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  compression/quality reduction filter?
Posted by: peanutluvr - 10-12-2017, 05:11 PM - Forum: General questions - Replies (2)

I have an image that has low quality as the result of jpg compression and/or other whatnot.

If I want to paste something else onto that image, what can I do to make the new stuff match the low quality of the bad image?

Is there some filter? Is there a particular pattern for those filters? An extension? An exporting trick?

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  black dots
Posted by: JustNo - 10-09-2017, 08:13 PM - Forum: General questions - Replies (3)

i really need some help, so I needed to blend a image to my main background it all went well until i had use the eraser to remove the parts i didn't need (the image isn't easy for me to just crop) basically when i went to remove the parts i didn't want as soon as i erased them wee/tiny black lines like [ - - - - ] appeared on the parts i tried to remove , any idea on how i can fix it. thanks.

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  Spooky Hal
Posted by: trandoductin - 10-09-2017, 04:23 PM - Forum: Watercooler - No Replies

I went and asked a question on https://webmasters.stackexchange.com/que...er-for-seo
It's my first time asking a question on that zone of stackexchange.
and before i post my question
this spooky screen came up:
   

For a split second, I was like "Ah, ofnuts is preventing me from posting" haahah

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  Can't use pencil, paintbrush, airbrush, but can use text and fill tools.
Posted by: Dr Gore - 10-09-2017, 03:25 PM - Forum: General questions - Replies (2)

Hello, my problems started when I opened a .png file into GIMP. I couldn't use tools like airbrush, pencil, or paintbrush. These also do not show the circle showing where they would be working. I can however use tools like text and the fill tool with seemingly no problem. I do have everything selected and I am drawing within the layer boundaries.

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  Anyone Else Having Unresponsive Issues
Posted by: dadada_486 - 10-07-2017, 10:26 PM - Forum: General questions - Replies (2)

Hello,

I am running Gimp on Mac OS Sierra. However, i'm having quite serios unresponsive issue. Its almost like a crash, where for example you try to export a photo and the buttons become unresponsive and you can do nothing but cancel the window. The only fix is to reload and hop it doesn't occur. Any fixes for this?

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  Noise filter now defaults to red but I want B&W
Posted by: Andyx5 - 10-07-2017, 07:57 PM - Forum: General questions - Replies (3)

Hello,

Just started using GIMP and am trying to get to grips with creating space images. To get my star field I am using the Noise filter but for some unfathomable reason, the 'stars' keep coming out red instead of white. I've tried every reset but nothing helps. I don't know why or how this happened. Can anyone help? I saw somebody with the same issue posted to the old forum in 2010 and a reply suggested using saturation = 0. This has not helped me.

Thanking you in advance.

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Exclamation Text Along Path Problem
Posted by: närmanär15år - 10-07-2017, 07:46 PM - Forum: General questions - Replies (6)

Hello!

I use GIMP 2.8 a lot and I really like curved text.
However, there is a problem, look at the O.

[Image: r9A9QFF.png]

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  Odd colours in GIMP 2.9.6
Posted by: pdev - 10-07-2017, 02:11 AM - Forum: General questions - Replies (5)

I've just installed GIMP 2.9.6 on my MacBook.

Can anyone please explain this odd behaviour in the Colour Picker dialog box?

ffffff is supposed to be white!

   

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  Alpha to selection issue
Posted by: sputnik - 10-06-2017, 06:25 PM - Forum: General questions - Replies (5)

Please help, not sure whats going on. Alpha to selection creates strange behaviour  Huh 

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  How to change a script to work with alpha channel?
Posted by: mholder - 10-06-2017, 03:17 PM - Forum: General questions - Replies (5)

There is a script called 'tile_shuffle.scm', and I want to edit it a little.

This script does not work with alpha channels.  Is there any way to edit it to shuffle tiles with alpha values?
 

Here's the script:

Code:
; tile_shuffle.scm
; by Rob Antonishen
; http://ffaat.pointclark.net

; Version 1.0 (20090118)

; Description
; Shuffles tiles of the image

; License:
;
; This program is free software; you can redistribute it and/or modify
; it under the terms of the GNU General Public License as published by
; the Free Software Foundation; either version 2 of the License, or
; (at your option) any later version.
;
; This program is distributed in the hope that it will be useful,
; but WITHOUT ANY WARRANTY; without even the implied warranty of
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
; GNU General Public License for more details.
;
; The GNU Public License is available at
; http://www.gnu.org/copyleft/gpl.html
(define (script-fu-tile_shuffle img inLayer inX inY)
(let* (
        (width (car (gimp-image-width img)))
        (height (car (gimp-image-height img)))
        (inX (min inX width))
        (inY (min inY height))        
        (xTiles (trunc (/ width inX)))
        (yTiles (trunc (/ height inY)))        
        (tile1 0)
        (newlayer 0)
        (x0 0)
        (y0 0)
        (x1 0)
        (y1 0)
        (counter 0)
        (swap 0)
        (temp 0)
        (tilelist (cons-array (* xTiles yTiles) 'double))
        (mode (car (gimp-layer-get-mode inLayer)))
        )

    (gimp-context-push)
    (gimp-image-undo-group-start img)
    ; set up progress bar
    (gimp-progress-set-text _"Shuffling Tiles")
    
    ;fill list
    (while (< counter (* xTiles yTiles))
    (begin
        (aset tilelist counter counter)
        (set! counter (+ counter 1))
    )
    )
    
    ;shuffle list
    (while (> counter 1)
    (begin
        (set! swap (rand counter))
        (set! counter (- counter 1))
        (set! temp (vector-ref tilelist counter))
        (aset tilelist counter (vector-ref tilelist swap))
        (aset tilelist swap temp)
    )
    )

    ;create a working layer
    (set! newlayer (car (gimp-layer-new-from-drawable inLayer img)))
    (gimp-image-add-layer img newlayer (car (gimp-image-get-layer-position img inLayer)))        
    (gimp-layer-set-mode newlayer NORMAL-MODE)

    ;cut and paste tiles based on the shuffled array
    (set! counter 0)
    (while (< counter  (* xTiles yTiles) )
    (begin
        (gimp-progress-update (/ counter (+ (* xTiles yTiles) (if (> (remainder width inX) 0) yTiles 0) (if (> (remainder height inY) 0) xTiles 0) )))  ;update progress bar
        (set! x0 (* (* (remainder counter xTiles)) inX))
        (set! y0 (* (trunc (/ counter xTiles)) inY))

        (set! x1 (* (* (remainder (vector-ref tilelist counter) xTiles)) inX))
        (set! y1 (* (trunc (/ (vector-ref tilelist counter) xTiles)) inY))
        
        (gimp-rect-select img x0 y0 inX inY CHANNEL-OP-REPLACE FALSE 0)
        (gimp-edit-copy inLayer)
        (set! tile1 (car (gimp-edit-paste newlayer FALSE)))

        (set! tile1 (car (gimp-drawable-transform-2d-default tile1 x0 y0 1 1 0 x1 y1 FALSE 0)))
        
        (set! counter (+ counter 1))
    )
    )    
    (gimp-floating-sel-anchor tile1)

    ;edge tiles
    (if (> (remainder width inX) 0)
    (begin
        (set! tilelist (cons-array yTiles 'double))
        (set! counter 0)
        ;fill list
        (while (< counter yTiles)
        (begin
            (aset tilelist counter counter)
            (set! counter (+ counter 1))
        )
        )

        ;shuffle list
        (while (> counter 1)
        (begin
            (set! swap (rand counter))
            (set! counter (- counter 1))
            (set! temp (vector-ref tilelist counter))
            (aset tilelist counter (vector-ref tilelist swap))
            (aset tilelist swap temp)
        )
        )

        ;vertical edge
        (set! x0 (* xTiles inX))
        (set! x1 (* xTiles inX))
        
        ;cut and paste tiles based on the shuffled array
        (set! counter 0)
        (while (< counter yTiles)
        (begin
            (gimp-progress-update (/ (+ counter (* xTiles yTiles)) (+ (* xTiles yTiles) (if (> (remainder width inX) 0) yTiles 0) (if (> (remainder height inY) 0) xTiles 0))))  ;update progress bar
            (set! y0 (* counter inY))
            (set! y1 (* (vector-ref tilelist counter) inY))
        
            (gimp-rect-select img x0 y0 (remainder width inX) inY CHANNEL-OP-REPLACE FALSE 0)
            (gimp-edit-copy inLayer)
            (set! tile1 (car (gimp-edit-paste newlayer FALSE)))

            (set! tile1 (car (gimp-drawable-transform-2d-default tile1 x0 y0 1 1 0 x1 y1 FALSE 0)))
        
            (set! counter (+ counter 1))
        )
        )
        (gimp-floating-sel-anchor tile1)
    )
    )

    ;edge tiles
    (if (> (remainder height inY) 0)
    (begin
        (set! tilelist (cons-array xTiles 'double))
        (set! counter 0)
        ;fill list
        (while (< counter xTiles)
        (begin
            (aset tilelist counter counter)
            (set! counter (+ counter 1))
        )
        )

        ;shuffle list
        (while (> counter 1)
        (begin
            (set! swap (rand counter))
            (set! counter (- counter 1))
            (set! temp (vector-ref tilelist counter))
            (aset tilelist counter (vector-ref tilelist swap))
            (aset tilelist swap temp)
        )
        )

        ;horizontal edge
        (set! y0 (* yTiles inY))
        (set! y1 (* yTiles inY))

        ;cut and paste tiles based on the shuffled array
        (set! counter 0)
        (while (< counter xTiles)
        (begin
            (gimp-progress-update (/ (+ counter (* xTiles yTiles) xTiles) (+ (* xTiles yTiles) (if (> (remainder width inX) 0) yTiles 0) (if (> (remainder height inY) 0) xTiles 0))))  ;update progress bar
            (set! x0 (* counter inX))
            (set! x1 (* (vector-ref tilelist counter) inX))
        
            (gimp-rect-select img x0 y0 inX (remainder height inY) CHANNEL-OP-REPLACE FALSE 0)
            (gimp-edit-copy inLayer)
            (set! tile1 (car (gimp-edit-paste newlayer FALSE)))

            (set! tile1 (car (gimp-drawable-transform-2d-default tile1 x0 y0 1 1 0 x1 y1 FALSE 0)))
        
            (set! counter (+ counter 1))
        )
        )
        (gimp-floating-sel-anchor tile1)
        
    )
    )

    (set! inLayer (car (gimp-image-merge-down img newlayer  EXPAND-AS-NECESSARY)))
    (gimp-layer-set-mode inLayer mode)
    
    (gimp-progress-end)
    (gimp-image-undo-group-end img)
    (gimp-displays-flush)
    (gimp-context-pop)
)
)


(script-fu-register "script-fu-tile_shuffle"
                    "<Image>/Filters/Distorts/_Tile Shuffle..."
                    "Shuffles image tiles"
                    "Rob Antonishen"
                    "Rob Antonishen"
                    "Jan 2009"
                    "RGB* GRAY*"
                    SF-IMAGE       "Image"         0
                    SF-DRAWABLE    "Drawable"      0
                    SF-ADJUSTMENT  "Tile X Size"          (list 100 4 1000 1 10 0 SF-SLIDER)
                    SF-ADJUSTMENT  "Tile Y Size"          (list 100 4 1000 1 10 0 SF-SLIDER)
                    )

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