#include <iostream>
#include <cmath>
#include "point.h"
#include "vector_fancyT.h"
using namespace std;


fancy_triangle::fancy_triangle()
:triangle(), my_color(0)
{
}

fancy_triangle::fancy_triangle(point p1, point p2, point p3)
:triangle(p1,p2,p3), my_color(0)
{
}

void fancy_triangle::set_color(int color)
{
	my_color=color;
}

void fancy_triangle::shift(vector v)
{
	triangle::shift(point(v.x(),v.y()));
}

fancy_triangle fancy_triangle::rotate(double theta)   // use default center 
{
	point C = center();
	point pp1 = rotate_oneP(theta, p1(), C);
	point pp2 = rotate_oneP(theta, p2(), C);
	point pp3 = rotate_oneP(theta, p3(), C);
	return fancy_triangle(pp1,pp2,pp3);	
}

fancy_triangle fancy_triangle::rotate(double theta, point C) // use c as center;
{
	point pp1 = rotate_oneP(theta, p1(), C);
	point pp2 = rotate_oneP(theta, p2(), C);
	point pp3 = rotate_oneP(theta, p3(), C);
	return fancy_triangle(pp1,pp2,pp3);
}

point fancy_triangle::rotate_oneP(double theta, point P, point C)
{
	double x = P.x() - C.x();
	double y = P.y() - C.y();
	double r = P.distance(C);
	double beta;
	
	if ( x<= 0.0000001 && x >= -0.0000001) 
		beta=3.1415926/2;
	else 
		beta = atan(y/x);

	if (x < -0.0000001)
		beta = beta+3.1415926;
	beta -= theta;
	x = r*cos(beta);
	y = r*sin(beta);

	return point(x+C.x(),y+C.y());
}


vector::vector()
:point(0,0)
{
}
 
vector::vector(double x, double y)
:point(x,y)
{
}

double vector::length() const
{
	return distance(point(0,0));
}

double vector::x() const
{
	return (point::x());
}

double vector::y() const
{
	return (point::y());
}

void vector::print_vector()
{
	cout << "(" << x() << "," << y() << ")";
}