pointa = p1; pointb = p2; pointc = p3;
pointa = new Vector3f(p1); pointb = new Vector3f(p2); pointc = new Vector3f(p3);
    public Triangle(Vector3f p1, Vector3f p2, Vector3f p3) {        pointa = p1;        pointb = p2;        pointc = p3;    }