Vector

gistfile1.txt

package com.thevoxelbox.node.util;

public class Vector
{

    double[] vec;

    public Vector(double x, double y, double z)
    {
        this.vec = new double[] { x, y, z };
    }

    public double getX()
    {
        return vec[0];
    }

    public double getY()
    {
        return vec[1];
    }

    public double getZ()
    {
        return vec[2];
    }

    public Vector add(Vector v)
    {
        return new Vector(getX() + v.getX(), getY() + v.getY(), getZ() + v.getZ());
    }

    public Vector multipy(double scalar)
    {
        return new Vector(getX() * scalar, getY() * scalar, getZ() * scalar);
    }

    public Vector project(Vector b)
    {
        Vector a = clone();
        a.multipy(a.dot(b) / a.lengthSquared());
        return a;
    }

    public double dot(Vector v)
    {
        return getX() * v.getX() + getY() * v.getY() + getZ() * v.getZ();
    }

    public Vector cross(Vector v)
    {
        return new Vector(getY() * v.getZ() - getZ() * v.getY(), getZ() * v.getX() - getX() * v.getZ(), getX() * v.getY() - getY() * v.getX());
    }

    public Vector normalize()
    {
        return new Vector(getX() / length(), getY() / length(), getZ() / length());
    }

    public double length()
    {
        return Math.sqrt(getX() * getX() + getY() * getY() + getZ() * getZ());
    }

    public double lengthSquared()
    {
        return getX() * getX() + getY() * getY() + getZ() * getZ();
    }

    public Vector clone()
    {
        return new Vector(getX(), getY(), getZ());
    }

}