POV-Ray : Newsgroups : povray.animations : alpha channel in animations : Re: alpha channel in animations Server Time
6 Oct 2024 08:59:13 EDT (-0400)
  Re: alpha channel in animations  
From: Warp
Date: 4 Mar 2003 12:10:19
Message: <3e64ddfa@news.povray.org>
Andrew Coppin <orp### [at] btinternetcom> wrote:
> You've never heard of a transparent GIF??? OK, it only supports 1-bit alpha
> (i.e., transparency = 100% or 0%, not in between). But you can animate it.

  GIF does not support an alpha channel.

  You can define that one of the colors is (completely) transparent, but
that's not an alpha channel. An alpha channel means that every color,
besides having red, green and blue values, also has a fourth component,
the transparency (ie. alpha) value. That is, colors have four components
instead of three.

> Wasn't really a "serious" suggestion ;-)

  I know. I just wanted to clear any misconceptions that might arise.

-- 
#macro N(D)#if(D>99)cylinder{M()#local D=div(D,104);M().5,2pigment{rgb M()}}
N(D)#end#end#macro M()<mod(D,13)-6mod(div(D,13)8)-3,10>#end blob{
N(11117333955)N(4254934330)N(3900569407)N(7382340)N(3358)N(970)}//  - Warp -


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