CGAL 5.3 - CGAL and Solvers
CGAL::Eigen_matrix< FT, D1, D2 > Struct Template Reference

#include <CGAL/Eigen_matrix.h>

Inherits from

Matrix< FT, D1, D2 >.


template<class FT, int D1 = ::Eigen::Dynamic, int D2 = ::Eigen::Dynamic>
struct CGAL::Eigen_matrix< FT, D1, D2 >

The class Eigen_matrix is a wrapper around Eigen matrix type Eigen::Matrix.

Is Model Of:
Template Parameters
TNumber type.
D1Number of rows, or Dynamic
D2Number of columns, or Dynamic
See also

Public Types

typedef ::Eigen::Matrix< FT, D1, D2 > EigenType
 The internal matrix type from Eigen.

Public Member Functions

 Eigen_matrix ()
 Constructs a null matrix.
 Eigen_matrix (std::size_t nr, std::size_t nc)
 Constructs an uninitialized matrix with nr rows and nc columns. More...
 Eigen_matrix (const EigenType &b)
 Constructs a matrix from an Eigen matrix.
std::size_t number_of_rows () const
 Returns the matrix number of rows.
std::size_t number_of_columns () const
 Returns the matrix number of columns.
FT operator() (std::size_t i, std::size_t j) const
 Returns the value of the matrix at position (i,j).
void set (std::size_t i, std::size_t j, FT value)
 Writes access to a matrix coefficient: a_ij <- val.
const EigenTypeeigen_object () const
 Returns the internal matrix, with type EigenType.

Constructor & Destructor Documentation

◆ Eigen_matrix()

template<class FT , int D1 = ::Eigen::Dynamic, int D2 = ::Eigen::Dynamic>
CGAL::Eigen_matrix< FT, D1, D2 >::Eigen_matrix ( std::size_t  nr,
std::size_t  nc 

Constructs an uninitialized matrix with nr rows and nc columns.

This is useful for dynamic-size matrices. For fixed-size matrices, it is redundant to pass these parameters.