squared-distance.hpp

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#pragma once
 
#include "proxsuite-nlp/modelling/costs/quadratic-residual.hpp"
#include "proxsuite-nlp/modelling/residuals/state-residual.hpp"
 
namespace proxsuite {
namespace nlp {
 
template <typename _Scalar>
struct QuadraticDistanceCostTpl : QuadraticResidualCostTpl<_Scalar> {
  using Scalar = _Scalar;
  PROXSUITE_NLP_DYNAMIC_TYPEDEFS(Scalar);
  using StateResidual = ManifoldDifferenceToPoint<Scalar>;
  using Manifold = ManifoldAbstractTpl<Scalar>;
  using Base = QuadraticResidualCostTpl<Scalar>;
  using Base::residual_;
  using Base::weights_;
 
  QuadraticDistanceCostTpl(const polymorphic<Manifold> &space,
                           const ConstVectorRef &target,
                           const ConstMatrixRef &weights)
      : Base(std::make_shared<StateResidual>(space, target), weights) {}
 
  QuadraticDistanceCostTpl(const polymorphic<Manifold> &space,
                           const ConstVectorRef &target)
      : QuadraticDistanceCostTpl(
            space, target, MatrixXs::Identity(space->ndx(), space->ndx())) {}
 
  QuadraticDistanceCostTpl(const polymorphic<Manifold> &space)
      : QuadraticDistanceCostTpl(space, space->neutral()) {}
 
  ConstVectorRef getTarget() const {
    return static_cast<StateResidual *>(residual_.get())->target_;
  }
 
  void updateTarget(const ConstVectorRef &x) {
    static_cast<StateResidual *>(residual_.get())->target_ = x;
  }
};
 
} // namespace nlp
} // namespace proxsuite
 
#ifdef PROXSUITE_NLP_ENABLE_TEMPLATE_INSTANTIATION
#include "proxsuite-nlp/modelling/costs/squared-distance.txx"
#endif