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Diffstat (limited to 'src/main/java/org/apache/commons/math3/ml/clustering/DoublePoint.java')
-rw-r--r-- | src/main/java/org/apache/commons/math3/ml/clustering/DoublePoint.java | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/src/main/java/org/apache/commons/math3/ml/clustering/DoublePoint.java b/src/main/java/org/apache/commons/math3/ml/clustering/DoublePoint.java new file mode 100644 index 0000000..4fb31f7 --- /dev/null +++ b/src/main/java/org/apache/commons/math3/ml/clustering/DoublePoint.java @@ -0,0 +1,86 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.commons.math3.ml.clustering; + +import java.io.Serializable; +import java.util.Arrays; + +/** + * A simple implementation of {@link Clusterable} for points with double coordinates. + * @since 3.2 + */ +public class DoublePoint implements Clusterable, Serializable { + + /** Serializable version identifier. */ + private static final long serialVersionUID = 3946024775784901369L; + + /** Point coordinates. */ + private final double[] point; + + /** + * Build an instance wrapping an double array. + * <p> + * The wrapped array is referenced, it is <em>not</em> copied. + * + * @param point the n-dimensional point in double space + */ + public DoublePoint(final double[] point) { + this.point = point; + } + + /** + * Build an instance wrapping an integer array. + * <p> + * The wrapped array is copied to an internal double array. + * + * @param point the n-dimensional point in integer space + */ + public DoublePoint(final int[] point) { + this.point = new double[point.length]; + for ( int i = 0; i < point.length; i++) { + this.point[i] = point[i]; + } + } + + /** {@inheritDoc} */ + public double[] getPoint() { + return point; + } + + /** {@inheritDoc} */ + @Override + public boolean equals(final Object other) { + if (!(other instanceof DoublePoint)) { + return false; + } + return Arrays.equals(point, ((DoublePoint) other).point); + } + + /** {@inheritDoc} */ + @Override + public int hashCode() { + return Arrays.hashCode(point); + } + + /** {@inheritDoc} */ + @Override + public String toString() { + return Arrays.toString(point); + } + +} |