TransformMatrix.h

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/* -*- mode: c++ -*- */
#ifndef _BOARD_TRANSFORM_MATRIX_H_
#define _BOARD_TRANSFORM_MATRIX_H_

#include <cmath>
#include <iostream>
#include "Point.h"

namespace LibBoard {

class TransformMatrix {
public:

  enum Type { SVG, Postscript };

  inline TransformMatrix();
  inline TransformMatrix(double m11, double m12, double m13,
                         double m21, double m22, double m23);

  static TransformMatrix translation(double dx, double dy);
  static TransformMatrix translation(const Point &);
  static TransformMatrix scaling(double sx, double sy);
  static TransformMatrix rotation(double angle, Type type );
  static TransformMatrix rotation(double angle, const Point & center, Type type );

  TransformMatrix operator*(const TransformMatrix & ) const;

  TransformMatrix & operator*=(const TransformMatrix & );

  Point operator*( const Point & point ) const;

  TransformMatrix operator+( const Point & ) const;

  TransformMatrix & operator+=( const Point & );

  void flushSVG(std::ostream & ) const;

  void flushEPS(std::ostream & ) const;


private:
  double _m11, _m12, _m13;
  double _m21, _m22, _m23;
};

} // namespace LibBoard

#include "TransformMatrix.ih"

#endif /* _TRANSFORMS_MATRIX_H_ */