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Java > Open Source Codes > proguard > gui > splash > LinearDouble


1 /*
2  * ProGuard -- shrinking, optimization, obfuscation, and preverification
3  * of Java bytecode.
4  *
5  * Copyright (c) 2002-2007 Eric Lafortune (eric@graphics.cornell.edu)
6  *
7  * This program is free software; you can redistribute it and/or modify it
8  * under the terms of the GNU General Public License as published by the Free
9  * Software Foundation; either version 2 of the License, or (at your option)
10  * any later version.
11  *
12  * This program is distributed in the hope that it will be useful, but WITHOUT
13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15  * more details.
16  *
17  * You should have received a copy of the GNU General Public License along
18  * with this program; if not, write to the Free Software Foundation, Inc.,
19  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20  */
21 package proguard.gui.splash;
22
23 /**
24  * This VariableDouble varies linearly with respect to its Timing.
25  *
26  * @author Eric Lafortune
27  */
28 public class LinearDouble implements VariableDouble
29 {
30     private double fromValue;
31     private double toValue;
32     private Timing timing;
33
34
35     /**
36      * Creates a new LinearDouble.
37      * @param fromValue the value that corresponds to a timing of 0.
38      * @param toValue the value that corresponds to a timing of 1.
39      * @param timing the applied timing.
40      */
41     public LinearDouble(double fromValue, double toValue, Timing timing)
42     {
43         this.fromValue = fromValue;
44         this.toValue = toValue;
45         this.timing = timing;
46     }
47
48
49     // Implementation for VariableDouble.
50
51     public double getDouble(long time)
52     {
53         return fromValue + timing.getTiming(time) * (toValue - fromValue);
54     }
55 }
56
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