Michael Jurka
89 lines
2.2 KiB
Java
89 lines
2.2 KiB
Java
/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.gallery3d.exif;
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/**
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* The rational data type of EXIF tag. Contains a pair of longs representing the
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* numerator and denominator of a Rational number.
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*/
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public class Rational {
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private final long mNumerator;
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private final long mDenominator;
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/**
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* Create a Rational with a given numerator and denominator.
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*
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* @param nominator
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* @param denominator
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*/
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public Rational(long nominator, long denominator) {
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mNumerator = nominator;
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mDenominator = denominator;
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}
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/**
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* Create a copy of a Rational.
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*/
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public Rational(Rational r) {
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mNumerator = r.mNumerator;
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mDenominator = r.mDenominator;
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}
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/**
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* Gets the numerator of the rational.
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*/
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public long getNumerator() {
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return mNumerator;
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}
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/**
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* Gets the denominator of the rational
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*/
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public long getDenominator() {
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return mDenominator;
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}
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/**
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* Gets the rational value as type double. Will cause a divide-by-zero error
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* if the denominator is 0.
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*/
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public double toDouble() {
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return mNumerator / (double) mDenominator;
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}
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@Override
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public boolean equals(Object obj) {
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if (obj == null) {
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return false;
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}
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if (this == obj) {
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return true;
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}
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if (obj instanceof Rational) {
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Rational data = (Rational) obj;
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return mNumerator == data.mNumerator && mDenominator == data.mDenominator;
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}
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return false;
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}
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@Override
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public String toString() {
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return mNumerator + "/" + mDenominator;
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}
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}
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