// This file is part of libigl, a simple c++ geometry processing library.
// 
// Copyright (C) 2018 Zhongshi Jiang <jiangzs@nyu.edu>
// 
// This Source Code Form is subject to the terms of the Mozilla Public License 
// v. 2.0. If a copy of the MPL was not distributed with this file, You can 
// obtain one at http://mozilla.org/MPL/2.0/.
#ifndef IGL_MAPPING_ENERGY_WITH_JACOBIANS_H
#define IGL_MAPPING_ENERGY_WITH_JACOBIANS_H

#include "igl_inline.h"
#include "MappingEnergyType.h"
#include <Eigen/Dense>

namespace igl
{
  /// Compute the rotation-invariant energy of a mapping (represented in Jacobians and areas)
  ///
  /// @param[in] Ji #F by 4 (9 if 3D) entries of jacobians
  /// @param[in] areas: #F by 1 face areas
  /// @param[in] slim_energy energy type as in igl::MappingEnergyType
  /// @param[in] exp_factor see igl::MappingEnergyType
  /// @return energy value
  ///
  ///
  /// \see MappingEnergyType
  IGL_INLINE double mapping_energy_with_jacobians(
    const Eigen::MatrixXd &Ji, 
    const Eigen::VectorXd &areas, 
    igl::MappingEnergyType slim_energy, 
    double exp_factor);
}
#ifndef IGL_STATIC_LIBRARY
#  include "mapping_energy_with_jacobians.cpp"
#endif

#endif