	Re: String to hex Reply #8 - Mar 10th, 2008, 6:58pm   eskimoblood wrote on Mar 10th, 2008, 11:42am: Sure, but if  I haven't the PApplet object ... then you use PApplet.unhex(). but now you're changing the question--how are you gonna use it with color() if you aren't working with a PApplet

eskimoblood Senior Member Offline Posts: 341	Re: String to hex Reply #9 - Mar 11th, 2008, 9:17am   Its a class which only converts the strings from a external source, but sure I can import processing.core to have PApplet there. I'm not  a programmer, so sometimes I'm not sure what's the right way to do something.
	Andreas Köberle {eskimoblood}