01 
02 /*
03  *  JScripter Standard 1.0 - To Script In Java
04  *  Copyright (C) 2008-2011  J.J.Liu<jianjunliu@126.com> <http://www.jscripter.org>
05  *  
06  *  This program is free software: you can redistribute it and/or modify
07  *  it under the terms of the GNU Affero General Public License as published by
08  *  the Free Software Foundation, either version 3 of the License, or
09  *  (at your option) any later version.
10  *  
11  *  This program is distributed in the hope that it will be useful,
12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  *  GNU Affero General Public License for more details.
15  *  
16  *  You should have received a copy of the GNU Affero General Public License
17  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
18  */
19 
20 package jsx.motion.reg.cmp;
21 
22 import jsx.motion.Regular;
23 import jsx.motion.reg.Composite;
24 
25 /**
26  * <p>Defines a composite regular function with an existing regular function scaled.</p>
27  * 
28  * @author <a href="mailto:jianjunliu@126.com">J.J.Liu (Jianjun Liu)</a> at <a href="http://www.jscripter.org" target="_blank">http://www.jscripter.org</a>
29  */
30 public final class Zoom extends Composite
31 {
32     /**
33      * <p>A typical constructor to construct a composite regular function of this type.</p>
34      * @param r The regular function for constructing the composite one.
35      * @param scale The scale.
36      * @since 1.0
37      */
38     public Zoom(final Regular r, final double scale) {
39         super(new Regular() {
40             @Override
41             protected double function(double x) {
42                 return call(r, x / scale) * scale;
43             }
44         });
45     }
46 }