This is the version I ended up with, seems to do exactly what I had in mind: \startuniqueMPgraphic{mpshadow} % BodyFontSize should be the current font size of/in the frame mw := BodyFontSize/3; ox := 3 ; % offset x oy := 2 ; % offset y bx := 1.7mw ; % bleed x (height of the shadow) by := 3mw ; % bleed y (width of the shadow) rx := 2mw ; % max. corner radius x ry := 1mw ; % max. corner radius y steps := 10 ; % number of shadow layers, 10 is a good value hue := 0.03 ; % 0.02 is a good value ycorr := 1mw ; % difference between overlay height and shadow height for step = 1 upto steps: part := (step-1)/steps; xstep := bx * part ; % current part of bleed ystep := by * part ; crx := (rx + rx*part)/2; % current radius cry := (ry + ry*part)/2; % points of the rounded rectangle xa := -xstep + ox; xb := -xstep + ox + crx; xc := xstep + ox - crx + \overlaywidth; xd := xstep + ox + \overlaywidth; ya := -ystep + ycorr + oy; yb := -ystep + ycorr + oy + cry; yc := ystep - ycorr + oy - cry + \overlayheight; yd := ystep - ycorr + oy + \overlayheight; fill (xb, ya)--- (xc, ya)... (xd, yb)--- (xd, yc)... (xc, yd)--- (xb, yd)... (xa, yc)--- (xa, yb)...cycle withcolor transparent(1, hue, black) ; endfor; setbounds currentpicture to OverlayBox ; \stopuniqueMPgraphic \defineoverlay[shadow][\useMPgraphic{mpshadow}] \setupexternalfigures[location=default] \starttext \startplacefigure [title={MyTitle.}] \externalfigure[mill] \stopplacefigure \blank[2em] \startplacefigure [title={MyTitle.}] \externalfigure[mill][background=shadow] \stopplacefigure \stoptext Op zo 11 mei 2025 om 15:18 schreef Wolfgang Schuster < wolfgang.schuster.lists@gmail.com>:
Am 10.05.2025 um 21:39 schrieb Jeroen:
Is there a way with metapost to get a slightly off-centered (upper- right) shadow around a figure?
This a simple version (the \setupexternalfigures line is needed to load the example image because it won't wotk with dummy graphics):
\startuseMPgraphic{shadow} fill OverlayBox shifted (EmWidth/2,EmWidth/2) withcolor "lightgray" ; setbounds currentpicture to OverlayBox ; \stopuseMPgraphic
\defineoverlay [shadow] [\useMPgraphic{shadow}]
\setupexternalfigures[location=default]
\starttext
\externalfigure[mill] \blank \externalfigure[mill][background=shadow]
\stoptext
Wolfgang
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