Here you can find the source of te static double t(Point2D.Double original, Point2D.Double endpt1, Point2D.Double endpt2)
private static double t(Point2D.Double original, Point2D.Double endpt1, Point2D.Double endpt2)
//package com.java2s; /*//from www. java 2s. com * #%L * BlaiseMath * -- * Copyright (C) 2009 - 2015 Elisha Peterson * -- * Licensed 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. * #L% */ import java.awt.geom.Point2D; public class Main { private static double t(Point2D.Double original, Point2D.Double endpt1, Point2D.Double endpt2) { return ((endpt1.x - original.x) * (endpt1.x - endpt2.x) + (endpt1.y - original.y) * (endpt1.y - endpt2.y)) / endpt1.distanceSq(endpt2); } }