if i define a path
q := (w0,w0)--(w0,ww0)--(w2,ww1)--(w3,ww2)--(w3,w0)--cycle ;
and then pass this path as a parameter to a function
test( q ) ;
then within that function i can step through the 'list of points'.
def test( expr a ) =
for i = 1 upto (length(a)-2):
dotlabel.bot ("" , (point i of a) );
endfor ;
enddef;
but how could i extract from each point the X and the Y value to
construct the lines like this.
for i = 1 upto (length(a)-2):
z1 = (point i of a) ;
draw (0,y1)--(100,y1) ;
endfor;
thanks!
% floris
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