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 
  6  Copyright 2012 Stewart Hamilton-Arrandale.
  7  http://creativewax.co.uk
  8 
  9  Modified by Yannick Loriot.
 10  http://yannickloriot.com
 11 
 12  http://www.cocos2d-x.org
 13 
 14  Permission is hereby granted, free of charge, to any person obtaining a copy
 15  of this software and associated documentation files (the "Software"), to deal
 16  in the Software without restriction, including without limitation the rights
 17  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 18  copies of the Software, and to permit persons to whom the Software is
 19  furnished to do so, subject to the following conditions:
 20 
 21  The above copyright notice and this permission notice shall be included in
 22  all copies or substantial portions of the Software.
 23 
 24  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 25  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 26  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 27  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 28  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 29  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 30  THE SOFTWARE.
 31  ****************************************************************************/
 32 
 33 /**
 34  * An RGBA color class, its value present as percent
 35  * @param {Number} r
 36  * @param {Number} g
 37  * @param {Number} b
 38  * @param {Number} a
 39  * @constructor
 40  */
 41 cc.RGBA = function(r,g,b,a){
 42     this.r = r ;    // percent
 43     this.g = g ;    // percent
 44     this.b = b ;    // percent
 45     this.a = a ;    // percent
 46 };
 47 
 48 cc.HSV = function(h,s,v){
 49     this.h = h ;     // angle in degrees
 50     this.s = s ;     // percent
 51     this.v = v ;     // percent
 52 };
 53 
 54 cc.ControlUtils = {};
 55 
 56 cc.ControlUtils.addSpriteToTargetWithPosAndAnchor = function(spriteName,target,pos,anchor){
 57     var sprite =cc.Sprite.create("#" + spriteName);
 58 
 59     if (!sprite)
 60         return null;
 61 
 62     sprite.setPosition(pos);
 63     sprite.setAnchorPoint(anchor);
 64     target.addChild(sprite);
 65     return sprite;
 66 };
 67 
 68 cc.ControlUtils.HSVfromRGB = function(rgbaValue){
 69     var out = new cc.HSV();
 70     var min, max, delta;
 71 
 72     min = rgbaValue.r < rgbaValue.g ? rgbaValue.r : rgbaValue.g;
 73     min = min  < rgbaValue.b ? min  : rgbaValue.b;
 74 
 75     max = rgbaValue.r > rgbaValue.g ? rgbaValue.r : rgbaValue.g;
 76     max = max  > rgbaValue.b ? max  : rgbaValue.b;
 77 
 78     out.v = max;                                // v
 79     delta = max - min;
 80     if( max > 0.0 ){
 81         out.s = (delta / max);                  // s
 82     } else {
 83         // r = g = b = 0                        // s = 0, v is undefined
 84         out.s = 0.0;
 85         out.h = -1;                            // its now undefined (don't know if setting to NAN is a good idea)
 86         return out;
 87     }
 88 
 89     if( rgbaValue.r >= max ){                        // > is bogus, just keeps compilor happy
 90         out.h = ( rgbaValue.g - rgbaValue.b ) / delta;        // between yellow & magenta
 91     } else {
 92         if( rgbaValue.g >= max )
 93             out.h = 2.0 + ( rgbaValue.b - rgbaValue.r ) / delta;  // between cyan & yellow
 94         else
 95             out.h = 4.0 + ( rgbaValue.r - rgbaValue.g ) / delta;  // between magenta & cyan
 96     }
 97 
 98     out.h *= 60.0;                              // degrees
 99 
100     if( out.h < 0.0 )
101         out.h += 360.0;
102 
103     return out;
104 };
105 
106 cc.ControlUtils.RGBfromHSV = function(hsvValue){
107     var hh, p, q, t, ff;
108     var i;
109     var out = new cc.RGBA();
110     out.a = 1;
111 
112     if (hsvValue.s <= 0.0){ // < is bogus, just shuts up warnings
113 
114         if (!hsvValue.h){ // value.h == NAN
115             out.r = hsvValue.v;
116             out.g = hsvValue.v;
117             out.b = hsvValue.v;
118             return out;
119         }
120 
121         // error - should never happen
122         out.r = 0.0;
123         out.g = 0.0;
124         out.b = 0.0;
125         return out;
126     }
127 
128     hh = hsvValue.h;
129     if(hh >= 360.0)
130         hh = 0.0;
131     hh /= 60.0;
132 
133     i = 0 | hh;
134     ff = hh - i;
135     p = hsvValue.v * (1.0 - hsvValue.s);
136     q = hsvValue.v * (1.0 - (hsvValue.s * ff));
137     t = hsvValue.v * (1.0 - (hsvValue.s * (1.0 - ff)));
138 
139     switch(i) {
140         case 0:
141             out.r = hsvValue.v;
142             out.g = t;
143             out.b = p;
144             break;
145         case 1:
146             out.r = q;
147             out.g = hsvValue.v;
148             out.b = p;
149             break;
150         case 2:
151             out.r = p;
152             out.g = hsvValue.v;
153             out.b = t;
154             break;
155 
156         case 3:
157             out.r = p;
158             out.g = q;
159             out.b = hsvValue.v;
160             break;
161         case 4:
162             out.r = t;
163             out.g = p;
164             out.b = hsvValue.v;
165             break;
166         default:
167             out.r = hsvValue.v;
168             out.g = p;
169             out.b = q;
170             break;
171     }
172     return out;
173 };
174 
175 cc.ControlUtils.CCRectUnion = function(rect1, rect2){
176     return cc.rectUnion(rect1,rect2);
177 };