Re: metaobj and transparent colors with \MPcolor

["Eckhart Guthöhrlein" <eckhart.guthoehrlein@uni-bielefeld.de>]

On Fri, Jul 30, 2004 at 12:08:33PM +0200, Vit Zyka wrote:
> >Here is my current file, which just gives a white background in the box.
> >
> >\setupcolors[state=start]
> >\setupbackgrounds[page][background=color,backgroundcolor=red]
> >\definecolor[Transparent][r=0,g=1,b=1,t=0,a=normal]
> >\startreusableMPgraphic{test}
> >	input metaobj;
> >	color t; t:=\MPcolor{Transparent};
> >	setObjectDefaultOption("Box")("fillcolor")(t);
> >	newBox.test(btex Transparent? etex) "filled(true)";
> >	Obj(test).c=origin;
> >	drawObj(test);
> >\stopreusableMPgraphic
> >\starttext
> >	\reuseMPgraphic{test}
> >\stoptext
> 
> Sorry I still do not see your white box. Perhaps something is corrupted 
> in my context installation.
> 
> I had a quick look into mpobj source and I tried to remove default white 
> background, but I was not successful.

Me either.

> Vit Zyka
> 
> P.S. I played with raw MP code:
> 
> input metaobj;
> beginfig(1)
>   fill fullcircle scaled 1cm withcolor red;
> 	color t; t:=(1,1,0);
> 	%setObjectDefaultOption("Box")("fillcolor")(t);
> 	newBox.test("");
> 	Obj(test).c=origin;
> 	drawObj(test);
> endfig;
> 
> end.

Your color is not transparent, so it will work as expected: no white
box.

-- 
Eckhart