/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 * 
 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org 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 Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************/

#ifndef _B2D_MATRIX3D_HXX
#define _B2D_MATRIX3D_HXX

#ifndef _B2D_POINT3D_HXX
#include "point3d.hxx"
#endif

/*************************************************************************
|*
|* homogene 4x4 matrix
|*
\************************************************************************/

namespace binfilter {
class Matrix3D
{
protected:
	Point3D						M[3];

public:
	// default: Einheitsmatrix erstellen (Vektoren sind auf 0
	// initialisiert, der recte Spaltenvektor auf 1)
	Matrix3D() { M[0][0] = M[1][1] = 1.0;
				 M[0][2] = M[1][2] = 0.0; }

	// Zeilenvektor zurueckgeben
	Point3D& operator[](int nPos) { return M[nPos]; }
	const Point3D& operator[](int nPos) const { return M[nPos]; }

	// Spaltenvektor zurueckgeben
	Point3D GetColumnVector(int nCol) const
		{ return Point3D(M[0][nCol], M[1][nCol], M[2][nCol]); }

	// Auf Einheitsmatrix zuruecksetzen
	void Identity(void);

	// Rotation
	void Rotate(double fAngle);
	void Rotate(double fSin, double fCos );

	// Translation
	void Translate(double fX, double fY);
	void Translate(const Vector2D& aTrans);

	// Skalierung
	void Scale(double fX, double fY);
	void Scale(const Vector2D& aScale);

	// Shearing-Matrices
	void ShearX(double fSx);
	void ShearY(double fSy);

	// Addition, Subtraktion
	Matrix3D&	operator+=	(const Matrix3D&);
	Matrix3D&	operator-=	(const Matrix3D&);
	Matrix3D	operator+ 	(const Matrix3D&) const;
	Matrix3D	operator-	(const Matrix3D&) const;

	// Vergleichsoperatoren
	BOOL		operator==	(const Matrix3D&) const;
	BOOL		operator!=	(const Matrix3D&) const;

	// Multiplikation, Division mit Konstante
	Matrix3D&	operator*=	(double);
	Matrix3D	operator*	(double) const;
	Matrix3D&	operator/=	(double);
	Matrix3D	operator/	(double) const;

	// Matritzenmultiplikation von links auf die lokale
	Matrix3D&	operator*=	(const Matrix3D&);
	Matrix3D	operator*	(const Matrix3D&) const;

	// Operatoren zur Punkttransformation
	friend Point3D	operator*	(const Matrix3D&, const Point3D&);
	friend Point3D&	operator*=	(Point3D& rPnt, const Matrix3D& rMat)
		{ return (rPnt = rMat * rPnt); }

	// Operatoren zur Vektortransformation
	friend Vector2D		operator*	(const Matrix3D&, const Vector2D&);
	friend Vector2D&	operator*=	(Vector2D& rVec, const Matrix3D& rMat)
		{ return (rVec = rMat * rVec); }

	// Streamoperatoren
	friend SvStream& operator>>(SvStream& rIStream, Matrix3D&);
	friend SvStream& operator<<(SvStream& rOStream, const Matrix3D&);

	// Help routine to decompose given homogen 3x3 matrix to components. A correction of
	// the components is done to avoid inaccuracies.
	BOOL DecomposeAndCorrect(Vector2D& rScale, double& rShear, double& rRotate, Vector2D& rTranslate) const;
};
}//end of namespace binfilter

#endif          // _B2D_MATRIX3D_HXX
