Campbell Barton
72c9141a7a
Also remove duplicate & mismatching comments from grease-pencil header. Keep comments close to implementation to avoid getting out of sync.
73 lines
2.1 KiB
C++
73 lines
2.1 KiB
C++
/*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is:
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* GXML/Graphite: Geometry and Graphics Programming Library + Utilities
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* Copyright (C) 2000 Bruno Levy
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* Contact: Bruno Levy
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* levy@loria.fr
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* ISA Project
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* LORIA, INRIA Lorraine,
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* Campus Scientifique, BP 239
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* 54506 VANDOEUVRE LES NANCY CEDEX
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* FRANCE
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*
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* Contributor(s): none yet.
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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#ifndef __MATRIX_UTIL__
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#define __MATRIX_UTIL__
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/** \file blender/freestyle/intern/geometry/matrix_util.h
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* \ingroup freestyle
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* \author Bruno Levy
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*/
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#include "../system/FreestyleConfig.h"
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namespace Freestyle {
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namespace OGF {
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namespace MatrixUtil {
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/**
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* computes the eigen values and eigen vectors of a semi definite symmetric matrix
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*
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* \param mat: The matrix stored in column symmetric storage, i.e.
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* matrix = { m11, m12, m22, m13, m23, m33, m14, m24, m34, m44 ... }
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* size = n(n+1)/2
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*
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* \param eigen_vec: (return) = { v1, v2, v3, ..., vn }
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* where vk = vk0, vk1, ..., vkn
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* size = n^2, must be allocated by caller
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*
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* \param eigen_val: (return) are in decreasing order
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* size = n, must be allocated by caller
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*/
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void semi_definite_symmetric_eigen(const double *mat, int n, double *eigen_vec, double *eigen_val);
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} // MatrixUtil namespace
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} // OGF namespace
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} /* namespace Freestyle */
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#endif // __MATRIX_UTIL__
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