#pragma once

#include "CmPrerequisitesUtil.h"

namespace CamelotEngine
{
/** Structure used to define a box in a 3-D integer space.
    Note that the left, top, and front edges are included but the right, 
    bottom and back ones are not.
    */
	struct CM_UTILITY_EXPORT Box
	{
		size_t left, top, right, bottom, front, back;
		/// Parameterless constructor for setting the members manually
		Box()
			: left(0), top(0), right(1), bottom(1), front(0), back(1)
		{
		}
		/** Define a box from left, top, right and bottom coordinates
			This box will have depth one (front=0 and back=1).
			@param	l	x value of left edge
			@param	t	y value of top edge
			@param	r	x value of right edge
			@param	b	y value of bottom edge
			@note Note that the left, top, and front edges are included 
 				but the right, bottom and back ones are not.
		*/
		Box( size_t l, size_t t, size_t r, size_t b ):
			left(l),
			top(t),   
			right(r),
			bottom(b),
			front(0),
			back(1)
		{
			assert(right >= left && bottom >= top && back >= front);
		}
		/** Define a box from left, top, front, right, bottom and back
			coordinates.
			@param	l	x value of left edge
			@param	t	y value of top edge
			@param  ff  z value of front edge
			@param	r	x value of right edge
			@param	b	y value of bottom edge
			@param  bb  z value of back edge
			@note Note that the left, top, and front edges are included 
 				but the right, bottom and back ones are not.
		*/
		Box( size_t l, size_t t, size_t ff, size_t r, size_t b, size_t bb ):
			left(l),
			top(t),   
			right(r),
			bottom(b),
			front(ff),
			back(bb)
		{
			assert(right >= left && bottom >= top && back >= front);
		}
            
		/// Return true if the other box is a part of this one
		bool contains(const Box &def) const
		{
			return (def.left >= left && def.top >= top && def.front >= front &&
				def.right <= right && def.bottom <= bottom && def.back <= back);
		}
            
		/// Get the width of this box
		size_t getWidth() const { return right-left; }
		/// Get the height of this box
		size_t getHeight() const { return bottom-top; }
		/// Get the depth of this box
		size_t getDepth() const { return back-front; }
	};
}