/*
===========================================================================
maya2q3 - export .md3 files from maya
Copyright (C) 2007 HermitWorks Entertainment Corporation

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
===========================================================================
*/

#ifndef INC__quat_h_
#define INC__quat_h_

/*
	Constructors are kept as seperate functions as putting them in their type
	will force constructors to propagate up through any class/struct that
	includes a vecN. Even if the default constructor is empty and gets optimized
	away this causes some stupid issues when trying to stick a vector in a union
	or at global scope.

	Three cheers for the C++ spec which doesn't treat an empty default constructor
	the same as the implied default constructor when there are no other constructors.
*/

#include "math-vector.h"

struct quat
{
public:
	float i, j, k, w;

	quat operator * ( const quat &q ) const;
	quat& operator *= ( const quat &q );

	inline vec3 ijk( void ) const { vec3 ret = { i, j, k }; return ret; }

	static const quat identity;
};

inline quat quatc( float i, float j, float k, float w ) { quat ret = { i, j, k, w }; return ret; }
inline quat quatc( const vec3 &ijk, float w ) { quat ret = { ijk.x, ijk.y, ijk.z, w }; return ret; }

#endif