x-up

Vocabulary

game.models.collada.private

Class description

Right-handed 3D coordinate system where X is up.

Definition

IN: game.models.collada.private

SINGLETON: x-up

Methods

USING: game.models.collada.private kernel math sequences ;

M: x-up >y-up-axis!
    drop dup [
        [ 0 swap nth ] [ 1 swap nth neg ] [ 2 swap nth ] tri
        swapd
    ] [
        [ 2 swap set-nth ] [ 1 swap set-nth ] [ 0 swap set-nth ]
        tri
    ] bi ;