Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

public class Main {
    /**
     * Rotate a set of coordinates by a given angle
     * @param c_x
     * @param c_y
     * @param thetab
     * @param x
     * @param y
     * @return
     */
    public static double[] rotateCoord(double c_x, double c_y, double thetab, double x, double y) {
        double prc_x = x - c_x;
        double prc_y = y - c_y;
        double r = Math.sqrt(prc_x * prc_x + prc_y * prc_y);
        double theta = Math.atan2(prc_y, prc_x);
        theta = theta + thetab * Math.PI / 180.0;
        double pc_x = r * Math.cos(theta);
        double pc_y = r * Math.sin(theta);
        double p[] = new double[2];
        p[0] = pc_x + c_x;
        p[1] = pc_y + c_y;
        return p;
    }
}