Faces from a mesh: Difference between revisions

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@@ Line 414: / Line 414: @@
 <lang zkl>fcn perimSame(p1, p2){
    if(p1.len() != p2.len()) return(False);
-   foreach p in (p1){ if(not p2.holds(p)) return(False) }
+   False == p1.filter1('wrap(p){ (not p2.holds(p)) })
-   True
 }
@@ Line 422: / Line 421: @@
    p,last := ( if(edges) edges.pop(0).copy() else T ), ( p and p[-1] or Void );
    while(edges){
-      foreach n, ij in ([0..].zip(edges)){
+      foreach i,j in (edges){
+         if     (i==last){ p.append( last=j ); edges.del(__iWalker.idx); break; }
-         i,j := ij;
-         if(i==last)     { p.append(j); last=j; edges.pop(n); break; }
+         else if(j==last){ p.append( last=i ); edges.del(__iWalker.idx); break; }
-         else if(j==last){ p.append(i); last=i; edges.pop(n); break; }
       }
       fallthrough{ return(">>>Error! Invalid edge format<<<") }
    }
-   p[0,-1]
+   p[0,-1]	// last element not part of result
 }</lang>
 <lang zkl>println("Perimeter format equality checks:");