package me.hugmanrique.vectorgrouper;

import lombok.Getter;
import lombok.RequiredArgsConstructor;

/**
 * @author Hugo Manrique
 * @since 19/07/2018
 */
@Getter
@RequiredArgsConstructor
public class Vector {
    private final double x;
    private final double y;
    private final double z;

    public Vector(int x, int y, int z) {
        this((double) x, (double) y, (double) z);
    }

    /**
     * Calculates the squared distance using the Pythagorean theorem
     */
    public double distanceSquared(Vector other) {
        double xDiff = x - other.getX();
        double yDiff = y - other.getY();
        double zDiff = z - other.getZ();

        return xDiff * xDiff + yDiff * yDiff + zDiff * zDiff;
    }

    public double distance(Vector other) {
        return Math.sqrt(distanceSquared(other));
    }

    @Override
    public boolean equals(Object obj) {
        if (!(obj instanceof Vector)) {
            return false;
        }

        Vector other = (Vector) obj;

        return x == other.getX() && y == other.getY() && z == other.getZ();
    }

    @Override
    public String toString() {
        return "Vector(x=" + x + ", y=" + y + ", z=" + z + ")";
    }
}