On Thu, 10 Dec 2020, Hans Hagen wrote:
dotlabel uses a pen to draw the dot, and I am not sure why it uses that rather than a path. Here is a (to me) simpler definition, where you can change the shape:
just look in the pdf ... in your case the dot is a n point path while otherwise it uses the default postscript pen (which is a dot)
Ah, that makes sense.
it surprised me that a math guru like you doesn't do this:
vardef dotlabel@#(expr s,z) text t_ = % draw textext("$\bullet$") scaled (1/2) shifted z ; % draw textext("$\blacktriangle$") scaled (1/4) shifted z ; draw textext("$\blacksquare$") scaled (1/4) shifted z ; label@#(s,z) t_ ; enddef ; \stopMPdefinitions
Ha! I know that you said this as a joke, but as someone who did try to use the old font-based picture environment in LaTeX back in the day, I would never try to use fonts for "drawing". Especially, math fonts, where every designer has a different idea of what the shape should look like. Aditya