On 2011-05-18 Hans Hagen <[email protected]> wrote:

> On 18-5-2011 8:30, Marco wrote:
> 
> > % Error
> > % path p; p:=fullsquare scaled 5cm shifted (10cm, 0cm);
> > % fill p
> > %   withshading("linear", llcorner p, urcorner p)
> > %   withcolor \MPcolor{red-t} shadedinto \MPcolor{blue};
> 
> don't ask how, but the upcoming beta can handle it
> 
> \starttext
> […]

Thanks  a  lot. But  I'm  still  a  bit  lost in  all  the
new  commands. I  can't figure  out  how to  shade from  a
particular colour to transparent.

\starttext
\definecolor [trans-t] [t=1, a=normal]
\startMPpage

path p; p:=fullsquare scaled 5cm;
fill p withcolor \MPcolor{red};

% Works if background colour is known and uniform
path p; p:=fullsquare scaled 3cm;
fill p
  withshading("linear", llcorner p, urcorner p)
  withcolor \MPcolor{blue} shadedinto \MPcolor{red};

path p; p:=fullsquare scaled 5cm shifted (5cm, 0cm);
fill p withcolor \MPcolor{red};

% Shades to white
path p; p:=fullsquare scaled 3cm shifted (5cm, 0cm);
fill p
  withshading("linear", llcorner p, urcorner p)
  withfromshadecolor \MPcolor{blue} withtoshadecolor \MPcolor{trans-t};

\stopMPpage
\stoptext

Marco


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