From b20cd4223b4ffc03e334627a82ca4eff9738912c Mon Sep 17 00:00:00 2001 From: Adrien Hopkins Date: Sat, 16 Mar 2019 14:55:07 -0400 Subject: Moved project to Maven. --- src/unitConverter/dimension/UnitDimension.java | 241 ------------------------- 1 file changed, 241 deletions(-) delete mode 100755 src/unitConverter/dimension/UnitDimension.java (limited to 'src/unitConverter/dimension/UnitDimension.java') diff --git a/src/unitConverter/dimension/UnitDimension.java b/src/unitConverter/dimension/UnitDimension.java deleted file mode 100755 index 40e5bbc..0000000 --- a/src/unitConverter/dimension/UnitDimension.java +++ /dev/null @@ -1,241 +0,0 @@ -/** - * Copyright (C) 2018 Adrien Hopkins - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU Affero General Public License as published by - * the Free Software Foundation, either version 3 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 Affero General Public License for more details. - * - * You should have received a copy of the GNU Affero General Public License - * along with this program. If not, see . - */ -package unitConverter.dimension; - -import java.util.ArrayList; -import java.util.HashMap; -import java.util.HashSet; -import java.util.List; -import java.util.Map; -import java.util.Objects; -import java.util.Set; - -/** - * An object that represents what a unit measures, like length, mass, area, energy, etc. - * - * @author Adrien Hopkins - * @since 2018-12-11 - * @since v0.1.0 - */ -public final class UnitDimension { - /** - * The unit dimension where every exponent is zero - * - * @since 2018-12-12 - * @since v0.1.0 - */ - public static final UnitDimension EMPTY = new UnitDimension(new HashMap<>()); - - /** - * Gets an UnitDimension that has 1 of a certain dimension and nothing else - * - * @param dimension - * dimension to get - * @return unit dimension - * @since 2018-12-11 - * @since v0.1.0 - */ - public static final UnitDimension getBase(final BaseDimension dimension) { - final Map map = new HashMap<>(); - map.put(dimension, 1); - return new UnitDimension(map); - } - - /** - * The base dimensions that make up this dimension. - * - * @since 2018-12-11 - * @since v0.1.0 - */ - final Map exponents; - - /** - * Creates the {@code UnitDimension}. - * - * @param exponents - * base dimensions that make up this dimension - * @since 2018-12-11 - * @since v0.1.0 - */ - private UnitDimension(final Map exponents) { - this.exponents = new HashMap<>(exponents); - } - - /** - * Divides this dimension by another - * - * @param other - * other dimension - * @return quotient of two dimensions - * @since 2018-12-11 - * @since v0.1.0 - */ - public UnitDimension dividedBy(final UnitDimension other) { - final Map map = new HashMap<>(this.exponents); - - for (final BaseDimension key : other.exponents.keySet()) { - if (map.containsKey(key)) { - // add the dimensions - map.put(key, map.get(key) - other.exponents.get(key)); - } else { - map.put(key, -other.exponents.get(key)); - } - } - return new UnitDimension(map); - } - - @Override - public boolean equals(final Object obj) { - if (this == obj) - return true; - if (obj == null) - return false; - if (!(obj instanceof UnitDimension)) - return false; - final UnitDimension other = (UnitDimension) obj; - - // anything with a value of 0 is equal to a nonexistent value - for (final BaseDimension b : this.getBaseSet()) { - if (this.exponents.get(b) != other.exponents.get(b)) - if (!(this.exponents.get(b) == 0 && !other.exponents.containsKey(b))) - return false; - } - for (final BaseDimension b : other.getBaseSet()) { - if (this.exponents.get(b) != other.exponents.get(b)) - if (!(other.exponents.get(b) == 0 && !this.exponents.containsKey(b))) - return false; - } - return true; - } - - /** - * @return a set of all of the base dimensions with non-zero exponents that make up this dimension. - * @since 2018-12-12 - * @since v0.1.0 - */ - public final Set getBaseSet() { - final Set dimensions = new HashSet<>(); - - // add all dimensions with a nonzero exponent - they shouldn't be there in the first place - for (final BaseDimension dimension : this.exponents.keySet()) { - if (!this.exponents.get(dimension).equals(0)) { - dimensions.add(dimension); - } - } - - return dimensions; - } - - /** - * Gets the exponent for a specific dimension. - * - * @param dimension - * dimension to check - * @return exponent for that dimension - * @since 2018-12-12 - * @since v0.1.0 - */ - public int getExponent(final BaseDimension dimension) { - return this.exponents.getOrDefault(dimension, 0); - } - - @Override - public int hashCode() { - return Objects.hash(this.exponents); - } - - /** - * @return true if this dimension is a base, i.e. it has one exponent of one and no other nonzero exponents - * @since 2019-01-15 - * @since v0.1.0 - */ - public boolean isBase() { - int oneCount = 0; - boolean twoOrMore = false; // has exponents of 2 or more - for (final BaseDimension b : this.getBaseSet()) { - if (this.exponents.get(b) == 1) { - oneCount++; - } else if (this.exponents.get(b) != 0) { - twoOrMore = true; - } - } - return (oneCount == 0 || oneCount == 1) && !twoOrMore; - } - - /** - * Multiplies this dimension by another - * - * @param other - * other dimension - * @return product of two dimensions - * @since 2018-12-11 - * @since v0.1.0 - */ - public UnitDimension times(final UnitDimension other) { - final Map map = new HashMap<>(this.exponents); - - for (final BaseDimension key : other.exponents.keySet()) { - if (map.containsKey(key)) { - // add the dimensions - map.put(key, map.get(key) + other.exponents.get(key)); - } else { - map.put(key, other.exponents.get(key)); - } - } - return new UnitDimension(map); - } - - /** - * Returns this dimension, but to an exponent - * - * @param exp - * exponent - * @return result of exponientation - * @since 2019-01-15 - * @since v0.1.0 - */ - public UnitDimension toExponent(final int exp) { - final Map map = new HashMap<>(this.exponents); - for (final BaseDimension key : this.exponents.keySet()) { - map.put(key, this.getExponent(key) * exp); - } - return new UnitDimension(map); - } - - @Override - public String toString() { - final List positiveStringComponents = new ArrayList<>(); - final List negativeStringComponents = new ArrayList<>(); - - // for each base dimension that makes up this dimension, add it and its exponent - for (final BaseDimension dimension : this.getBaseSet()) { - final int exponent = this.exponents.get(dimension); - if (exponent > 0) { - positiveStringComponents.add(String.format("%s^%d", dimension.getSymbol(), exponent)); - } else if (exponent < 0) { - negativeStringComponents.add(String.format("%s^%d", dimension.getSymbol(), -exponent)); - } - } - - final String positiveString = positiveStringComponents.isEmpty() ? "1" - : String.join(" ", positiveStringComponents); - final String negativeString = negativeStringComponents.isEmpty() ? "" - : " / " + String.join(" ", negativeStringComponents); - - return positiveString + negativeString; - } -} -- cgit v1.2.3