| export var epsilon = 1e-6; |
| export var epsilon2 = 1e-12; |
| export var pi = Math.PI; |
| export var halfPi = pi / 2; |
| export var quarterPi = pi / 4; |
| export var tau = pi * 2; |
|
|
| export var degrees = 180 / pi; |
| export var radians = pi / 180; |
|
|
| export var abs = Math.abs; |
| export var atan = Math.atan; |
| export var atan2 = Math.atan2; |
| export var cos = Math.cos; |
| export var ceil = Math.ceil; |
| export var exp = Math.exp; |
| export var floor = Math.floor; |
| export var hypot = Math.hypot; |
| export var log = Math.log; |
| export var pow = Math.pow; |
| export var sin = Math.sin; |
| export var sign = Math.sign || function(x) { return x > 0 ? 1 : x < 0 ? -1 : 0; }; |
| export var sqrt = Math.sqrt; |
| export var tan = Math.tan; |
|
|
| export function acos(x) { |
| return x > 1 ? 0 : x < -1 ? pi : Math.acos(x); |
| } |
|
|
| export function asin(x) { |
| return x > 1 ? halfPi : x < -1 ? -halfPi : Math.asin(x); |
| } |
|
|
| export function haversin(x) { |
| return (x = sin(x / 2)) * x; |
| } |
|
|
