getRGB

**mortoneff** · 09-17-2009, 10:40 AM

Hello everyone.

I have been trying to find what

Java Code:

(clr & 0x00ff0000) >> 16

does when

Java Code:

 int clr = image.getRGB(x,y)

I know from Java Tutorials that getRGB "Returns an integer pixel in the default RGB color model (TYPE_INT_ARGB) and default sRGB colorspace", that "The bitwise & operator performs a bitwise AND operation" and that ">>" shifts a bit pattern to the right, but what exactly does this whole thing do in simple words? How does it return 255 which is the value of "R" ?

Any help would be valuable and appreciated...
I am strugling to find an answer on this...
Thank you.

**r035198x** · 09-17-2009, 11:06 AM

Do you know what 0x00ff0000 is?

**mortoneff** · 09-17-2009, 11:09 AM

is it a hexadecimal address or something?

**masijade** · 09-17-2009, 11:14 AM

Okay, so you say "The bitwise & operator performs a bitwise AND operation". Do you know what that means? Likewise with the shift?

If not, google out a few tutorials about "bitwise operators", regardless of the language, and read up on them.