Re: Png image files are always 859x1111

[Alexander Kobel]

Wilbert Berendsen wrote:
> You know you can have LilyPond transparent (alpha) PNGs directly by using
> -dpixmap-format=pngalpha on the commandline, like:
>
> lilypond -dresolution=300 -dpixmap-format=pngalpha --png file.ly
>
> or by including these lines in your template:
>
> #(ly:set-option 'pixmap-format "pngalpha")
> #(ly:set-option 'resolution 300)

Does not work for me here in neither way. Do I have to specify a special 
version of GS or something?

But anyway, even if it worked, I think to remember that the default GS 
pgnalpha backend only does "binary" transparency, not "gradual" 
transparency - which means that on antialiased boundarys of objects 
which softly turn into white you'll see white shadows, right?
The correct way - at least IMHO - is to leave the foreground color as 
black for all "drawn" pixels and only adjust the alpha channel to what 
was the gray value before.


Cheers,
Alexander