But by pressing the 'Rotate' button it pixelizes the layer. The saddest thing is - GIMP can rotate my layer by 60 as I would like. So the problem is, when I rotate a Layer by say 60 degrees the following happens: When I click the 'rotate' button then the rotated layer gets very pixelized and blurry. Creating a new Layer (first button on Layers selection), and using the Image->Canvas Size option to enlarge the canvas so that the new layer is inside the image may fix the issue for you. Help needed - Rotating a layer makes it blurry. Zooming out might show you the "marching ants" of the resulting selection. If you anchor it it is "melted" back on the source layer, and you'd have to re-select the same pixels.Īs you mention that you are not "seeing" it, it might be the result of your transform ending up outside of the Canvas area, or having an empty-pixel selection to start with. If you intend to continue transforming or applying filters to the selected area, just promote it to a new layer - then just having that as the active layer will have that area selected. Both actions are asily reachable as buttons on the Layers dialog. rotate it by 45°, it becomes a 72*73px image, containing 5256 pixels, so 50x bigger.Floating selection are a thing in GIMP that can be puzzling - since the pixels have "changed place" from where they were, they are put in this "intermediate" state that is the floating layer.īasically you have two actions to take to continue editing: eithre anchor back your floating selection on the image, or promote it to a new layer. (*) Start with 100*1px image: it contains 100px. You also have an image that has become seriously blurry, because cumulating rotations is bad idea, which is perhaps why nobody really cares about this problem. Of course for smaller rotations the increase is smaller, but things are worse for a non-square image(*). So you double the number of pixels for each rotation, and after 8 rotations you have an image which is 256 times bigger in area (16x bigger on the side). So this image contains √2*√2=2 times more pixels that the initial image. I don't think it's a bug: when you rotate an image by 45%, the rectangle image that contains everything from the previous image has a side which is √2 larger than the initial image. Time to time after few confirmed rotations, just go to Menu > Layer > Layer to image size, and the rotating tool will reset its size, thus freeing memory or process and GIMP get back to its normal speedīUT you will loose everything outside the canvas A few simple rotations are available in a single click within the Image/Transform menu This method will apply the rotation to your entire image canvas. The rotating grig after 10 or 11 rotations from minus 12 000 pixels to plus 15 000 pixelsĪ quick work around (I did tried it and it works): Step 1: Open the Image menu from the GIMP menu bar, select the Transform submenu, and then choose the rotation angle and direction that you want. All keys can be individually assigned: File / Preferences / Interface / Hotkeys. Main Options of the Color Map Rotation filter. In this list you can see most important hotkeys for the GIMP under Linux (most of them work on Windows as well). This filter is found in the image window menu under Colors Map Rotate Colors. The rotating tool become insanely huge after 7 to 8 confirmed rotation (confirmed = when you click OK), never saw that (because I never rotate more than just few times)Īs a matter of fact the grid, increase proportionally after each confirmed rotation Colormap Rotation lets you exchange one color range to another range.
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