Here you can find the source of intersectRect(double x1, double y1, double w1, double h1, double x2, double y2, double w2, double h2)
public static boolean intersectRect(double x1, double y1, double w1, double h1, double x2, double y2, double w2, double h2)
//package com.java2s; /*/*from w w w .j av a 2s.c o m*/ * Copyright 2010 dorkbox, llc * * 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 { public static boolean intersectRect(double x1, double y1, double w1, double h1, double x2, double y2, double w2, double h2) { return intersectRange(x1, x1 + w1, x2, x2 + w2) && intersectRange(y1, y1 + h1, y2, y2 + h2); } public static boolean intersectRange(double ax1, double ax2, double bx1, double bx2) { return Math.max(ax1, bx1) <= Math.min(ax2, bx2); } }