Module consts 

Common constants.

Constants

DOWN

(0, 1) — screen-space down (Y-down convention)

HALF_PI

π / 2

LEFT

(-1, 0)

ONE

(1, 1) normalized

PI

Useful approximation of π.

RIGHT

(1, 0)

TAU

2π

UP

(0, -1) — screen-space down (Y-down convention)

ZERO

(0, 0)