mirror of
https://git.dev.opencascade.org/repos/occt.git
synced 2025-05-21 10:55:33 +03:00
42cf5bc1ca
Automatic upgrade of OCCT code by command "occt_upgrade . -nocdl": - WOK-generated header files from inc and sources from drv are moved to src - CDL files removed - All packages are converted to nocdlpack
107 lines
2.9 KiB
C++
107 lines
2.9 KiB
C++
// Created on: 1991-05-14
|
|
// Created by: Laurent PAINNOT
|
|
// Copyright (c) 1991-1999 Matra Datavision
|
|
// Copyright (c) 1999-2014 OPEN CASCADE SAS
|
|
//
|
|
// This file is part of Open CASCADE Technology software library.
|
|
//
|
|
// This library is free software; you can redistribute it and/or modify it under
|
|
// the terms of the GNU Lesser General Public License version 2.1 as published
|
|
// by the Free Software Foundation, with special exception defined in the file
|
|
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
|
|
// distribution for complete text of the license and disclaimer of any warranty.
|
|
//
|
|
// Alternatively, this file may be used under the terms of Open CASCADE
|
|
// commercial license or contractual agreement.
|
|
|
|
#ifndef _math_Jacobi_HeaderFile
|
|
#define _math_Jacobi_HeaderFile
|
|
|
|
#include <Standard.hxx>
|
|
#include <Standard_DefineAlloc.hxx>
|
|
#include <Standard_Handle.hxx>
|
|
|
|
#include <Standard_Boolean.hxx>
|
|
#include <math_Matrix.hxx>
|
|
#include <Standard_Integer.hxx>
|
|
#include <math_Vector.hxx>
|
|
#include <Standard_Real.hxx>
|
|
#include <Standard_OStream.hxx>
|
|
class StdFail_NotDone;
|
|
class math_Matrix;
|
|
|
|
|
|
|
|
//! This class implements the Jacobi method to find the eigenvalues and
|
|
//! the eigenvectors of a real symmetric square matrix.
|
|
//! A sort of eigenvalues is done.
|
|
class math_Jacobi
|
|
{
|
|
public:
|
|
|
|
DEFINE_STANDARD_ALLOC
|
|
|
|
|
|
|
|
//! Given a Real n X n matrix A, this constructor computes all its
|
|
//! eigenvalues and eigenvectors using the Jacobi method.
|
|
//! The exception NotSquare is raised if the matrix is not square.
|
|
//! No verification that the matrix A is really symmetric is done.
|
|
Standard_EXPORT math_Jacobi(const math_Matrix& A);
|
|
|
|
//! Returns true if the computations are successful, otherwise returns false.
|
|
Standard_Boolean IsDone() const;
|
|
|
|
//! Returns the eigenvalues vector.
|
|
//! Exception NotDone is raised if calculation is not done successfully.
|
|
const math_Vector& Values() const;
|
|
|
|
//! returns the eigenvalue number Num.
|
|
//! Eigenvalues are in the range (1..n).
|
|
//! Exception NotDone is raised if calculation is not done successfully.
|
|
Standard_Real Value (const Standard_Integer Num) const;
|
|
|
|
//! returns the eigenvectors matrix.
|
|
//! Exception NotDone is raised if calculation is not done successfully.
|
|
const math_Matrix& Vectors() const;
|
|
|
|
//! Returns the eigenvector V of number Num.
|
|
//! Eigenvectors are in the range (1..n).
|
|
//! Exception NotDone is raised if calculation is not done successfully.
|
|
void Vector (const Standard_Integer Num, math_Vector& V) const;
|
|
|
|
//! Prints information on the current state of the object.
|
|
//! Is used to redefine the operator <<.
|
|
Standard_EXPORT void Dump (Standard_OStream& o) const;
|
|
|
|
|
|
|
|
|
|
protected:
|
|
|
|
|
|
|
|
|
|
|
|
private:
|
|
|
|
|
|
|
|
Standard_Boolean Done;
|
|
math_Matrix AA;
|
|
Standard_Integer NbRotations;
|
|
math_Vector EigenValues;
|
|
math_Matrix EigenVectors;
|
|
|
|
|
|
};
|
|
|
|
|
|
#include <math_Jacobi.lxx>
|
|
|
|
|
|
|
|
|
|
|
|
#endif // _math_Jacobi_HeaderFile
|