Line On Line - Java 2D Graphics

Java examples for 2D Graphics:Shape

  1. HOME
  2. Java
  3. 2D Graphics
  4. Shape

Description

Line On Line

Demo Code

/*//from   w  w w.j a  va 2  s  .  c o  m
 * Copyright (C) 2012 www.amsoft.cn
 * 
 * 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.
 */
//package com.java2s;

public class Main {

    public static boolean LineOnLine(double x1, double y1, double x2,
            double y2, double x3, double y3, double x4, double y4) {
        double k1 = (y2 - y1) / (x2 - x1);
        double k2 = (y4 - y3) / (x4 - x3);
        if (k1 == k2) {
            return false;
        } else {
            double x = ((x1 * y2 - y1 * x2) * (x3 - x4) - (x3 * y4 - y3
                    * x4)
                    * (x1 - x2))
                    / ((y2 - y1) * (x3 - x4) - (y4 - y3) * (x1 - x2));
            double y = (x1 * y2 - y1 * x2 - x * (y2 - y1)) / (x1 - x2);
            return true;
        }
    }
}

Related Tutorials