minecraft-source/src/com/mojang/math/Vector3d.java

package com.mojang.math;

public class Vector3d {
    public double x;
    public double y;
    public double z;
    
    public Vector3d(final double double1, final double double2, final double double3) {
        this.x = double1;
        this.y = double2;
        this.z = double3;
    }
}