package Geometry;

public class Triangle
{
    Point P;
    Point Q;
    Point R;
    

    public Point getP()
    {
	return this.P;
    }

    public Point getQ()
    {
	return this.Q;
    }

    public Point getR()
    {
	return this.R;
    }

    public Triangle(Point A, Point B, Point C)
    {
	this.P = new Point(A.x,A.y);
	this.Q = new Point(B.x,B.y);
	this.R = new Point(C.x,C.y); 
    }	

    public Triangle(double x1,double y1,double x2,double y2,double x3,double y3)
    {
	this.P = new Point(x1,y1);
	this.Q = new Point(x2,y2);
	this.R = new Point(x3,y3);
    }
	
    public double Perimeter()
    {
	double peri;
	peri = this.P.distance_from_point(this.Q);
	peri = peri + this.P.distance_from_point(this.R);
	peri = peri + this.Q.distance_from_point(this.R);
	return peri;
    }

    public void Translate(double x_trans, double y_trans)
    {
	this.P.translate(x_trans,y_trans);
	this.Q.translate(x_trans,y_trans);
	this.R.translate(x_trans,y_trans);
    }

    public double Area()
    {
	double peri,area,s,a,b,c;
	peri = this.Perimeter();
	s = peri/2;
	a = this.P.distance_from_point(this.Q);
	b = this.P.distance_from_point(this.R);
	c = this.Q.distance_from_point(this.R);
	area = Math.sqrt(s*(s-a)*(s-b)*(s-c));
	return area;
    }
}