var MATH_CONST = require('../const'); 
var RotateTo = function (currentAngle, targetAngle, lerp){ 
if (lerp === undefined) { 
lerp = 0.05; 
} 
if (currentAngle === targetAngle) { 
return currentAngle; 
} 
if (Math.abs(targetAngle - currentAngle) <= lerp || Math.abs(targetAngle - currentAngle) >= (MATH_CONST.PI2 - lerp)) { 
currentAngle = targetAngle; 
} 
 else { 
if (Math.abs(targetAngle - currentAngle) > Math.PI) { 
if (targetAngle < currentAngle) { 
targetAngle += MATH_CONST.PI2; 
} 
 else { 
targetAngle -= MATH_CONST.PI2; 
} 
} 
if (targetAngle > currentAngle) { 
currentAngle += lerp; 
} 
 else if (targetAngle < currentAngle) { 
currentAngle -= lerp; 
} 
} 
return currentAngle; 
} 
; 
module.exports = RotateTo;