Renumber points so 



that point 

 2 becomes point 



Jl 



Remove poin 

 1 and 2 



J\ 



RODOve point: 

 and 1 



Remove point 

 -1 and 



Remove points 

 2 and 3 



Renumber points so 

 4 becomes point 



Figure D-3. Flow chart for main processing loop in SMOOTH (loop 1520). 



149 



