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 Post subject: You click rotate. Nothing happens
PostPosted: Wed Aug 02, 2017 3:55 am  (#1) 
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Joined: Jul 31, 2017
Posts: 15
GIMP Version: 2.8.14
Operating System: Windows
GIMP Experience: New User

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List any ERROR messages you received:
None. Problem is that nothing happens



Hi, so I've finally cut out and moved a layer of a beret onto an image of a politician's head (thanks to all the help I got on Gimpchat).

Now I've rightclicked on the layer and I want to rotate it to my left (politician's right) to fit the head at a jaunty angle (rotate 1 screenshot). I think that will be about 25 degrees so I enter -0.25 and click "Rotate" (rotate 2 screenshot)

Nothing happens to the layer (rotate 3 screenshot)

I've followed all the instructions on the help pages. What am I doing wrong?


Attachments:
rotate 3.PNG
rotate 3.PNG [ 503.24 KiB | Viewed 692 times ]
rotate 2.PNG
rotate 2.PNG [ 501.87 KiB | Viewed 692 times ]
rotate 1.PNG
rotate 1.PNG [ 488.68 KiB | Viewed 692 times ]
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 Post subject: Re: You click rotate. Nothing happens
PostPosted: Wed Aug 02, 2017 4:16 am  (#2) 
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Joined: Dec 26, 2014
Posts: 174
Location: Cumbria
I have the same problem using gimp 2.8.22

The rotation doesn't work when I type numbers directly into the box, I have to set the angle by using the slider or the scroll wheel


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 Post subject: Re: You click rotate. Nothing happens
PostPosted: Wed Aug 02, 2017 4:40 am  (#3) 
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Joined: Sep 23, 2016
Posts: 123
Try a slightly different method.
Make sure beret layer is selected.
Select the Rotate tool.
Click on the beret layer. A grid appears over the beret layer
Drag one of the corner boxes of the grid with the mouse and drag to rotate.

For the rotate dialogue that you had:
Use 25 for 25 degrees, not 0.25. Maybe it is working, but the rotate amount is too small to notice.
If it doesn't work first time, use the slider, then type in a number again. That usually gets it to work.

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 Post subject: Re: You click rotate. Nothing happens
PostPosted: Wed Aug 02, 2017 4:42 am  (#4) 
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Joined: Apr 01, 2012
Posts: 4761
Location: In front of my computer
You may need to
1. make sure there are no other selections (Check that the place you got the hat from doesn't still have a selection)
2. As Steve said, move it your self until it reaches where you want it.

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 Post subject: Re: You click rotate. Nothing happens
PostPosted: Wed Aug 02, 2017 4:44 am  (#5) 
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Joined: Mar 04, 2011
Posts: 1176
@semperfi04

Quote:
... I think that will be about 25 degrees so I enter -0.25 and click "Rotate"


No it works in degrees, +ve is clockwise -ve is anti-clockwise.

Looking at your screenshots, you still have an active selection. Turn it off Select -> None before using rotate.

@Steve

Quote:
...The rotation doesn't work when I type numbers directly into the box


It should work but you do need to click the rotate button for the value to take effect.

It will get much better when Gimp 2.10 comes out with improved tools ;)

Image

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 Post subject: Re: You click rotate. Nothing happens
PostPosted: Wed Aug 02, 2017 4:50 am  (#6) 
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GimpChat Member

Joined: Jul 31, 2017
Posts: 15
Steve wrote:
I have the same problem using gimp 2.8.22

The rotation doesn't work when I type numbers directly into the box, I have to set the angle by using the slider or the scroll wheel


Thanks. I tried that. This is what happened (rotate 4). I'm baffled


Attachments:
rotate 4.PNG
rotate 4.PNG [ 489.3 KiB | Viewed 670 times ]
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 Post subject: Re: You click rotate. Nothing happens
PostPosted: Wed Aug 02, 2017 4:53 am  (#7) 
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GimpChat Member

Joined: Jul 31, 2017
Posts: 15
semperfi04 wrote:
Steve wrote:
I have the same problem using gimp 2.8.22

The rotation doesn't work when I type numbers directly into the box, I have to set the angle by using the slider or the scroll wheel


Thanks. I tried that. This is what happened (rotate 4). I'm baffled


It would appear that the outline of the layer which I cut out hasn't moved when I moved the layer. When I rotate, it rotates the outline of the layer (the tinselly dotted lines) but not the rest of the beret. I'm really confused why that would be. I didn't see anything in the help pages to explain this. I also don't understand what the benefit of the outline and the layer not moving together is. Why does Gimp do this?


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 Post subject: Re: You click rotate. Nothing happens
PostPosted: Wed Aug 02, 2017 5:19 am  (#8) 
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GimpChat Member
User avatar

Joined: May 10, 2013
Posts: 178
Location: Scandinavia
On Linux numerical input works perfectly both ways, from menu and by clicking with rotation tool on screen.
On windows I've had this bug too. If I remember right, by dragging first the slider and then using numerical input it should work. Or click the little down/up arrows on right side of the angle box, if you hold mouse button it accelerates.
There are also good other rotation tools, rotation from path by Stephen Geary is what I've been using.

Btw, I suggest changing cubic interpolation to Lanczos3 from preferences.


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 Post subject: Re: You click rotate. Nothing happens
PostPosted: Wed Aug 02, 2017 5:52 am  (#9) 
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GimpChat Member

Joined: Mar 04, 2011
Posts: 1176
semperfi04 wrote:
semperfi04 wrote:
Steve wrote:
I have the same problem using gimp 2.8.22

The rotation doesn't work when I type numbers directly into the box, I have to set the angle by using the slider or the scroll wheel


Thanks. I tried that. This is what happened (rotate 4). I'm baffled


It would appear that the outline of the layer which I cut out hasn't moved when I moved the layer. When I rotate, it rotates the outline of the layer (the tinselly dotted lines) but not the rest of the beret. I'm really confused why that would be. I didn't see anything in the help pages to explain this. I also don't understand what the benefit of the outline and the layer not moving together is. Why does Gimp do this?


Not Gimp, just beginner non-understanding. It happens to everyone.

Twice recommended to turn off the selection. Again turn off the selection.

A video demo This start to finish in 2 minutes 16 seconds. https://youtu.be/WNiMzRLvM2Y

edit: Looking at your screenshots you are really not helping yourself setting Gimp up that way. For one thing, you do need to show the layers dialogue.

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Last edited by rich2005 on Wed Aug 02, 2017 6:00 am, edited 1 time in total.

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 Post subject: Re: You click rotate. Nothing happens
PostPosted: Wed Aug 02, 2017 6:00 am  (#10) 
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GimpChat Member
User avatar

Joined: Dec 26, 2014
Posts: 174
Location: Cumbria
rich2005 wrote:
@semperfi04

Quote:
... I think that will be about 25 degrees so I enter -0.25 and click "Rotate"


No it works in degrees, +ve is clockwise -ve is anti-clockwise.

Looking at your screenshots, you still have an active selection. Turn it off Select -> None before using rotate.

@Steve
Quote:
...The rotation doesn't work when I type numbers directly into the box


It should work but you do need to click the rotate button for the value to take effect.


I do click the rotate button but nothing happens, though I have found if I type the angle directly into the box then click the scroll wheel up and down one notch it will then rotate the selection

When anything doesn't work in Gimp as I expect it to I know from experience that the error is 99.9% mine, and perhaps that is true here, but as I can work around it, it's not a problem, I have put it down to a quirk of Gimp


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