kochanek-bartels-coefficients ( tension bias continuity -- s1 d1 s2 d2 )

Vocabulary

math.splines.private

Inputs

tension	an object
bias	an object
continuity	an object

Outputs

s1	an object
d1	an object
s2	an object
d2	an object

Definition

USING: kernel math ;

IN: math.splines.private

:: kochanek-bartels-coefficients
    ( tension bias continuity -- s1 d1 s2 d2 )
    1 tension - [
        1 bias +
        [ 1 continuity + * * 2 / ] [ 1 continuity - * * 2 / ]
        2bi
    ] [
        1 bias -
        [ 1 continuity - * * 2 / ] [ 1 continuity + * * 2 / ]
        2bi
    ] bi ;