https://bugs.kde.org/show_bug.cgi?id=512724
[email protected] changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |[email protected] --- Comment #1 from [email protected] --- Created attachment 187235 --> https://bugs.kde.org/attachment.cgi?id=187235&action=edit Comparison between transform variants and other programs. Since the original bug report doesn't mention it: this is about nearest-neighbor interpolation. It does look like Krita does things differently from other programs, whether that's intentional someone else will have to say. I've attached a comparison image of the following: 1. the source image, unscaled and unrotated. 2. Scaled to 500% and rotated 45° in Krita. Gives funky zig-zags as mentioned in the report. 3. Scaled to 500%, then applied the transform. Then cut and pasted the layer so that the transform tool would let me start a new transform. Then rotated 45°. Less funky result, still some jags though. 4. Manually using the distort mode to try and place the corners in the right places. Pretty tricky because the tool really fights you on this, so I didn't get it entirely correct, but if I did I think it would have given the correct result. So the distort tool is doing something different/better. 5. Is GIMP, using the unified transform tool. Looks as expected. 6. Is Drawpile, using the (only) transform tool. Basically looks the same as GIMP, slight differences probably because it clamps the points to whole pixel coordinates. This may be solvable without too much reworking, changing the intent of any tools or breaking expectations by just letting you rotate in distort mode. That's basically what GIMP's unified transform tool and Drawpile let you do and it's pretty useful to have in general. -- You are receiving this mail because: You are watching all bug changes.
