[metapost] Whether any metapost package could provide all kinds of arrows, just like arrows in MicroSoft Visio.?

[mylatex mylatex]

Dear everyone,


The arrow style in MetaPost is too simple. I have found a package named carrow,

but that uses TeX,  and does not meet my requires.

So, I wants to know whether any metapost package could provide all
kinds of arrows, just like arrows in MicroSoft Visio.

Thanks.

mylatex

2004