Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

public class Main {
    /**
     * Calculates the angle between two points on a cartesian plane
     */
    public static float getAngle(float center_x, float center_y, float post_x, float post_y) {
        float tmpv_x = post_x - center_x;
        float tmpv_y = post_y - center_y;
        float d = (float) Math.sqrt(tmpv_x * tmpv_x + tmpv_y * tmpv_y);
        float cos = tmpv_x / d;
        float angle = (float) Math.toDegrees(Math.acos(cos));

        angle = (tmpv_y < 0) ? angle * -1 : angle;

        return angle;
    }
}