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+--- Thread: Dear God please tell me if this is even possible. (/Thread-Dear-God-please-tell-me-if-this-is-even-possible)
Dear God please tell me if this is even possible. - malice936 - 10-16-2020
I have spent the last 6 HOURS trying to do one simple thing, transform a rectangular image into a right triangle without distorting the pixel placement vertically. I have used EVERY transform tool, looked through every filter, and for the life of me I cannot figure out how to do this. So PLEASE if anyone can tell me if this is possible, and if so how I can do it, it would be greatly appreciated.
RE: Dear God please tell me if this is even possible. - rich2005 - 10-16-2020
To me your desctiption "without distorting the pixel placement vertically" means this: https://i.imgur.com/fq2qCGq.jpg which is a simple (selection) crop, however I suspect that you want to compress all the vertical pixels into whatever space is available . Is that correct ?
RE: Dear God please tell me if this is even possible. - malice936 - 10-16-2020
(10-16-2020, 07:13 AM)rich2005 Wrote: To me your desctiption "without distorting the pixel placement vertically" means this: https://i.imgur.com/fq2qCGq.jpg which is a simple (selection) crop, however I suspect that you want to compress all the vertical pixels into whatever space is available . Is that correct ?
![[Image: mlUOCZb.png]](https://i.imgur.com/mlUOCZb.png)
Circled in red is what I don't want to happen. I want the pixels to be vertically locked. In this example I used the perspective tool, but I have attempted to use every other transform and distort tool to accomplish what I want.
To put it as plainly as I can I do not want the pixels to move up and down, I want them to compress left and right.
RE: Dear God please tell me if this is even possible. - denzjos - 10-16-2020
Is this what you want ?
[attachment=5074]
RE: Dear God please tell me if this is even possible. - malice936 - 10-16-2020
(10-16-2020, 09:37 AM)denzjos Wrote: Is this what you want ?
YES OMG YES, how did you do that cause the only method I found was to do it manually pixel by pixel
RE: Dear God please tell me if this is even possible. - denzjos - 10-17-2020
I also tried almost everything in gimp and also find no solution, so I tried to do this in Paint.net 4.2.13. I have a Shellout to this program in my gimp filter menu. I found that it is possible with (in the Paint.net menu): Effects/Distort/Quadrilateral Reshape. Just use the upper sliders. It could be possible that there is such a plugin for gimp, but I have no clue.
RE: Dear God please tell me if this is even possible. - rich2005 - 10-17-2020
Gave up (1) spliting into columns and scaling using scripts (2) the Gmic plugin cartesian deform (must be possible but I can not figure out the correct equations)
Not Gimp, ImageMagick, https://imagemagick.org/ and from this page https://im.snibgo.com/sh2sh.htm
Code:
magick in.png -fx "p{j==0?0:i*h/j,j}" out.pnggives this before / after
[attachment=5084]
It does require a trim along the diagonal.
RE: Dear God please tell me if this is even possible. - malice936 - 10-17-2020
(10-17-2020, 03:33 PM)rich2005 Wrote: Gave up (1) spliting into columns and scaling using scripts (2) the Gmic plugin cartesian deform (must be possible but I can not figure out the correct equations)
Not Gimp, ImageMagick, https://imagemagick.org/ and from this page https://im.snibgo.com/sh2sh.htm
Code:
magick in.png -fx "p{j==0?0:i*h/j,j}" out.png
gives this before / after
It does require a trim along the diagonal.
Thank you SO MUCH this has been driving me nuts for 2 days now. Now I can get back on track for the project I'm trying to finish.