Here you can find the source of distance(int ax, int ay, int bx, int by)
static public double distance(int ax, int ay, int bx, int by)
//package com.java2s; /*//from www.ja v a 2s .co m * Copyright 2007-2014 Daniel Graf (https://github.com/danielgraf) * * 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. */ public class Main { static public double distance(int ax, int ay, int bx, int by) { int length_A = 0; int length_B = 0; if (bx > ax) { length_A = bx - ax; } else { length_A = ax - bx; } if (by > ay) { length_B = by - ay; } else { length_B = ay - by; } double result = Math .sqrt(length_B * length_B + length_A * length_A); return result; } static public double distance(double ax, double ay, double bx, double by) { double length_A = 0; double length_B = 0; if (bx > ax) { length_A = bx - ax; } else { length_A = ax - bx; } if (by > ay) { length_B = by - ay; } else { length_B = ay - by; } double result = Math .sqrt(length_B * length_B + length_A * length_A); return result; } }