crop_hull.h

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#ifndef PCL_FILTERS_CROP_HULL_H_
#define PCL_FILTERS_CROP_HULL_H_

#include <pcl/point_types.h>
#include <pcl/Vertices.h>
#include <pcl/filters/filter_indices.h>

namespace pcl
{
  template<typename PointT>
  class CropHull: public FilterIndices<PointT>
  {
    using Filter<PointT>::filter_name_;
    using Filter<PointT>::indices_;
    using Filter<PointT>::input_;
    
    typedef typename Filter<PointT>::PointCloud PointCloud;
    typedef typename PointCloud::Ptr PointCloudPtr;
    typedef typename PointCloud::ConstPtr PointCloudConstPtr;

    public:
      CropHull () :
        hull_polygons_(),
        hull_cloud_(),
        dim_(3),
        crop_outside_(true)
      {
        filter_name_ = "CropHull";
      }

      inline void
      setHullIndices (const std::vector<Vertices>& polygons)
      {
        hull_polygons_ = polygons;
      }

      std::vector<Vertices>
      getHullIndices () const
      {
        return (hull_polygons_);
      }
      
      inline void
      setHullCloud (PointCloudPtr points)
      {
        hull_cloud_ = points;
      }

      PointCloudPtr
      getHullCloud () const
      {
        return (hull_cloud_);
      }
    
      inline void
      setDim (int dim)
      {
        dim_ = dim;
      }
      
      inline void
      setCropOutside(bool crop_outside)
      {
        crop_outside_ = crop_outside;
      }

    protected:
      void
      applyFilter (PointCloud &output);

      void        
      applyFilter (std::vector<int> &indices);

    private:  
      Eigen::Vector3f
      getHullCloudRange ();
      
      template<unsigned PlaneDim1, unsigned PlaneDim2> void
      applyFilter2D (PointCloud &output); 

      template<unsigned PlaneDim1, unsigned PlaneDim2> void
      applyFilter2D (std::vector<int> &indices);

      void
      applyFilter3D (PointCloud &output);

      void
      applyFilter3D (std::vector<int> &indices);

      template<unsigned PlaneDim1, unsigned PlaneDim2> inline static bool
      isPointIn2DPolyWithVertIndices (const PointT& point,
                                      const Vertices& verts,
                                      const PointCloud& cloud);

      inline static bool
      rayTriangleIntersect (const PointT& point,
                            const Eigen::Vector3f& ray,
                            const Vertices& verts,
                            const PointCloud& cloud);


      std::vector<pcl::Vertices> hull_polygons_;

      PointCloudPtr hull_cloud_;

      int dim_;

      bool crop_outside_;
  };

} // namespace pcl

#endif // ndef PCL_FILTERS_CROP_HULL_H_