[JW Lua] Different results in RGP Lua/JW Lua with FCStemMod.HorizontalUpOffset, more

[Robert Patterson]

The JW Lua and pre-fix RGP Lua results are wrong for negative values. There
was an incorrect calculation for signed bit manipulation that is now fixed.

On Sat, Aug 20, 2022 at 9:18 AM Jan Angermüller <jan at angermueller.com>
wrote:

> You were right, Robert. It was RGP Lua on Finale 25, but it was not the
> last release, but the version from May (0.62 or 0.61?).
> With the 0.63 release from July Fin25, 26, 27 all return -3 with RGP Lua,
> while JW Lua still returns -125.
> So it's different than in JW Lua, but at least consistent.
>
> Jan
>
> Am 19.08.2022 um 13:51 schrieb Robert Patterson:
>
> Please confirm that your Finale 25 setup is actually using RGP Lua. I have
> run tests here and my script exhibits the problem (for all Finale versions)
> with JW Lua, but it does not exhibit the problem for any version of Finale
> with RGP Lua.
>
> Furthermore, the code is exactly the same for Finale 25 as for 26/7. (The
> bug fix was in PDK Framework code, not Finale.) All this leads me to think
> your F25 menu item hooked up to JW Lua rather than RGP Lua.
>
> On Fri, Aug 19, 2022 at 5:07 AM Jan Angermüller <jan at angermueller.com>
> wrote:
>
>> We should think about a fix:
>> I have just noticed that RGP Lua in Finale 25 returns -125 and only in
>> Finale 26/27 returns -3.
>> JW Lua returns -125 in all Finale versions.
>>
>> Jan
>>
>>
>> Am 19.08.2022 um 12:00 schrieb Jan Angermüller:
>>
>> Hi Robert et al.,
>>
>> I noticed an undocumented difference in RGP Lua/JW Lua.
>>
>> FCStemMod.HorizontalUpOffset returns wrong values in JW Lua (signed byte
>> problem) and RGP Lua returns the correct values.
>> It might have be fixed automaticaly because of a fix in the Fin26+ PDK.
>> We (Robert and I) had talked about FCStemMod issues some time ago and I
>> wrote that I assume that there must have been some changes as another
>> FCStemMod problem didn't occur anymore in Fin64bit either.
>>
>> Test script which works with the attached file:
>>
>> if finenv.IsRGPLua then require('mobdebug').start() end
>> local region=finale.FCMusicRegion()
>> region:SetFullDocument()
>> for entry in eachentry(region) do
>>     if entry and entry.StemDetailFlag then
>>         local stemmod=finale.FCStemMod()
>>         stemmod:SetNoteEntry(entry)
>>         if stemmod:LoadFirst() then
>>            print(stemmod.HorizontalUpOffset)     --probably the same with
>> HorizontalDownOffset
>>         end
>>     end
>> end
>>
>> In Finale 27 JW Lua returns: -125
>> In Finale 27 RGP Lua returns: -3 (which is correct)
>>
>> In JW Lua I used this correction function,  but it took quite some time
>> to find out, it wasn't necessary in RGP Lua anymore.
>>
>> function jalib_CorrectStemOffsetForJWLua(offset)
>>     if not finenv.IsRGPLua then
>>         if offset<0 then
>>             offset=-offset-128
>>         elseif offset>128 then
>>             offset=-(256-offset)
>>         end
>>     end
>>     return offset
>> end
>>
>> I don't know if it makes sense to correct this in RGP Lua  - maybe for
>> compatibility reasons?
>> But as it is already like it and it actually fixes something, I think we
>> should keep it and know that this leads to problems only in JW Lua.
>>
>> Jan
>>
>> _______________________________________________
>> JWLua mailing listJWLua at jwmusic.nuhttp://jwmusic.nu/mailman/listinfo/jwlua_jwmusic.nu
>>
>>
>> --
>> Jan Angermüller
>> Orchideenstieg 13
>> 22297 Hamburg
>> Tel. 040 - 28 94 84 82
>> Mobil 0173 - 99 33 904www.elbsound.studio
>>
>> _______________________________________________
>> JWLua mailing list
>> JWLua at jwmusic.nu
>> http://jwmusic.nu/mailman/listinfo/jwlua_jwmusic.nu
>>
>
> _______________________________________________
> JWLua mailing listJWLua at jwmusic.nuhttp://jwmusic.nu/mailman/listinfo/jwlua_jwmusic.nu
>
>
> --
> Jan Angermüller
> Orchideenstieg 13
> 22297 Hamburg
> Tel. 040 - 28 94 84 82
> Mobil 0173 - 99 33 904www.elbsound.studio
>
> _______________________________________________
> JWLua mailing list
> JWLua at jwmusic.nu
> http://jwmusic.nu/mailman/listinfo/jwlua_jwmusic.nu
>
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