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  GEGL graph to fill a layer with a rotated pattern
Posted by: tmanni - 07-04-2019, 04:02 PM - Forum: Tutorials and tips - Replies (2)

Considere this 400x300 image:

   

The common way to do this in gimp is :
- create a 800x600 layer (double size compared to image canvas)
- fill it with Filters > Render > Pattern > Checkerboard
- use the unified transform tool to rotate and translate the layer
- crop the layer to the image size

Now with GEGL graph:
- create a 400x300 layer
- run Filters > Generic > GEGL graph and copy paste the text below in the pipeline field

Code:
checkerboard
 x=25
 y=25
 color1=maroon
 color2=silver

rotate
 degrees=45
 origin-x=200
 origin-y=150


Et voilà!

Note that the indentation is only for better visualisation, it is not needed, all can be writen in one line
Code:
checkerboard x=25 y=25 color1=maroon color2=silver rotate degrees=45 origin-x=200 origin-y=150

Another example:
   
Code:
color value=yellow

over
 aux=[

   grid
     x=64
     line-width=32
     line-height=0
     line-color=black

  rotate
     degrees=45
 ]

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  Eraser opacity set to 100 but it wont completely erase.
Posted by: ApexRex93 - 07-04-2019, 01:27 AM - Forum: General questions - Replies (1)

Same thing with smudge. Instead of actually smudging its just turning slightly gray more and more. Please help


DISREGARD.. I figured it out. It's the Dynamics. Should have had it set to Basic Simple



Attached Files Thumbnail(s)
   
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  Color differences jpeg and png
Posted by: DearDeparted - 07-03-2019, 06:45 PM - Forum: General questions - Replies (15)

I'm puzzled by the color difference between an exported jpeg (dull) and a png (bright) and hope someone can help me understand what is going on.

I'm maintaining a website and part of it is uploading images created from a (sRGB) psd file from the designer. I edit some text inside that psd and export it for uploading to the website.

The previously uploaded images from this psd by others are all png images (bright).

What I see happening is this:

  1. On my monitor I see the colors as they should be and like the images on the website
  2. Exporting the image in png is the same
  3. Exporting the image as jpeg quality 100 gives the same result as the png when viewed in a color managed image viewer like Geeqie, but dull in the default Linux Mint image viewer which has no color management
  4. Uploading the png is okay, same bright colors
  5. Uploading the jpeg gives dull colors.
I would expect the png and jpeg to be the same. All are simple sRGB images. So what am I missing here?

I'm using a Dell monitor and calibration via Spider 4.

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  Fonts taking forever to load
Posted by: Brem - 07-03-2019, 04:03 PM - Forum: General questions - Replies (3)

Hi, I just upgraded to Gimp 2.10.12 as I was having issues with a past version of gimp. Anyway, I'm currently having issues with fonts. When trying to edit an existing photo I have, that is currently under the .xcf format. I am unable to edit the text as it's stating that gimp is "Loading Fonts (This may take a while...)". When I click on the image to try and use the text option, it gives me an error message saying "Fonts are still loading" at the bottom of the page. 

This has been going on for maybe around 15-20 minutes now. Any way to know why it's taking so long to load? I don't have a ton of fonts and the last version of gimp I had never gave me this error ever.

Also quick edit, when restarting gimp and not accessing the photo, the text box still shows it's loading font. I tried steps from this site: https://superuser.com/questions/906847/g...iles-fonts but that didn't help either. I removed the font folders from gimp, but they come back when reloading gimp.

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  Adjustments & why the 2nd scroll bar
Posted by: DearDeparted - 07-03-2019, 03:50 AM - Forum: General questions - Replies (2)

   
Help, please. Thanks.

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Question User paintbrush input?
Posted by: nobl - 07-01-2019, 08:55 PM - Forum: Scripting questions - Replies (4)

Hi! I'm a beginner to scripting in Gimp (I'm using Python-Fu) and have a quick question to see if what I want to script is even possible. 

I want to be able to create my own selection technique that colors pixels based on a users paintbrush input. (The painted pixels would then be used to draw the segmentation.) I've done some digging in the PDB but have been getting stuck when it comes to obtaining this type of user input (I know you can pass in a paintbrush as a basic parameter but am not sure how you would be able to keep track of where a user has painted on an image). 

Does anyone 1) know if this is possible and 2) would be able to point me in the right direction if it is? Thank you so much. 

(I'm running Gimp 2.10 on Mac Mojave.)

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  Separating photo elements
Posted by: bcripps - 07-01-2019, 07:57 PM - Forum: General questions - Replies (6)

    Hi Gimps…
Been using Gimp for a couple of years and have a basic understanding of using Layer Masks. I’ve got a photo (see attachment), of a plane. I need to change the color of the plane, no problem. But I also need to tone down the orange in the background sky. Simply, I need to separate the plane from the sky so I can work on each separately and then merge the images.
I could probably come up with a way to do this but, as usual for me, I’d “over engineer” the process. A simple solution would be much appreciated.
Thanks in advance,
Bry

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  ofn-path-animation
Posted by: Ofnuts - 07-01-2019, 06:50 PM - Forum: Extending the GIMP - Replies (13)

   

(click for animation)

Available at the usual place.

Don't forget to read the doc (some important notes).

Enjoy.

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  Script/Plug-in a 32 or 64 bit?
Posted by: Pat625 - 06-30-2019, 11:21 PM - Forum: General questions - Replies (4)

Trying to update and organize two computers.  One is 32 bit and one is 64 bit.  Many plug-ins and scripts but have no way of knowing which they are until I try it out on a 32 bit and find out it will not work as it is a 64.  Is there any way of looking at the code to find something that lets you know which it is.  Also, add to that the problem that many will work on 2.8 Gimp but not the 2.10.  Is there any notation in the programs at all to let you know which it is?

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  Path animation
Posted by: Ofnuts - 06-30-2019, 10:28 PM - Forum: Gallery - Replies (3)

   
(click for animation)

Of course there is a script behind this. Been quite a fight, between the bugs and getting Gimp to process strokes in left-to-right order.

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