Why does this not work? It complains that I need to initialize X and Y before I
call them in the macro Fracp, but since I am passing them as parameters to the
function Gridd this would obviously be inappropriate. I have also tried changing
the macro into another function, but that doesn't work either.


#declare thick=0.05;
#macro Fracp(A)
 A-floor(A)
#end
#declare Gridd = function( X, Y ) {
 #if ( Fracp(X)<thick | Fracp(X)>(1-thick) | Fracp(Y)<thick | Fracp(Y)>(1-thick)
)
   1
 #else
   0
#end
}


Cheers,
H.

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