#import "rect.h"

#import <wgd/vector.h>

using namespace wgd;

Rect::Rect (float x1, float y1, float x2, float y2)
	: x1(x1), y1(y1), x2(x2), y2(y2) {}
	
Rect::Rect (const Vector2D &p1, const Vector2D &p2)
	: x1(p1.x), y1(p1.y), x2(p2.x), y2(p2.y) {}
Vector2D Rect::centre () const
{
	return Vector2D((x1 + x2) / 2, (y1 + y2) / 2);
}

bool Rect::intersects (const Rect &r) const
{
	return ! (r.x2 < x1 || r.x1 > x2 || r.y2 < y1 || r.y1 > y2);
}

bool Rect::contains (const Vector2D &p) const
{
	return (p.x >= x1 && p.x <= x2 && p.y >= y1 && p.y <= y2);
}

void Rect::translate (const Vector2D &t)
{
	x1 += t.x;
	x2 += t.x;
	y1 += t.y;
	y2 += t.y;
}

void Rect::translate (float dx, float dy)
{
	x1 += dx;
	x2 += dx;
	y1 += dy;
	y2 += dy;
}

void Rect::add (float x, float y)
{
	if (x < x1)
	{
		x1 = x;
	}
	else if (x > x2)
	{
		x2 = x;
	}
	
	if (y < y1)
	{
		y1 = y;
	}
	else if (y > y2)
	{
		y2 = y;
	}
}

void Rect::add (const Rect &r)
{
	add(r.x1, r.y1);
	add(r.x2, r.y2);
}

void Rect::add (const Vector2D &p)
{
	add(p.x, p.y);
}