1 /**
  2  Copyright (c) 2008-2010 Ricardo Quesada
  3  Copyright (c) 2011-2012 cocos2d-x.org
  4  Copyright (c) 2013-2014 Chukong Technologies Inc.
  5  Copyright (c) 2008, Luke Benstead.
  6  All rights reserved.
  7 
  8  Redistribution and use in source and binary forms, with or without modification,
  9  are permitted provided that the following conditions are met:
 10 
 11  Redistributions of source code must retain the above copyright notice,
 12  this list of conditions and the following disclaimer.
 13  Redistributions in binary form must reproduce the above copyright notice,
 14  this list of conditions and the following disclaimer in the documentation
 15  and/or other materials provided with the distribution.
 16 
 17  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 18  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 19  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 20  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 21  ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 22  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 23  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 24  ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 25  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 26  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 27  */
 28 
 29 /**
 30  * @ignore
 31  */
 32 cc.kmScalar = Number;
 33 
 34 cc.kmBool = Number;
 35 
 36 cc.kmEnum = Number;
 37 
 38 cc.KM_FALSE = 0;
 39 
 40 cc.KM_TRUE = 1;
 41 
 42 cc.kmPI = 3.141592;
 43 
 44 cc.kmPIOver180 = 0.017453;
 45 
 46 cc.kmPIUnder180 = 57.295779;
 47 
 48 cc.kmEpsilon = 1.0 / 64.0;
 49 
 50 /**
 51  * Returns the square of s (e.g. s*s)
 52  * @param {Number} s
 53  */
 54 cc.kmSQR = function(s){
 55     return s*s;
 56 };
 57 
 58 cc.kmDegreesToRadians = function(degrees){
 59     return degrees * cc.kmPIOver180;
 60 };
 61 
 62 cc.kmRadiansToDegrees = function(radians){
 63     return radians * cc.kmPIUnder180;
 64 };
 65 
 66 cc.kmMin = function(lhs,rhs){
 67     return (lhs < rhs)? lhs : rhs;
 68 };
 69 
 70 cc.kmMax = function(lhs,rhs){
 71     return (lhs > rhs)? lhs : rhs;
 72 };
 73 
 74 cc.kmAlmostEqual = function(lhs,rhs){
 75     return (lhs + cc.kmEpsilon > rhs && lhs - cc.kmEpsilon < rhs);
 76 };
 77