Re: [Gimp-user] gimp-user-list Digest, Vol 103, Issue 1

[Paul St George]

Message: 1
Date: Tue, 31 Mar 2020 14:19:16 +0200
From: Paul St George
To:gimp-user-list@gnome.org
Subject: [Gimp-user] Converting TIFF files for use in Processing
Message-ID:<079473c1-a860-d130-e6e1-829e24124...@paulstgeorge.com>
Content-Type: text/plain; charset=utf-8; format=flowed

Hello,

I want to use .tiff files in Processing. I can load .tiff images into a
Processing sketch if the image has been made by Processing. I cannot
load other .tiff files. Does anyone know enough about both gimp and
Processing to help? There is clearly something in the metadata that I
need to discard or change.

Thanks,
Paul



--

Message: 2
Date: Tue, 31 Mar 2020 15:00:45 +0100
From: Ken Moffat
To:gimp-user-list@gnome.org
Subject: Re: [Gimp-user] Converting TIFF files for use in Processing
Message-ID:<20200331140045.GA8744@llamedos.localdomain>
Content-Type: text/plain; charset=utf-8

On Tue, Mar 31, 2020 at 02:19:16PM +0200, Paul St George wrote:

Hello,

I want to use .tiff files in Processing. I can load .tiff images into a
Processing sketch if the image has been made by Processing. I cannot load
other .tiff files. Does anyone know enough about both gimp and Processing to
help? There is clearly something in the metadata that I need to discard or
change.

Thanks,
Paul


'TIFF' has been described as 'Thousands of Incompatible File
Formats'.  I've seen warnings in gimp, in the past, when
opening tiffs created by a proprietary application (they were
created many years ago), but at least they opened.

An overview of the formats is at wikipedia.

Perhaps you could raise an issue athttps://github.com/processing  to
see if the requirements are documented anywhere ?

?en
-- When alle is ?ayed and all is done, ye must choo?e your faces 
wisely, for soon enouff ye will be playing with fyre." The Nice and 
Accurate Prophecies of Agnes Nutter, Prophecy 5004


Thanks Ken,
That was a very good suggestion. I found the relevant code at:
https://github.com/processing/processing/blob/master/core/src/processing/core/PImage.java#L3012

Now I just need to find someone who understands it! Any ideas?

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Re: [Gimp-user] Question to the Gradient tool

[Sascha Zosgornik via gimp-user-list]

It would of course be nice, to have an "Alpha to Transparent" option
directly inside the gradient tool. But quick-mask should seems to be
the best solution without this.
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Re: [Gimp-user] Question to the Gradient tool

[Ofnuts]

On 01/04/2020 06:00, Liam R E Quin wrote:

On Wed, 2020-04-01 at 04:22 +0200, Sascha Zosgornik via gimp-user-list
wrote:

Is there any way to do this quickly without going the long way of
creating a layer mask?

The upper layer must have an alpha channel (transparency).

Use rectangle select, feather the selection a lot (e.g. 500 pixels),
cut.


You can so the same with a gradient on the Quickmask. But then t gets
pretty close to using a layer mask


But the layer mask way is better because you can go back and change it.

ankh




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