[metapost] intersectiontimes
Dan Luecking
luecking at uark.edu
Thu Oct 16 21:45:07 CEST 2008
At 04:45 PM 10/15/2008, Troy Henderson wrote:
>Try this:
>
>--- begin cut code ---
>
>path p,q,r;
>p:=fullcircle xscaled 72 yscaled 36;
>q:=fullcircle xscaled 36 yscaled 72;
>r:=p;
>draw p withcolor green;
>draw q withcolor red;
>for n=1 upto 4:
> (t[n],whatever) = r intersectiontimes q;
% in a general purpose macro one might want:
exitif t[n]<0;
> z[n] = point t[n] of r;
> r:= subpath (t[n]+epsilon,length r) of r;
> fill fullcircle scaled 2 shifted z[n] withcolor blue;
>endfor;
Dan
Daniel H. Luecking
Department of Mathematical Sciences
University of Arkansas
"Dubito ergo cogito, cogito ergo sum" --Descartes
More information about the metapost
mailing list