Re: volunteers to fix some minor bugs in the lua/tikz terminal?

[Christoph B. <us...@be...>]

Hi Ethan,

Am 02.09.2014 22:18, schrieb Ethan A Merritt:
>
> (1)
> The alpha channel in ARGB colors is ignored in term->set_color.
> The lua terminal does handle an alpha channel in other code paths,
> for instance in gfx.format_color, so clearly it must be possible.

I'm currently working on the ARGB part, which is already working.

I wasn't sure, how to handle properly the fill styles FS_OPAQUE and 
FS_SOLID with respect to the alpha value. Other terminals (checked qt 
and svg seem to use alpha values in both cases).

I can also have a look at the other points you raised.

Another problem I encountered with the lua/tikz terminal is your recent 
change of drawing the arrow shafts and the arrow heads separately, 
<http://gnuplot.cvs.sourceforge.net/viewvc/gnuplot/gnuplot/src/graphics.c?r1=1.462&r2=1.463>.
That doesn't work with the `tikzarrows` option, because the tikz-arrow 
routine doesn't support negative headstyle. It seems to be possible to 
draw only the arrow heads <http://tex.stackexchange.com/q/1260/33933>, 
but I'm not sure if this works properly.

Do you have any suggestions for this?

Best,
Christoph