warp_point_rigid_3d.h

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#pragma once
 
#include <pcl/registration/warp_point_rigid.h>
 
namespace pcl {
namespace registration {
/** \brief @b WarpPointRigid3D enables 3D (1D rotation + 2D translation)
 * transformations for points.
 *
 * \note The class is templated on the source and target point types as well as on the
 * output scalar of the transformation matrix (i.e., float or double). Default: float.
 * \author Radu B. Rusu
 * \ingroup registration
 */
template <typename PointSourceT, typename PointTargetT, typename Scalar = float>
class WarpPointRigid3D : public WarpPointRigid<PointSourceT, PointTargetT, Scalar> {
public:
  using Matrix4 = typename WarpPointRigid<PointSourceT, PointTargetT, Scalar>::Matrix4;
  using VectorX = typename WarpPointRigid<PointSourceT, PointTargetT, Scalar>::VectorX;
 
  using Ptr = shared_ptr<WarpPointRigid3D<PointSourceT, PointTargetT, Scalar>>;
  using ConstPtr =
      shared_ptr<const WarpPointRigid3D<PointSourceT, PointTargetT, Scalar>>;
 
  /** \brief Constructor. */
  WarpPointRigid3D() : WarpPointRigid<PointSourceT, PointTargetT, Scalar>(3) {}
 
  /** \brief Empty destructor */
  ~WarpPointRigid3D() override = default;
 
  /** \brief Set warp parameters.
   * \param[in] p warp parameters (tx ty rz)
   */
  void
  setParam(const VectorX& p) override
  {
    assert(p.rows() == this->getDimension());
    Matrix4& trans = this->transform_matrix_;
 
    trans = Matrix4::Zero();
    trans(3, 3) = 1;
    trans(2, 2) = 1; // Rotation around the Z-axis
 
    // Copy the rotation and translation components
    trans.template block<4, 1>(0, 3) = Eigen::Matrix<Scalar, 4, 1>(p[0], p[1], 0, 1.0);
 
    // Compute w from the unit quaternion
    Eigen::Rotation2D<Scalar> r(p[2]);
    trans.template topLeftCorner<2, 2>() = r.toRotationMatrix();
  }
};
} // namespace registration
} // namespace pcl