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Re: [GUG] Animating Layers

  • To: gug@xxxxxxxxxx
  • Subject: Re: [GUG] Animating Layers
  • From: Roy Schestowitz <r@xxxxxxxxxxxxxxx>
  • Date: Tue, 08 Nov 2005 16:29:49 +0000
  • Delivery-date: Tue, 08 Nov 2005 16:29:52 +0000
  • Envelope-to: s@schestowitz.com
  • In-reply-to: <ffce06340511080714i4723d8fcpa1a676266d004dbd@mail.gmail.com>
  • References: <200511081256.10719.gwidion@mpc.com.br> <ffce06340511080714i4723d8fcpa1a676266d004dbd@mail.gmail.com>
  • User-agent: Internet Messaging Program (IMP) H3 (4.0.3)
_____/ On Tue 08 Nov 2005 15:14:32 GMT, [The Digital Pioneer] wrote : \_____

On 11/8/05, Joao S. O. Bueno Calligaris <gwidion@xxxxxxxxxx> wrote:

On Tuesday 08 November 2005 07:43 am, rOn van Middendorp wrote:
> Hi all,
> With http://www.gimp.org/tutorials/Simple_Animations/ at hand I'm
> creating an animation. (vertical lines of chinese symbols,
> appearing from right to left) I've made several layers, containing
> parts of the total image, put them in right order and so far, so
> good. Animation is working.
> The problem arises, when I change the opacity of the layers to
> create a fade-in / fade-out effect. I duplicated the layer that I
> want to fade in, several times and changed their opacity to,
> layer01: 6.2
> layer01a: 22.2
> layer01b: 39.5
> layer01c: 32.1
> The animation is still working, but the opacity doesn't change on
> bit, so the expected fade-in effect is not happening.
> Any suggestions?
> Tia,
> rOn

Hi - currently GIMP animations are GIF only - (or maybe MNG). In the
former case, just one level of transparency is suported, and that is
total transparency. In the later you can get away with with various
levels of transparency, but I am not sure you would get the final
result you want.

The solution for your case is compositing the final frames before
saving then to an animation.

Thus, for each translucent layer, you have to create a new layer,
either with your background or with the frame you want to "show
through", and combine these two layers into a single one, with
opacity 100.0 (and displaying the final effect you want to see).


MNG? I'm not familiar with that format... What is it? It supports animation?

If you are designing for the /Web/, as your need for opacity may indicate, I suppose you ought to give up the fade-in (opacity) effect. MNG is not supported by Web browsers as far as I know, especially not if embedded in pages.

Alternatively,  you  could lay the object (text?) over solid colour  back-
ground,  in which case there is no need for transparency. If you design an
animation  that will form part of a desktop application, there is probably
not much you can do.


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