//===========================================================================//
// File:	extntbox.hh                                                        //
// Project: MUNGA           Brick: Math Library                              //
// Contents: Interface specification of bounding box class                   //
//---------------------------------------------------------------------------//
//   Date    Who  Modification                                               //
// --------  ---  ---------------------------------------------------------- //
// 01/07/95  JMA  Initial coding.                                            //
//---------------------------------------------------------------------------//
// Copyright (C) 1994-1995 Virtual World Entertainment, Inc.                 //
// All Rights reserved worldwide                                             //
// This unpublished sourcecode is PROPRIETARY and CONFIDENTIAL               //
//===========================================================================//

#if !defined(EXTNTBOX_HPP)
#	define EXTNTBOX_HPP

#	if !defined(SCALAR_HPP)
#		include <scalar.hpp>
#	endif

	class Vector3D;
	class NotationFile;

	//~~~~~~~~~~~~~~~~~~~~~~~~~ ExtentBox ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

	class ExtentBox
	{
	 public:
		#if defined(USE_SIGNATURE)
			friend int
				Is_Signature_Bad(const volatile ExtentBox *);
		#endif

		Scalar
			minX,
			maxX,
			minY,
			maxY,
			minZ,
			maxZ;

		ExtentBox() {}
		ExtentBox(
			const Vector3D &min,
			const Vector3D &max
		);
		ExtentBox(const ExtentBox &box);

		const Scalar&
			operator[](int index) const
				{Check(this); return (&minX)[index];}
		Scalar&
			operator[](int index)
				{Check(this); return (&minX)[index];}

		ExtentBox&
			Intersect(
				const ExtentBox &box_1,
				const ExtentBox &box_2
			);
		Vector3D*
			Constrain(Vector3D *point) const;

		Logical
			Contains(const Vector3D &point) const;
		Logical
			Contains(const ExtentBox &box) const;
		Logical
			Intersects(const ExtentBox &box) const;

		Logical
			TestInstance() const;
		static Logical
			TestClass();
		friend ostream&
			operator<<(
				ostream& stream,
				const ExtentBox& e
			);
	};

	//~~~~~~~~~~~~~~~~~~~~~~~~~ ExtentBox functions ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

	void
   	Convert_From_Ascii(
      	const char *str,
         ExtentBox *extent_box
		);

	inline MemoryStream&
		MemoryStream_Read(
			MemoryStream* stream,
			ExtentBox *output
		)
			{return stream->ReadBytes(output, sizeof(*output));}
	inline MemoryStream&
		MemoryStream_Write(
			MemoryStream* stream,
			const ExtentBox *input
		)
			{return stream->WriteBytes(input, sizeof(*input));}

	ExtentBox *
		MakeExistanceBoxStream(
			NotationFile *notation_file,
			int *size
		);

#endif