> -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf > Of Geoffrey > Sent: Wednesday, February 09, 2005 11:02 AM > To: [email protected] > Subject: Re: [Gimp-user] Re: missing pixels > > Olivier Ripoll wrote: > > > You misunderstood. A portion of the "value" (RGBA) of the pixel is > > selected, not a portion of the pixel geometry. Think of it like a > > phantom (ghost, whatever you call it): The shape of the > human body is > > totally preserved, but you can see through it. > > Still, I didn't know you could have a partially transparent > pixel. I thought transparency was at the pixel level, that > is either a pixel was transparent, or it was not. Then > again, I've a coder, not an artist or image expert. > No. RGB images have another channel - Alpha - that determines transparency. However, not many image formats use the alpha channel (PNG, TIFF, PSD, and XCF being the only ones I know of). GIF kinda uses it, but it does have that binary behavior you're talking about.
Greg _______________________________________________ Gimp-user mailing list [email protected] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
