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
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+++ 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);
+    }
+
+}