libigl_Martin/include/igl/nchoosek.h

// This file is part of libigl, a simple c++ geometry processing library.
//
// Copyright (C) 2014 Olga Diamanti <olga.diam@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_NCHOOSEK
#define IGL_NCHOOSEK
#include "igl_inline.h"
#include <vector>

#include <Eigen/Core>

namespace igl {
  //todo
  /// Given 2 vectors centered on origin calculate the rotation matrix from first to the second

  // Inputs:
  //   v0, v1         the two #3 by 1 vectors
  //   normalized     boolean, if false, then the vectors are normalized prior to the calculation
  // Output:
  //                  3 by 3 rotation matrix that takes v0 to v1
  //
  IGL_INLINE void nchoosek(int offset,
                           int k,
                           int N,
                           std::vector<std::vector<int>> &allCombs);
}


#ifdef IGL_HEADER_ONLY
#include "nchoosek.cpp"
#endif


#endif /* defined(IGL_NCHOOSEK) */