|a| ( a -- det )

Vocabulary

math.affine-transforms

Inputs

a

an object

Outputs

det

an object

Definition

USING: accessors kernel math sequences ;

IN: math.affine-transforms

: |a| ( a -- det )
    [ [ x>> first ] [ y>> second ] bi * ]
    [ [ x>> second ] [ y>> first ] bi * ] bi - ;