arap.h

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// This file is part of libigl, a simple c++ geometry processing library.
// 
// Copyright (C) 2013 Alec Jacobson <alecjacobson@gmail.com>
// 
// 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_ARAP_H
#define IGL_ARAP_H
#include "igl_inline.h"
#include "min_quad_with_fixed.h"
#include "ARAPEnergyType.h"
#include <Eigen/Core>
#include <Eigen/Sparse>
 
namespace igl
{
  struct ARAPData
  {
    int n;
    Eigen::VectorXi G;
    ARAPEnergyType energy;
    bool with_dynamics;
    Eigen::MatrixXd f_ext;
    Eigen::MatrixXd vel;
    double h;
    double ym;
    int max_iter;
    Eigen::SparseMatrix<double> K;
    Eigen::SparseMatrix<double> M;
    Eigen::SparseMatrix<double> CSM;
    min_quad_with_fixed_data<double> solver_data;
    Eigen::VectorXi b;
    int dim;
      ARAPData():
        n(0),
        G(),
        energy(ARAP_ENERGY_TYPE_DEFAULT),
        with_dynamics(false),
        f_ext(),
        h(1),
        ym(1),
        max_iter(10),
        K(),
        CSM(),
        solver_data(),
        b(),
        dim(-1) // force this to be set by _precomputation
    {
    };
  };
  
  template <
    typename DerivedV,
    typename DerivedF,
    typename Derivedb>
  IGL_INLINE bool arap_precomputation(
    const Eigen::MatrixBase<DerivedV> & V,
    const Eigen::MatrixBase<DerivedF> & F,
    const int dim,
    const Eigen::MatrixBase<Derivedb> & b,
    ARAPData & data);
  template <
    typename Derivedbc,
    typename DerivedU>
  IGL_INLINE bool arap_solve(
    const Eigen::MatrixBase<Derivedbc> & bc,
    ARAPData & data,
    Eigen::MatrixBase<DerivedU> & U);
};
 
#ifndef IGL_STATIC_LIBRARY
#include "arap.cpp"
#endif
 
#endif