[metapost] Re: all intersections between two paths

[Hans Hagen]

Larry Siebenmann wrote:
> On Sun, 16 Jan 2005 19:12:28 +0100 (CET)
> Boguslaw Jackowski wrote:
> 
>  > Below there is the definition of the `find_BB' procedure
>  > that finds lower left and upper right coordinates (xl_crd,
>  > yl_crd, xh_crd, and yh_crd, respectively) for a given set
>  > of curves.
> 
> Very nice indeed. The macros would make a fine addition to a MF 
> tools section on CTAN.
> 
> To serve the same need Laurence Finston wrote suggested
> Sun, 16 Jan 2005 17:53:50 +0100
> 
>  > How about (0, h) and (w, -d)
> 
> Can this be made into a *useful* alternative to Jacko's 
> MF marcos?
> 
> When writing macros common to MF and MP, is there
> a *conventional* way for macros to decide which of MF or MP
> is running?

boolean ThisIsMp ;

ThisIsMp := known miterlimit ;

message if ThisIsMp : "METAPOST" else : "METAFONT" fi ;

end .


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