-- | Unit definitions and conversions. module Graphics.PS.Unit (radians, mm_pt) where -- | Convert degrees to radians. radians :: (Floating a) => a -> a radians n = n / (360 / (2 * pi)) -- | Convert millimeters to PS points. mm_pt :: (Floating a) => a -> a mm_pt = (* 2.8346456664) {-- -- | Convert PS points to millimeters. pt_mm :: (Floating a) => a -> a pt_mm = (/ 2.8346456664) -- | Postscript makes a point exactly 1/72 of an inch. inch :: (Num a) => a -> a inch n = 72 * n -- | 1 cm = 0.393700787 inches cm :: (Floating a) => a -> a cm n = 28.346456664 * n twopi :: (Floating a) => a twopi = 2 * pi halfpi :: (Floating a) => a halfpi = pi / 2 degrees :: (Floating a) => a -> a degrees n = n * (360 / twopi) --}