1 /* 2 * Copyright (c) 2011, 2015, Oracle and/or its affiliates. 3 * All rights reserved. Use is subject to license terms. 4 * 5 * This file is available and licensed under the following license: 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * - Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * - Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the distribution. 16 * - Neither the name of Oracle Corporation nor the names of its 17 * contributors may be used to endorse or promote products derived 18 * from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 23 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 24 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 25 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 26 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 30 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 package com.javafx.experiments.utils3d.animation; 34 35 import javafx.util.Duration; 36 37 public class TickCalculation { 38 public static final int TICKS_PER_SECOND = 6000; 39 private static final double TICKS_PER_MILI = TICKS_PER_SECOND / 1000.0; 40 private static final double TICKS_PER_NANO = TICKS_PER_MILI * 1e-6; 41 42 private TickCalculation() {} 43 44 public static long add(long op1, long op2) { 45 assert (op1 >= 0); 46 47 if (op1 == Long.MAX_VALUE || op2 == Long.MAX_VALUE) { 48 return Long.MAX_VALUE; 49 } else if (op2 == Long.MIN_VALUE) { 50 return 0; 51 } 52 53 if (op2 >= 0) { 54 final long result = op1 + op2; 55 return (result < 0)? Long.MAX_VALUE : result; 56 } else { 57 return Math.max(0, op1 + op2); 58 } 59 60 } 61 62 public static long sub(long op1, long op2) { 63 assert (op1 >= 0); 64 65 if (op1 == Long.MAX_VALUE || op2 == Long.MIN_VALUE) { 66 return Long.MAX_VALUE; 67 } else if (op2 == Long.MAX_VALUE) { 68 return 0; 69 } 70 71 if (op2 >= 0) { 72 return Math.max(0, op1 - op2); 73 } else { 74 final long result = op1 - op2; 75 return result < 0 ? Long.MAX_VALUE : result; 76 } 77 78 } 79 80 public static long fromMillis(double millis) { 81 return Math.round(TICKS_PER_MILI * millis); 82 } 83 84 public static long fromNano(long nano) { 85 return Math.round(TICKS_PER_NANO * nano); 86 } 87 88 public static long fromDuration(Duration duration) { 89 return fromMillis(duration.toMillis()); 90 } 91 92 public static long fromDuration(Duration duration, double rate) { 93 return Math.round(TICKS_PER_MILI * duration.toMillis() / Math.abs(rate)); 94 } 95 96 public static Duration toDuration(long ticks) { 97 return Duration.millis(toMillis(ticks)); 98 } 99 100 public static double toMillis(long ticks) { 101 return ticks / TICKS_PER_MILI; 102 } 103 104 105 }