POV-Ray : Newsgroups : povray.binaries.images : Using "transmit all" with an image map : Re: Using "transmit all" with an image map Server Time
3 Feb 2023 23:50:02 EST (-0500)
  Re: Using "transmit all" with an image map  
From: Dave Blandston
Date: 29 Dec 2022 18:05:00
Message: <web.63ae1c54eaa53b9ce22848419334df62@news.povray.org>
Le_Forgeron <jgr### [at] freefr> wrote:
> color mapped images are image with a palette, not true/direct color.
>
> For example, gif is always palette mapped, whereas jpeg is not.
> Png is variable: it could have a palette or not.
> ("indexed": there is a palette; grayscale & truecolor: no palette)
>
> This has nothing to do with transparency channel;
> Gif can have it, png too, but I have never seen jpeg with it.
>
> Alain suggested to not use "transmit all" for that picture, but to have
> the transparency directly from the picture. (without any modifier)
>




Using a paint program to adjust the transparency is what I'm currently doing to
achieve the result that I want but it's not a perfect solution because of the
number of images involved. I'm using the "transmit all" feature to animate some
elements of a website mockup animation that fade in and fade out, such as
buttons and pop-ups and such. Images that don't require different levels of
transparency work great and I can use "transmit all," and only one copy of the
image needs to be made. But images that require part of the image to be fully
transparent exhibit the problem in the image posted above, so I can't use
"transmit all" and I have to make many copies of the image with the varying
levels of transparency which is very tedious. That's why I was curious if there
was a better way so I just thought I'd ask. I should have a sample animation
ready to post soon that will make this more clear. It's a fun project.


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