Re: MetaFun questions

[Jens-Uwe Morawski <morawski@gmx.net>]

On Mon, 03 Mar 2003 22:10:27 +0100
Hans Hagen <pragma@wxs.nl> wrote:

> At 03:22 PM 2/28/2003 +0100, you wrote:
> 
> >\definecolor[sa][r=1,t=0.7,a=1]
> >\definecolor[ea][g=1,t=0.5,a=1]
> >
> >\definecolor[s][r=1]
> >\definecolor[e][g=1]
> >
> >\startMPgraphic
> >   path p ; p := unitsquare xscaled 5cm yscaled 5cm ;
> >   fill p shifted (4cm,4cm) withcolor .7white ;
> >   fill p shifted (-3cm,-3cm) withcolor .8white ;
> >
> >   linear_shade(p,0,\MPcolor{s},\MPcolor{e});
> >\stopMPgraphic
> >
> >\loadcurrentMPgraphic\placeMPgraphic
> 
> i'll have a look at it; i'm not even sure if transparent shades are 
> possible, since the shading vectors need color vectors (implementing 
> shading and transparency took me quite some time to figure out from the 
> fuzzy specs]

i had a look in the spec today and it seems that it is impossible since
transparency can only be applied to objects or groups but not to a color
vector. So, we need to wait until PDF1.X supports this. If somebody has
good connections to Adobe please ask for this very feature.

Jens

P.S. If somebody has access to Adobe Illustrator then i could help
     to know if it is possible there ;-)