Hi,
I have some trouble using a gradient background (solid) with a
transparent element :
\startMPinclusions
def test_shade (expr a, b) =
pickup pencircle scaled 1mm ;
color ca ; ca := \MPcolor{a} ;
color cb ; cb := \MPcolor{b} ;
color cc ; cc := \MPcolor{c} ;
sh := define_linear_shade(origin
shifted(0cm,.5*\overlayheight),origin,ca,cb) ;
fill fullsquare xscaled \overlaywidth yscaled \overlayheight
withshade sh;
draw origin withcolor cc;
draw origin shifted(0cm,-.25*\overlayheight) withcolor cc;
enddef ;
\stopMPinclusions
\setupcolors[state=start]
\definecolor[a][r=.57254902,g=.784313725,b=.917647059]
\definecolor[b][white]
\definecolor[c][darkred]
\starttext
\defineoverlay[bgoverlay][\uniqueMPgraphic{bg_top_shade}]
\setupbackgrounds[page][background=bgoverlay]
\startuniqueMPgraphic{bg_top_shade}
test_shade(origin, origin shifted(0cm,1cm));
draw fullcircle scaled 10cm shifted (0cm,0.25*\overlayheight)
withcolor transparent(1,0.5,white) withpen pencircle scaled 2cm;
%%%%%%%% If you comment out the previous line the color rendering is
definitelly different...
\stopuniqueMPgraphic
\input knuth
\stoptext
I have searched the ML without success, any idea ?
Regards,
Renaud
