class Window
{
  Config conf;
  
  Point point1;
  Point point2;
  Point point3;
  Point point4;
  
  Point insidePoint1;
  Point insidePoint2;
  Point insidePoint3;
  Point insidePoint4;
  
  FramePiece framePiece1;
  FramePiece framePiece2;
  FramePiece framePiece3;
  FramePiece framePiece4;
  
  float smallestAngle = PI / 2;
  
  float elevation;
  
  Window(Point point1, Point point2, Point point3, Point point4, float elevation)
  {
    this.conf = new Config();
    
    this.elevation = elevation;
    
    this.point1 = point1;
    this.point2 = point2;
    this.point3 = point3;
    this.point4 = point4;
    
    this.insidePoint1 = getInsidePoint(this.point1, this.point4, this.point2, "+x");
    this.insidePoint2 = getInsidePoint(this.point2, this.point1, this.point3, "+y");
    this.insidePoint3 = getInsidePoint(this.point3, this.point2, this.point4, "-x");
    this.insidePoint4 = getInsidePoint(this.point4, this.point3, this.point1, "-y");
    
    
    
    this.framePiece1 = new FramePiece(this.point1, this.point2, this.insidePoint2, this.insidePoint1, this.elevation);
    this.framePiece2 = new FramePiece(this.point2, this.point3, this.insidePoint3, this.insidePoint2, this.elevation);
    this.framePiece3 = new FramePiece(this.point3, this.point4, this.insidePoint4, this.insidePoint3, this.elevation);
    this.framePiece4 = new FramePiece(this.point4, this.point1, this.insidePoint1, this.insidePoint4, this.elevation);
  }
  
  void drawYourself(float ratio)
  {
    
    
    this.framePiece1.drawYourself(ratio);
    this.framePiece2.drawYourself(ratio);
    this.framePiece3.drawYourself(ratio);
    this.framePiece4.drawYourself(ratio);
    
  }
  
  Point getInsidePoint(Point point1, Point point2, Point point3, String direction)
  {
    Vector vector1 = new Vector(point1, point2);
    Vector vector2 = new Vector(point1, point3);
    
    //winkelhalbierende
    Vector midVector = new Vector( vector1.getX() + vector2.getX(), vector1.getY() + vector2.getY() );
    
    // winkel zwischen den beiden vektoren
    float angle = this.getAngle(vector1, vector2) / 2;
    if (angle * 2 < this.smallestAngle)
    {
      
      this.smallestAngle = 2 * angle;
    }
  
    
    //laenge des mittleren vektors
    float l = this.conf.frameSize / sin(angle);
    //println("l:" + l);
    
    //winkel zwischen einheitsvektor ind midVector
    float angleXAxis = this.getAngle(midVector, new Vector(1.0, 0.0));
    float angleYAxis = this.getAngle(midVector, new Vector(0.0, 1.0));
    
    
    //insidePoint
    int factor = 1;
    if (direction == "+x" && l * cos(angleXAxis) < 0)
    {
      factor = -1;
    }
    else if (direction == "-x" && l * cos(angleXAxis) > 0)
    {
      factor = -1;
    }
    else if (direction == "+y" && l * cos(angleYAxis) < 0)
    {
      factor = -1;
    }
    else if (direction == "-y" && l * cos(angleYAxis) > 0)
    {
      factor = -1;
    }
    
    
    Point insidePoint = new Point( point1.getX() + (l * cos(angleXAxis) * factor) , point1.getY() + (l * cos(angleYAxis) * factor), 0);
    return insidePoint;
    
  }
  float getAngle(Vector vector1, Vector vector2)
  {
    float angle = acos(  ( vector1.getX() * vector2.getX() + vector1.getY() * vector2.getY() ) /  
    (    sqrt ( pow(vector1.getX(), 2) + pow(vector1.getY(), 2) )   * sqrt ( pow(vector2.getX(), 2) + pow(vector2.getY(), 2) )     )  );
    
    return angle;
  
  }
  
  float getSmallestAngle()
  {
    return this.smallestAngle;
  }
  
}