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Floris van Manen wrote:
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;
xpart point i of a ; ypart point i of a ; Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------