class Vector
{
  float x;
  float y;
  Point point1;
  Point point2;
  Vector(Point point1, Point point2)
  {
    this.point1 = point1;
    this.point2 = point2;
    
    this.x = this.point2.getX() - this.point1.getX();
    this.y = this.point2.getY() - this.point1.getY();
    
    
    //in einheitsvektor umwandeln
    float value = sqrt(pow(this.x, 2) + pow(this.y, 2));
    
    this.x = this.x / value;
    this.y = this.y / value;
  }
  
  Vector(float x, float y)
  {
    this.x = x;
    this.y = y;
  }
  
  float getX()
  {
    return this.x;
  }
  float getY()
  {
    return this.y;
  }

}