box_clipper3D.h

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#pragma once
 
#include <pcl/memory.h>
#include <pcl/pcl_macros.h>
#include "clipper3D.h"
 
namespace pcl
{
  /**
    * \author Suat Gedikli <gedikli@willowgarage.com>
    * \brief Implementation of a box clipper in 3D. Actually it allows affine transformations, thus any parallelepiped in general pose.
    *        The affine transformation is used to transform the point before clipping it using a cube centered at origin and with an extend of -1 to +1 in each dimension
    * \sa CropBox
    * \ingroup filters
    */
  template<typename PointT>
  class BoxClipper3D : public Clipper3D<PointT>
  {
    public:
 
      using Ptr = shared_ptr<BoxClipper3D<PointT> >;
      using ConstPtr = shared_ptr<const BoxClipper3D<PointT> >;
 
 
      /**
        * \author Suat Gedikli <gedikli@willowgarage.com>
        * \brief Constructor taking an affine transformation matrix, which allows also shearing of the clipping area
        * \param[in] transformation the 3 dimensional affine transformation that is used to describe the cube ([-1; +1] in each dimension). The transformation is applied to the point(s)!
        */
      BoxClipper3D (const Eigen::Affine3f& transformation);
 
      /**
        * \brief creates a BoxClipper object with a scaled box in general pose
        * \param[in] rodrigues the rotation axis and angle given by the vector direction and length respectively
        * \param[in] translation the position of the box center
        * \param[in] box_size the size of the box for each dimension
        */
      BoxClipper3D (const Eigen::Vector3f& rodrigues, const Eigen::Vector3f& translation, const Eigen::Vector3f& box_size);
 
      /**
        * \brief Set the affine transformation
        * \param[in] transformation applied to the point(s)
        */
      void setTransformation (const Eigen::Affine3f& transformation);
 
      /**
        * \brief sets the box in general pose given by the orientation position and size
        * \param[in] rodrigues the rotation axis and angle given by the vector direction and length respectively
        * \param[in] translation the position of the box center
        * \param[in] box_size the size of the box for each dimension
        */
      void setTransformation (const Eigen::Vector3f& rodrigues, const Eigen::Vector3f& translation, const Eigen::Vector3f& box_size);
 
      /**
        * \brief virtual destructor
        */
      ~BoxClipper3D () noexcept override;
 
      bool
      clipPoint3D (const PointT& point) const override;
 
      bool
      clipLineSegment3D (PointT& from, PointT& to) const override;
 
      void
      clipPlanarPolygon3D (std::vector<PointT, Eigen::aligned_allocator<PointT> >& polygon) const override;
 
      void
      clipPlanarPolygon3D (const std::vector<PointT, Eigen::aligned_allocator<PointT> >& polygon, std::vector<PointT, Eigen::aligned_allocator<PointT> >& clipped_polygon) const override;
 
      void
      clipPointCloud3D (const pcl::PointCloud<PointT> &cloud_in, Indices& clipped, const Indices& indices = Indices ()) const override;
 
      Clipper3D<PointT>*
      clone () const override;
 
    protected:
      float getDistance (const PointT& point) const;
      void transformPoint (const PointT& pointIn, PointT& pointOut) const;
    private:
      /**
        * \brief the affine transformation that is applied before clipping is done on the [-1; +1] cube.
        */
      Eigen::Affine3f transformation_;
 
    public:
      PCL_MAKE_ALIGNED_OPERATOR_NEW
  };
}
 
#include <pcl/filters/impl/box_clipper3D.hpp>