Line data    Source code

       1             : #pragma once
       2             : 
       3             : #include "LinearOperator.h"
       4             : 
       5             : namespace elsa
       6             : {
       7             :     /**
       8             :      * @brief Operator that returns empty container filled with 0.
       9             :      *
      10             :      * @tparam data_t data type for the domain and range of the operator, defaulting to real_t
      11             :      *
      12             :      */
      13             :     template <typename data_t = real_t>
      14             :     class ZeroOperator : public LinearOperator<data_t>
      15             :     {
      16             :     public:
      17             :         explicit ZeroOperator(const DataDescriptor& domainDescriptor,
      18             :                               const DataDescriptor& rangeDescriptor);
      19             : 
      20          14 :         ~ZeroOperator() override = default;
      21             : 
      22             :     protected:
      23             :         /// default copy constructor, hidden from non-derived classes to prevent potential slicing
      24             :         ZeroOperator(const ZeroOperator<data_t>&) = default;
      25             : 
      26             :         void applyImpl(const DataContainer<data_t>& x, DataContainer<data_t>& Ax) const override;
      27             : 
      28             :         void applyAdjointImpl(const DataContainer<data_t>& y,
      29             :                               DataContainer<data_t>& Aty) const override;
      30             : 
      31             :         /// implement the polymorphic clone operation
      32             :         ZeroOperator<data_t>* cloneImpl() const override;
      33             : 
      34             :         /// implement the polymorphic comparison operation
      35             :         bool isEqual(const LinearOperator<data_t>& other) const override;
      36             :     };
      37             : } // namespace elsa