1b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato/* 2b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * ProGuard -- shrinking, optimization, obfuscation, and preverification 3b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * of Java bytecode. 4b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 5b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Copyright (c) 2002-2009 Eric Lafortune (eric@graphics.cornell.edu) 6b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 7b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * This program is free software; you can redistribute it and/or modify it 8b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * under the terms of the GNU General Public License as published by the Free 9b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Software Foundation; either version 2 of the License, or (at your option) 10b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * any later version. 11b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 12b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * This program is distributed in the hope that it will be useful, but WITHOUT 13b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 15b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * more details. 16b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 17b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * You should have received a copy of the GNU General Public License along 18b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * with this program; if not, write to the Free Software Foundation, Inc., 19b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 21b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratopackage proguard.gui.splash; 22b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 23b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato/** 24b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * This Timing varies between 0 and 1, as a sine wave over time. 25b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 26b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @author Eric Lafortune 27b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 28b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratopublic class SineTiming implements Timing 29b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato{ 30b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato private final long period; 31b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato private final long phase; 32b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 33b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 34b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato /** 35b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Creates a new SineTiming. 36b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @param period the time period for a full cycle. 37b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @param phase the phase of the cycle, which is added to the actual time. 38b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 39b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public SineTiming(long period, long phase) 40b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 41b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato this.period = period; 42b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato this.phase = phase; 43b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 44b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 45b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 46b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Implementation for Timing. 47b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 48b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public double getTiming(long time) 49b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 50b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Compute the translated and scaled sine function. 51b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato return 0.5 + 0.5 * Math.sin(2.0 * Math.PI * (time + phase) / period); 52b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 53b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato} 54