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Curve Method Example

Interactively select each curve and direction reference point used to create the new B-spline. Each original curve is then deleted.

$$
$$ Declarations
$$
    ENTITY/ENT(200),BC(200),P(200)
    L10:
    IDENT/'PICK CURVE'+ISTR(K),ENT,CNT,K,RESP
    JUMP/L10:,TERM:,,RESP
    L20:
    IDENT/'PICK DIR POINTS',P,RESP
$$
$$ B-spline Definition
$$
    BC=BCURVE/CURVE,ENT(1..K),ENDOF,P(1..K),DELETE,$
    IFERR,L10:
    TERM:HALT