n ( vs triple -- n )

Vocabulary

bunny.model

Inputs

vs	an object
triple	an object

Outputs

n

an object

Definition

USING: kernel math.vectors sequences ;

IN: bunny.model

: n ( vs triple -- n )
    swap [ nth ] curry map
    [ [ second ] [ first ] bi v- ] [ [ third ] [ first ] bi v- ]
    bi cross vneg normalize ;