/******************************************************************************* * Breakout Cave Survey Visualizer * * Copyright (C) 2014 James Edwards * * jedwards8 at fastmail dot fm * * This program is free software; you can redistribute it and/or modify it under * the terms of the GNU General Public License as published by the Free Software * Foundation; either version 2 of the License, or (at your option) any later * version. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more * details. * * You should have received a copy of the GNU General Public License along with * this program; if not, write to the Free Software Foundation, Inc., 51 * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *******************************************************************************/ package org.andork.awt.anim; public abstract interface Animation { public default Animation also(Animation simultaneous) { return animTime -> { long myResult = animate(animTime); long simultaneousResult = simultaneous.animate(animTime); if (myResult > 0) { if (simultaneousResult > 0) { return Math.min(myResult, simultaneousResult); } return myResult; } return simultaneousResult; }; } /** * Advances the animation one frame. * * @return if a value less than zero is returned, {@link AnimationQueue} * will terminate this animation. Otherwise, it will attempt to call * {@link #animate()} again in that many milliseconds. */ public abstract long animate(long animTime); }