Version: v0.10.5 (using KDE 3.5.1 Level "a" , SUSE 10.0 UNSUPPORTED) Compiler: Target: i586-suse-linux OS: Linux (i686) release 2.6.13-15.8-default The canvas isn't antialiased and therefore it's ugly.
I think that this one is a wish more than a real bug, as the drawing itself is quite fine. Anyway, Qt4 allows to paint antialiased, so this could be implemented with Qt4.
I tried pushing a fix for this[0] but the discussion around precision of drawings convinced me not to do so. I'd also want to point out that you can use Kig to construct your (aliased) figure and then export it to LaTeX or SVG and you will get a better quality for document production or whatnot. I'm closing this as WONTFIX but if anyone is still interested in this feature, this discussion can be reopened in the KDE-Edu mailing list. [0] https://git.reviewboard.kde.org/r/104584/