Transformation.hpp

#ifndef DM_TRANSFORMATION_HPP_INCLUDED
#define DM_TRANSFORMATION_HPP_INCLUDED

#ifdef _MSC_VER
#pragma once
#endif

#include "DM/config.hpp"
#include "DM/Handle.hpp"
#include "DM/IGeometry.hpp"

DM_NAMESPACE_BEGIN

/// Interface for generic geometry object coordiante transformation
class DM_API ITrafo
{
protected:
  virtual ~ITrafo() {}

public:
  /// \brief retuns the dimension of transformation.
  /// This info helps to optimize the actual transformation process of the geometry objects
  /// 
  /// \return 1 if only z values are changed
  /// \return 2 for 2d transformations
  /// \return 3 if all coordinate values may be changed
  virtual int  trafoDim() const = 0;

  /// \brief performs coordiante transformation
  /// please note that coordinates must not be changed if not effected by the transformation
  ///
  /// \param[in,out]  x    x-coordinates
  /// \param[in,out]  y    y-coordinates
  /// \param[in,out]  z    z-coordinates
  /// \param[in]      inv  inversion flag if transformation should be inverted
  virtual void transform(double &x, double &y, double &z, bool inv = false) const = 0;
};

/// \brief provides a generic framework for transforming geometry objects
void DM_API transform(const ITrafo &trafo, IGeometry &geom, bool inv = false);

DM_NAMESPACE_END

#endif //DM_TRANSFORMATION_HPP_INCLUDED