Control Point

  Control Point – Basis Function Correspondence     Interpolation     `C(ξ)=sum_(i=1)^n{N_(i,2)(ξ)*X_i}`   `C(0)=sum_(i=1)^nN_(i,2)(0)*X_i`   `N_(1,2)(0)=1, N_(i,2)(0)=0,i=2,…,6`    so,   `C(0)=N_(1,2)(0)*X_1=X_1`      `C(3)=sum_(i=1)^nN_(i,2)(3)*X_i`   `N_(6,2)(3)=1`   `N_(i,2)(3)=0,i=1,…,5`    so,   `C(3)=N_(6,2)(3)*X_6=X_6`   `C(2)=sum_(i=1)^n{N_(i,2)(2)*X_i}`    `N_(4,2)(2)=1` as this is the only non-zero basis function across `ξ=2`   `N_(i,2)(2)=0, i!=4`    so,   `C(2)=N_(4,2)(2)*X_4=X_4`        Convex Hull B-SPLine…

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