I liked Krita and have been enjoying using it at home so I have just got my old mac book and a Cintiq tablet working so I can use it while on the road but a strange thing has been happening when I use the program.

Krita has been taking curved lines I draw and putting angles in there. If I carefully and slowly draw a circle then it’s reasonably smooth but the faster I draw a curve then the worse these angles are, so that if I am to sketch quickly free hand a snaking line or even just free hand writing then it gets ugly and full of strait lines and hard angles.

It’s a strange effect and it’s on all the pens as far as I can see.

Here is an example with the number one being the slowest and the number six the fastest, you can see it clearly on the numbers too. I'm not sure how to add an image here but this is the link: https://postimg.org/image/m32di8ww1/

It's so weird, and I can see it even in the slow careful lines now too, just not as obvious as the the faster ones.

So I’m kind of stuck out here now and I can’t use Krita till I can sort this out. I’m hoping this is just a setting or something I’ve done by accident. Any help would be appreciated.

It's not really a strange effect. For Windows and Linux, we've been fighting this issue a lot. The problem is that we don't get enough positions along the curve from the tablet driver, some get dropped for some reason. That makes it hard to figure out a smooth line. That's why on Windows and Linux we wrote our own tablet support code; for OSX we still use the code from our platform library.

I never really noticed myself, because in the first place I don't have an old macbook, but a 2015 macbook pro, which is much faster, and can keep up with the tablet better and in the second place because I seldom quickly draw circles. But I can confirm it. Here is the bug report: https://bugs.kde.org/show_bug.cgi?id=373676

Not strange?! It's an Early 2011 Macbook pro. I'm a little shocked. It's not a problem drawing circles, it's a problem drawing any curve. The angles are present on everything; they are more obvious on the quickly drawn curves but you’d have to develop a pretty painful style to sketch without them present. A raster based art program that can’t draw curves is of little use to anyone.

I'm pretty new to all this tablet stuff so excuse my ignorance but surely this is not all drawing programs? This is the Wacom tablet drivers your saying that rendered their own products useless for drawing?

I have distant memories of putting a bootcamp windows 7 on this Macbook back in 2013, maybe that’ll be powerful enough to draw circles…

If I go really slowly.

Maybe that's unfair, I'm just sad that I cant use Krita now for the next few months. Windows in Bootcamp didn't play well either and Photoshop works just fine with the drivers provided, nice normal lines, so it's back to that I guess

I think by "Not Strange", boud means that we are very aware of what is going on. It is a bug. We don't like it, but right now fixing that issue creates problems with other areas of the program such as the stabilizer. Fixing that will create complaints from people that use the stabilizer features. Until someone can spend more time researching a better fix, it will probably be this way for a bit.

I see, I cant say I really understand what stabilizers are but for me, as an artist who sketches his ideas first, this is not an annoying glitch or quirk that can be worked around, it's a fundamental failing of the tool that renders it unusable.
But. As pointed out earlier, I'm living in the past here with Mavericks and what ever drivers I could find on the Asian Wacom site that would stick so I'm not a fair representation of your current build by a long stretch, and I maybe have exasperated the problem somehow with this mix as I'm getting the feeling that what I'm looking at is a lot more sever than what you guys are thinking of.

Anyhow this is the last of my Apples and it's high time I retired it.

Credit to all of you for doing such a good job on Krita, for me it's been an almost perfect fit.

You probably experience it in a more severe way than I do, or than Beelzy, the other person who hacks on Krita for OSX does, because your hardware is older, your version of OSX is older. We've already said we're away of the problem and want to improve -- what more could we do?

I'm not sure I'm asking you to do anything. I think I was conceding it was an out of date, and probably unfair, criticism of the program at this point.

Had the same problem with Krita on my Surface Pro 3. And since my style of drawing uses circular objects as skeletons, this problem made me think krita was unusable. I found a small fix on this by downloading the 32-bit version rather than using the 64-bit. The only thing that's left "angly" is the pixels which can be fixed by increasing the resolution.

32 vs 64 bits really cannot make a difference. On my SP3, I don't have angles when drawing circles, but if that happens, one thing that can help is fiddling with the precision of a brush. The precision determines how many stamps are put down, and by default Krita uses a high precision. It's quite possible to turn that down without losing visible quality.

It went completely crazy on me in the end. I decided I could do the sketching in another program, Photoshop CS6 works fine on my Macbook, and import to Krita to do the Print tone shading. I set up 3 paint layers with solid color fills and 3 transparency masks then I took a large brush and with black masked out the color on each. Then I just used all my brushes as usual but with white and painted on the transparency mask.
There you go, 3 single color layers for my print designs. Each layer color adjustable to preview different color combinations. Worked for about 20 minuets then Krita went mad, layers appeared and disappeared, brush marks became full of of artifacts, the interface became buggy with parts magnifying, layers or groups of layers highlighting spontaneously or shuffling order. Tried reinstalling a few times and such, turning everything else off.

You say my Macbook's too old and it is old I guess, 2011, but everything else still seems to run fine. I pulled up the activity monitor and it didn't look like it was maxing out the CPU and it's got 16GB of ram installed. Maybe the GPU? But 3 single color layers, 1600 x 1200, 100 ppi, with a few circles and squiggles on them hardly feels like pushing the thing.

I like Krita but I'm having to concede defeat on this one till I get home onto the windows desktop at least. Something somewhere between the OS 10.9, the drivers, and Krita just dose not want to be of any use at all.

I have a new macmini with a wacom 24 cintiq pro and krita 4.2

I have major problems with angles in my curves. Is this supposed to be repaired in 4.2? (for mac)

In tablet testing mode in Krita I can draw nice circles without any problems at all and really fast, so it seems the data of the location of my styles is recorded. But in paint mode it is horrible. Anything I can do? In photoshop and painter it is no problem at all.

You are all doing a really nice job with krita, but for me it is unusable at the moment.

Please show a screenshot of the full krita screen, with the statusbar tool option docker and layer docker visible that also shows the problem.

https://my.pcloud.com/publink/show?code=XZqHMA7ZNam2HozT95m2EDPxHq8mYJRz09qX

A4, 300dpi, 8bit

That looks like your tablet is not recognized at all -- there is no sign of line variation, so there's no pressure recognized, and that's definitely not normal, especially not with a Wacom device. Have you used another version of Krita before?