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  Help making a checkerboard
Posted by: cappin - 04-26-2018, 11:18 PM - Forum: General questions - Replies (16)

I'm making a checkerboard for a board game. Using the GEGL operation checkers. Trying to make it 11cm tall by 13cm wide. A total of 143cm cubes. This attachment is the best I can do but its one pixel off and zoomed out 33%.

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  XCF file compatibility intent
Posted by: ajax - 04-26-2018, 07:40 PM - Forum: General questions - Replies (1)

Now that GIMP V2.10 is getting close I'm curious about intended compatibility with the .xcf files produced by prior versions of GIMP.  In my case the prior versions are pretty much limited to Version 2.8.xx.  However, I suspect for some others the question may be more general.

More specifically, I've been saving the .xcf files associated with images that have been edited using GIMP with the idea that I could, if desired, resume the editing activity from where I'd previously ended up.  Some limited experimentation has shown that .xcf files created by GIMP 2.8 can be opened successfully by GIMP 2.10.  I have yet to find one that fails but I'm not naive enough to think that might not happen.  In the case of going the other way and trying to open .xcf files created by GIMP 2.10 with GIMP 2.8 it's been a mixed bag.  Sometimes it fails and sometimes it doesn't.  While I wouldn't expect backward compatibility it would be nice to have a way to figure out which version of GIMP created any particular file.  How can that be done?

My inclination is to think that I need to keep GIMP 2.8 around for a while even after GIMP 2.10 is considered stable.  However, the amount of rigor that might be appropriate for keeping track of which .xcf files were created with which version of GIMP depends to some extent on the design intention of the developers.  Since the file extension (i.e., .xcf) appears to remain the same it is natural to expect compatibility.  However, given the amount of new capability offered by GIMP 2.10 complete backward compatibility seems impossible although the intention could be that a .xcf file can at least be opened and that users are informed of compatibility issues.

Obviously this is a topic that one might expect to find covered in the User Manual which raises the question, "is there a 2.10 version?".  If not when might such become available?

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  How to save a text layer
Posted by: dalmon - 04-26-2018, 03:07 PM - Forum: General questions - Replies (2)

Hi! I am new to gimp and just started using it so I could add a website to the bottom right of my photos. I was able to figure this out but I couldn't seem to find a way to save just the text layer. I wanted to open the layer up on the photos from a file and just save rather than remake the text box and have to resize, font and color every time. Is this possible? Thanks in advance!

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  Feathering
Posted by: gimp-artist - 04-26-2018, 11:53 AM - Forum: General questions - Replies (1)

I selected an area with the rectangular selection tool. Then I checked the "feather edges" check box in the tool options. Adjusting the radius doesn't work.

I went to the select > feather... Then I adjusted the radius in the dialog. Then the feathering works.

Why isn't the first method working?

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  PNG export options
Posted by: gimp-artist - 04-26-2018, 08:40 AM - Forum: General questions - Replies (2)

I'm reading gimp Docs in gimp.org. There is an option called "Save background color" in exporting png file dialog. The Docs says like this.

If your image has many transparency levels, the Internet browsers that recognize only two levels, will use the background color of your
Toolbox instead. Internet Explorer up to version 6 did not use this information.

I tested with 3 layers of transparency. Then I chose the background color of the toolbox yellow. I saved it as png with the option, "Save background color", checked.

I opened the saved png file on firefox. However the opened png file doesn't show the background color, yellow. Why is that so?

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  Pure black n white with smooth curves
Posted by: ociebieda - 04-25-2018, 07:50 PM - Forum: General questions - Replies (5)

I am already using gimp for years, not professionally, but I know most basics.
I also already used google to find proper solution, but all tutorials are not exactly about what I need, so please do not send me links about simple black n white or greyscale conversions.

What I need is to convert colored image to almost pure black n white effect with smooth curves.
I am not talking about greyscale with "desaturate" or 2 color with "threshold".

Original image in lossless PNG.
It has various colors that I want to remove, not making them greyscale.
https://speedstar.itos.pl/gimp/gimp-original.png
[Image: gimp-original.png]

Method 1.
I use "threshold" with value 160, which is close to what I am looking for, but the problem is that it makes image pure 2 color, and all curves are not smooth, making no shades between black and white pixels (use pixel perfect zoom withot blurring filters if you are not sure what I am talking about).
https://speedstar.itos.pl/gimp/gimp-threshold_160.png
[Image: gimp-threshold_160.png]

Method 2.
I use "desaturate" with "average" setting, make duplicate and set layer mode to "dodge", which keeps smooth curves and nicely removes most filling colors, but there are grey fogs that can be noticed on chest, upper leg, and shoe.
https://speedstar.itos.pl/gimp/gimp-desa..._dodge.png
[Image: gimp-desaturate_average_layer_dodge.png]

Method 3.
I use "desaturate" with "average" setting, increase gamma (not brightness, because I do not want to touch black color) with "levels" with value 160, increase "contrast" to value 96 (127 makes image 2 color), but I am still getting grey fogs slightly on chest and noticeably on upper leg, and also some lines become too small.
https://speedstar.itos.pl/gimp/gimp-desa...ast_96.png
[Image: gimp-desaturate_average_levels_160_contrast_96.png]

Method 4.
I use "color to alpha" on all colors, make duplicate and set layer mode to "dodge", which seems to to have better effect than previous methods, but I am still getting grey fogs that can be noticed on chest, and if I use another duplicate and set layer mode to "dodge", then lines become too small.
https://speedstar.itos.pl/gimp/gimp-all_..._dodge.png
[Image: gimp-all_colors_alpha_layer_dodge.png]

Any ideas?
Thanks for any suggestions, and please, lets discuss it like intelligent adults, no useless comments, no childish behaviors.

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  JPEG Saving Options
Posted by: gimp-artist - 04-25-2018, 12:22 PM - Forum: General questions - Replies (2)

I'm reading the gimp Docs in gimp.org. I can't understand this part.

If the quality setting found in the original file are not better than your default quality settings, then the option "Use quality settings from original image" will be available but not enabled.

What does "the option is available but not enabled" mean?

Thanks for reading.

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  Gimp 2.10 and Mathmap
Posted by: rich2005 - 04-25-2018, 09:14 AM - Forum: Gimp 2.10 - Replies (1)

Looking at some of the new tweaks in Gimp 2.10 and a non-photographic filter, Filters -> Map -> Panorama-Projection. (It is in Gimp 2.8 as a GEGL operation, but who ever looks there). An additional option Inverse-Transform

The dialogue looks like this, with nice on-canvas updating. WYSIWYG

[Image: DtUfASY.jpg]


Why am I writing about this not-very-often-used filter? You might have, once upon a time, used a Gimp plugin MathMap to produce similar results. Will MathMap still work in Gimp 2.10? Yes but you might have to do a little gentle hacking to provide the necessary library files that MathMap requires.

This in a Kubuntu 18 VM and Gimp 2.10 from otto-kesselgulasch/gimp-edge. The mini-planet filter.

[Image: s3HrmnT.jpg]

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  Identifying a Font
Posted by: blgriffin83 - 04-23-2018, 02:18 PM - Forum: General questions - Replies (2)

I have a GIMP file that I created some time back. Fast forward to today, I am using a new computer which apparently doesn't have the font that I used in the design installed. When I open the GIMP file, the font is still applied within the design but it can't be edited and will not show the name of the font. Is there any way to identify the name of the font at this point?

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  How to Rotate Selection and Draw Shapes?
Posted by: TechnicGeek - 04-23-2018, 06:12 AM - Forum: General questions - Replies (2)

Hello,

2 questions here.

How to rotate selection, be it custom or rectangle or circular?

How to easily draw ready shapes, like rectangle and circle? I haven't found them in the toolbox.

Thanks.

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