Created attachment 47488 [details]
patch for Splines.cxx against LO 18.104.22.168
In ODF 1.2  smoothing with splines is concretized. The spec now contains a detailed description, how this splines have to be calculated. The attached patches implement this algorithms. The patches are against LO22.214.171.124
This changes are large, therefore I'll attach the file itself too, so that reading is easier. The solution is tested on WinXp, but need exhaustive testing on other platforms, especially 64bit versions.
Created attachment 47489 [details]
patch for Splines.hxx against LO 126.96.36.199
Created attachment 47490 [details]
complete new Splines.cxx for better reading
Created attachment 47491 [details]
A collection of files with charts for testing.
I committed the two patches as commit http://cgit.freedesktop.org/libreoffice/calc/commit/?id=f18c69f3f40bf443b59bd006db220267ba5174d0 into LibreOffice master.
RC2 is bit by bit identical with release version, so separate items in the version picker are useless. Changes have been discussed with Michael Meeks.