Am 2010-06-30 um 22:47 schrieb Wolfgang Schuster:
You can change the boundingbox in the metapost graphic (the white
background was required
for the cow figure because it has a transparent background)
Thank you! I used an opaque picture for my tests.
I played a bit with different shapes, I like my rounded rectangle best:
\startuniqueMPgraphic{mpshadow}
ox := -7 ; % offset x
oy := -7 ; % offset y
bx := 5 ; % bleed x
by := 5 ; % bleed y
rx := 7 ; % corner radius x
ry := 7 ; % corner radius y
for dx = 0 upto 40:
dy := dx ;
xa := dx + ox - bx/2;
xb := \overlaywidth - dx + ox + bx/2;
ya := dy + oy - by/2;
yb := \overlayheight - dy + oy + by/2;
% % rectangle
% fill (xa,ya)--(xb,ya)--(xb,yb)--(xa,yb)--cycle
% withcolor transparent("normal", .04, black) ;
% rounded rectangle
fill (xa, ya + ry)---
(xa, yb - ry)..
(xa + rx, yb)---
(xb - rx, yb)..
(xb, yb - ry)---
(xb, ya + ry)..
(xb - rx, ya)---
(xa + rx, ya)..cycle
withcolor transparent("normal", .04, black) ;
% % super ellipse
% hx := xb / 2;
% hy := yb / 2;
% fill (xa + rx, ya + ry)...
% (xa, ya + hy)...
% (xa + rx, yb - ry)...
% (xa + hx, yb)...
% (xb - rx, yb - ry)...
% (xb, ya + hy)...
% (xb - rx, ya + ry)...
% (xa + hx, ya)...cycle
% withcolor transparent("normal", .04, black) ;
endfor;
setbounds currentpicture to OverlayBox ;
\stopuniqueMPgraphic
\defineoverlay[shadow][\useMPgraphic{mpshadow}]
\starttext
\rotate[rotation=12]{%
\externalfigure[koe][width=50mm,background=shadow]
}
\stoptext
Greetlings from Lake Constance!
Hraban
---
http://www.fiee.net/texnique/
http://wiki.contextgarden.net
https://www.cacert.org (I'm an assurer)
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