Amiga.org

Amiga computer related discussion => Amiga Software Issues and Discussion => Topic started by: Ral-Clan on March 20, 2007, 07:14:20 PM

Title: Any way to tell HEX value of a colour in a bitmap?
Post by: Ral-Clan on March 20, 2007, 07:14:20 PM

I've been playing around with the excellent free program AUTOTRACE.  It's a program that converts bitmaps into vector drawings.  You can specify a colour to be transparent if you know its HEX value.  I can to this with black 000000 or white FFFFFF, but is there any program or other way to determine what the HEX value of a particular colour in a bitmap is (preferably an Amiga program).

Title: Re: Any way to tell HEX value of a colour in a bitmap?
Post by: SamuraiCrow on March 20, 2007, 08:22:39 PM

If you have a palette entry that uses 0-255 red, 0-255 green, and 0-255 blue, you just divide each number by 16, and set the hexadecimal digit based on that value:  0 through 9 stay the same, 10=a, 11=b, 12=c, 13=d, 14=e, and 15=f.  The remainder of the division process will be the next hex digit, and then you just put the red, green, and blue values together in that order and you've got your hex value.  Any Amiga paint program with a palette editor will be able to tell you the decimal values to convert to hex.

Title: Re: Any way to tell HEX value of a colour in a bitmap?
Post by: Ral-Clan on March 20, 2007, 08:25:56 PM

Oh thank you!

Title: Re: Any way to tell HEX value of a colour in a bitmap?
Post by: Brian on March 20, 2007, 08:47:22 PM

I use the PC program PaintShopPro 4.12, it let's you specify colors either in Numeric or Hex. :)

Title: Re: Any way to tell HEX value of a colour in a bitmap?
Post by: Ral-Clan on March 20, 2007, 09:03:55 PM

Thanks....I thought of using a PC paint program, but I'd like to keep things all on the Amiga to work more efficiently.

If anyone knows of an Amiga app that will automatically tell me a HEX value of a colour, I would really appreciate it.  Other than that, the manual method described above will get me through.

Title: Re: Any way to tell HEX value of a colour in a bitmap?
Post by: bigdan on March 20, 2007, 09:27:58 PM

Ral-clan : are you ImageFX or Fxpaint user ??

Title: Re: Any way to tell HEX value of a colour in a bitmap?
Post by: Ral-Clan on March 21, 2007, 02:15:50 PM

Hi, I do use ImageFX quite a bit.  Is there some way to tell HEX numbers from it?  Of course I have DPaint installed as well.