text: // 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_RANDOM_DIR_H
  #define IGL_RANDOM_DIR_H
  #include "igl_inline.h"
  
  #include <Eigen/Core>
  
  namespace igl
  {
    // Generate a uniformly random unit direction in 3D, return as vector
    IGL_INLINE Eigen::Vector3d random_dir();
    // Generate n stratified uniformly random unit directions in 3d, return as rows
    // of an n by 3 matrix
    //
    // Inputs:
    //   n  number of directions
    // Return n by 3 matrix of random directions
    IGL_INLINE Eigen::MatrixXd random_dir_stratified(const int n);
  }
  
  #ifndef IGL_STATIC_LIBRARY
  #  include "random_dir.cpp"
  #endif
  
  #endif
  