Hi folks,
hoping someone who really understands Metapost can give me a suggestion
since I cannot find it in any manuals.
In Therion's Metapost, there are a couple of wildcard suffixed macros
like this:
vardef p_label@#(expr txt,pos,rot,mode)
I have a need to call the different ones depending on the value of a
pair like this:
if A = (-1,1):
p_label.ulft(thetext,P,R,style);
elseif A = (0,1):
p_label.top(thetext,P,R,style);
... more ...
Based on the value of another variable, I need to run a different macro
instead, which also has its own suffixes, which match the suffixes above:
if A = (-1,1):
if Foo = "a"
thelabel.ulft(txt, pos);
... other stuff ...
else:
p_label.ulft(thetext,P,R,style);
fi;
elseif A = (0,1):
if Foo = "b"
thelabel.ulft(txt, pos);
... other stuff ...
else:
p_label.top(thetext,P,R,style);
fi;
... more ...
This quickly gets tedious, since the same code gets repeated over and
over again, just with a different suffix each time.
In Metapost, is it possible to store the suffix in a variable, then use
it when calling the macro like so?
if A = (-1,1): sfx:="ulft";
elseif A = (0,1): sfx:="top";
...
if Foo = "b"
thelabel.<sfx>(txt, pos);
... other stuff ...
else:
p_label.<sfx>(thetext,P,R,style);
fi;
Thanks for any advice.
Tarquin
