Here you can find the source of computeBarycenter(Map
static Point2D computeBarycenter(Map<Point2D, Double> values)
//package com.java2s; /*/*from w w w . ja v a 2 s .c o m*/ * Copyright (C) 2006-2011 by Olivier Chafik (http://ochafik.com) * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ import java.awt.geom.Point2D; import java.util.Map; public class Main { static Point2D computeBarycenter(Map<Point2D, Double> values) { double x = 0, y = 0; for (Map.Entry<Point2D, Double> e : values.entrySet()) { Point2D point = e.getKey(); double value = e.getValue(); x += value * point.getX(); y += value * point.getY(); } int size = values.size(); return new Point2D.Double(x / size, y / size); } }