On Sunday 06 May 2007, Michael Merkel wrote:
> Bosse Arnholm wrote on 06.05.2007
>
> about <[PageStreamSupport] Transparant pictures> the following:
> > Hi,
> > I parently work on PGS 4.1.2.
> > I have an A4 document with a photografic picture covering the ful page
>; > and I wnat to have a transparant .gif-logo on top of that.
> > The logo is transparant but not when I've mounted it on the page.
> > If I apply a mask, parts of the .gif becomes transparant, but not all
> > of it.
> >
>; > Any hints?
>
> afaik pagestream does not support transparency in pictures. the only way to
> go is to use a mask. you can create the mask on your own by using the
> following approach, which usually works quite well:
>
> - create a b/w version of the logo. the transparens parts should be black
> - load that b/w version into bme and convert it to a vector drawing
> - use this vector drawing as mask in pagestream for your logo
>;
> i often do it that way.
Hi Michael, that's a good hint -- I didn't realize BME did that. Do you know
if PgS supports masking with a discontinuous drawing?
BTW: PgS *does* support transparency in ILBM. Not much use except to Amiga
users and it is one-bit, not alpha transparency, but it *can* do it. (No
application I'm aware of outside of some Amiga program -- and I don't even
remember which -- supports transparency in ILBM.)
Tim Doty
.
