/usr/include/getfem/getfem_mesh_im_level_set.h is in libgetfem++-dev 4.2.1~beta1~svn4635~dfsg-3+b1.
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/*===========================================================================
Copyright (C) 2005-2012 Yves Renard
This file is a part of GETFEM++
Getfem++ is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 3 of the License, or
(at your option) any later version along with the GCC Runtime Library
Exception either version 3.1 or (at your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License and GCC Runtime Library Exception for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
As a special exception, you may use this file as it is a part of a free
software library without restriction. Specifically, if other files
instantiate templates or use macros or inline functions from this file,
or you compile this file and link it with other files to produce an
executable, this file does not by itself cause the resulting executable
to be covered by the GNU Lesser General Public License. This exception
does not however invalidate any other reasons why the executable file
might be covered by the GNU Lesser General Public License.
===========================================================================*/
/**@file getfem_mesh_im_level_set.h
@author Yves Renard <Yves.Renard@insa-lyon.fr>
@date February 02, 2005.
@brief a subclass of mesh_im which is conformal to a number of level sets.
*/
#ifndef GETFEM_MESH_IM_LEVEL_SET_H__
#define GETFEM_MESH_IM_LEVEL_SET_H__
#include "getfem_mesh_im.h"
#include "getfem_mesh_level_set.h"
#include <set>
namespace getfem {
/**
Describe an adaptable integration method linked to a mesh cut by
a level set. It is possible to choose to integrate over the
whole mesh, or to select integration on the "inside" (the
intersection of the negative parts of the levelsets, or any other
union, intersection etc of the levelset negative parts), the
"outside", or just the levelset boundary.
*/
class mesh_im_level_set : public mesh_im {
protected :
pintegration_method regular_simplex_pim;
pintegration_method base_singular_pim;
mesh_level_set *mls;
mesh_im cut_im; /* stores an im only for convexes who are crossed
by a levelset */
dal::bit_vector ignored_im; /* convex list whose integration method is
ignored (for instance because
INTEGRATE_INSIDE and the convex
is outside etc.) */
std::vector<pintegration_method> build_methods;
mutable bool is_adapted;
int integrate_where; // INTEGRATE_INSIDE or INTEGRATE_OUTSIDE
void clear_build_methods();
void build_method_of_convex(size_type cv);
/* CSG (constructive solid geometry) description for the
definition of the domain with respect to one or more levelsets.
*/
std::string ls_csg_description;
public:
struct bool2 {
bool in; // true when the point in inside the levelsets
unsigned bin; /* 0 when the point is not on the boundary, and
(lsindex+1) when it is on the boundary of the
lsindex-th levelset */
};
protected:
/* return true when the point is inside the levelsets CSG
description */
bool2 is_point_in_selected_area
(const std::vector<mesher_level_set> &mesherls0,
const std::vector<mesher_level_set> &mesherls1, const base_node& P);
bool2 is_point_in_selected_area2
(const std::vector<mesher_level_set> &mesherls0,
const std::vector<mesher_level_set> &mesherls1, const base_node& P);
public :
enum { INTEGRATE_INSIDE = 1, INTEGRATE_OUTSIDE = 2, INTEGRATE_ALL = 2+1,
INTEGRATE_BOUNDARY = 4};
void update_from_context(void) const;
/** Apply the adequate integration methods. */
void adapt(void);
void clear(void); // to be modified
/** Set the specific integration methods. see the constructor
documentation for more details. */
void set_simplex_im(pintegration_method reg,
pintegration_method sing = 0) {
regular_simplex_pim = reg;
base_singular_pim = sing;
}
size_type memsize() const {
return mesh_im::memsize(); // + ... ;
}
void init_with_mls(mesh_level_set &me,
int integrate_where_ = INTEGRATE_ALL,
pintegration_method reg = 0,
pintegration_method sing = 0);
/**
@param me the level-set.
@param integrate_where : choose between INTEGRATE_ALL,
INTEGRATE_BOUNDARY, INTEGRATE_INSIDE and INTEGRATE_OUTSIDE.
@param reg the integration method (for simplices) that will be
used on the sub-simplices of convexes crossed by the levelset.
@param sing the (optional) integration method to use on the crack tips
(i.e. when the levelset has a secondary level set), this is
generally an IM_QUASI_POLAR method as it provides a good
integration of singular XFEM functions.
*/
mesh_im_level_set(mesh_level_set &me,
int integrate_where_ = INTEGRATE_ALL,
pintegration_method reg = 0,
pintegration_method sing = 0);
mesh_im_level_set(void);
virtual pintegration_method int_method_of_element(size_type cv)
const;
~mesh_im_level_set() { clear_build_methods(); }
/**
Set the boolean operation which define the integration domain
when there is more than one levelset.
the syntax is very simple, for example if there are 3 different
levelset,
"a*b*c" is the intersection of the domains defined by each
levelset (this is the default behaviour if this function is not
called).
"a+b+c" is the union of their domains.
"c-(a+b)" is the domain of the third levelset minus the union of
the domains of the two others.
"!a" is the complementary of the domain of a (i.e. it is the
domain where a(x)>0)
The first levelset is always referred to with "a", the second
with "b", and so on..
*/
void set_level_set_boolean_operations(const std::string description) {
ls_csg_description = description;
}
};
/**
Describe an adaptable integration method linked to a mesh cut by at
least two level sets on the intersection of two level sets.
*/
class mesh_im_cross_level_set : public mesh_im {
protected :
pintegration_method segment_pim;
mesh_level_set *mls;
mesh_im cut_im; /* stores an im only for convexes who are crossed
by a levelset */
dal::bit_vector ignored_im; /* convex list whose integration method is
ignored (for instance because
INTEGRATE_INSIDE and the convex
is outside etc.) */
std::vector<pintegration_method> build_methods;
mutable bool is_adapted;
size_type ind_ls1, ind_ls2;
void clear_build_methods();
void build_method_of_convex(size_type cv, mesh &global_intersection,
bgeot::rtree &rtree_seg);
public:
enum { INTEGRATE_INSIDE = 1, INTEGRATE_OUTSIDE = 2, INTEGRATE_ALL = 2+1,
INTEGRATE_BOUNDARY = 4};
void update_from_context(void) const;
/** Apply the adequate integration methods. */
void adapt(void);
void clear(void); // to be modified
/** Set the specific integration methods. see the constructor
documentation for more details. */
void set_segment_im(pintegration_method pim)
{ segment_pim = pim; }
size_type memsize() const {
return mesh_im::memsize(); // + ... ;
}
void init_with_mls(mesh_level_set &me,
size_type ind_ls1_, size_type ind_ls2_,
pintegration_method pim = 0);
mesh_im_cross_level_set(mesh_level_set &me,
size_type ind_ls1_, size_type ind_ls2_,
pintegration_method pim = 0);
mesh_im_cross_level_set(void);
virtual pintegration_method int_method_of_element(size_type cv)
const;
~mesh_im_cross_level_set() { clear_build_methods(); }
};
} /* end of namespace getfem. */
#endif /* GETFEM_MESH_IM_LEVEL_SET_H__ */
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