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Diffstat (limited to 'src/org/unitConverter/unit/BaseUnit.java')
| -rwxr-xr-x | src/org/unitConverter/unit/BaseUnit.java | 168 |
1 files changed, 0 insertions, 168 deletions
diff --git a/src/org/unitConverter/unit/BaseUnit.java b/src/org/unitConverter/unit/BaseUnit.java deleted file mode 100755 index 67309cf..0000000 --- a/src/org/unitConverter/unit/BaseUnit.java +++ /dev/null @@ -1,168 +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 <https://www.gnu.org/licenses/>. - */ -package org.unitConverter.unit; - -import java.util.Objects; - -import org.unitConverter.dimension.StandardDimensions; -import org.unitConverter.dimension.UnitDimension; - -/** - * A unit that is the base for its dimension. It does not have to be for a base dimension, so units like the Newton and - * Joule are still base units. - * <p> - * {@code BaseUnit} does not have any public constructors or static factories. There are two ways to obtain - * {@code BaseUnit} instances. - * <ol> - * <li>The class {@link SI} in this package has constants for all of the SI base units. You can use these constants and - * multiply or divide them to get other units. For example: - * - * <pre> - * BaseUnit JOULE = SI.KILOGRAM.times(SI.METRE.toExponent(2)).dividedBy(SI.SECOND.toExponent(2)); - * </pre> - * - * </li> - * <li>You can also query a unit system for a base unit using a unit dimension. The previously mentioned {@link SI} - * class can do this for SI and SI-derived units (including imperial and USC), but if you want to use another system, - * this is the way to do it. {@link StandardDimensions} contains common unit dimensions that you can use for this. Here - * is an example: - * - * <pre> - * BaseUnit JOULE = SI.SI.getBaseUnit(StandardDimensions.ENERGY); - * </pre> - * - * </li> - * </ol> - * - * @author Adrien Hopkins - * @since 2018-12-23 - * @since v0.1.0 - */ -public final class BaseUnit extends LinearUnit { - /** - * Is this unit a full base (i.e. m, s, ... but not N, J, ...) - * - * @since 2019-01-15 - * @since v0.1.0 - */ - private final boolean isFullBase; - - /** - * Creates the {@code BaseUnit}. - * - * @param dimension - * dimension measured by unit - * @param system - * system that unit is a part of - * @param name - * name of unit - * @param symbol - * symbol of unit - * @since 2018-12-23 - * @since v0.1.0 - */ - BaseUnit(final UnitDimension dimension, final UnitSystem system) { - super(dimension, system, 1); - this.isFullBase = dimension.isBase(); - } - - /** - * Returns the quotient of this unit and another. - * <p> - * Two units can be divided if they are part of the same unit system. If {@code divisor} does not meet this - * condition, an {@code IllegalArgumentException} should be thrown. - * </p> - * - * @param divisor - * unit to divide by - * @return quotient of two units - * @throws IllegalArgumentException - * if {@code divisor} is not compatible for division as described above - * @throws NullPointerException - * if {@code divisor} is null - * @since 2018-12-22 - * @since v0.1.0 - */ - public BaseUnit dividedBy(final BaseUnit divisor) { - Objects.requireNonNull(divisor, "other must not be null."); - - // check that these units can be multiplied - if (!this.getSystem().equals(divisor.getSystem())) - throw new IllegalArgumentException( - String.format("Incompatible units for division \"%s\" and \"%s\".", this, divisor)); - - return new BaseUnit(this.getDimension().dividedBy(divisor.getDimension()), this.getSystem()); - } - - /** - * @return true if the unit is a "full base" unit like the metre or second. - * @since 2019-04-10 - * @since v0.2.0 - */ - public final boolean isFullBase() { - return this.isFullBase; - } - - /** - * Returns the product of this unit and another. - * <p> - * Two units can be multiplied if they are part of the same unit system. If {@code multiplier} does not meet this - * condition, an {@code IllegalArgumentException} should be thrown. - * </p> - * - * @param multiplier - * unit to multiply by - * @return product of two units - * @throws IllegalArgumentException - * if {@code multiplier} is not compatible for multiplication as described above - * @throws NullPointerException - * if {@code multiplier} is null - * @since 2018-12-22 - * @since v0.1.0 - */ - public BaseUnit times(final BaseUnit multiplier) { - Objects.requireNonNull(multiplier, "other must not be null"); - - // check that these units can be multiplied - if (!this.getSystem().equals(multiplier.getSystem())) - throw new IllegalArgumentException( - String.format("Incompatible units for multiplication \"%s\" and \"%s\".", this, multiplier)); - - // multiply the units - return new BaseUnit(this.getDimension().times(multiplier.getDimension()), this.getSystem()); - } - - /** - * Returns this unit, but to an exponent. - * - * @param exponent - * exponent - * @return result of exponentiation - * @since 2019-01-15 - * @since v0.1.0 - */ - @Override - public BaseUnit toExponent(final int exponent) { - return this.getSystem().getBaseUnit(this.getDimension().toExponent(exponent)); - } - - @Override - public String toString() { - return String.format("%s base unit of%s dimension %s", this.getSystem(), this.isFullBase ? " base" : "", - this.getDimension()); - } -} |