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rAKA akantu
mesh_geom_factory_tmpl.hh
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/**
* @file mesh_geom_factory_tmpl.hh
*
* @author Lucas Frerot <lucas.frerot@epfl.ch>
* @author Clement Roux <clement.roux@epfl.ch>
* @author Marco Vocialta <marco.vocialta@epfl.ch>
*
* @date creation: Fri Feb 27 2015
* @date last modification: Wed Jan 31 2018
*
* @brief Class for constructing the CGAL primitives of a mesh
*
*
* Copyright (©) 2015-2018 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* Akantu 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.
*
* Akantu 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 for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Akantu. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#include "mesh_geom_common.hh"
#include "mesh_geom_factory.hh"
/* -------------------------------------------------------------------------- */
#ifndef AKANTU_MESH_GEOM_FACTORY_TMPL_HH_
#define AKANTU_MESH_GEOM_FACTORY_TMPL_HH_
namespace
akantu
{
/* -------------------------------------------------------------------------- */
template
<
UInt
dim
,
ElementType
type
,
class
Primitive
,
class
Kernel
>
MeshGeomFactory
<
dim
,
type
,
Primitive
,
Kernel
>::
MeshGeomFactory
(
Mesh
&
mesh
)
:
MeshGeomAbstract
(
mesh
)
{}
/* -------------------------------------------------------------------------- */
template
<
UInt
dim
,
ElementType
type
,
class
Primitive
,
class
Kernel
>
MeshGeomFactory
<
dim
,
type
,
Primitive
,
Kernel
>::~
MeshGeomFactory
()
{
delete
data_tree
;
}
/* -------------------------------------------------------------------------- */
/**
* This function loops over the elements of `type` in the mesh and creates the
* AABB tree of geometrical primitves (`data_tree`).
*/
template
<
UInt
dim
,
ElementType
type
,
class
Primitive
,
class
Kernel
>
void
MeshGeomFactory
<
dim
,
type
,
Primitive
,
Kernel
>::
constructData
(
GhostType
ghost_type
)
{
AKANTU_DEBUG_IN
();
primitive_list
.
clear
();
UInt
nb_nodes_per_element
=
mesh
.
getNbNodesPerElement
(
type
);
const
Array
<
UInt
>
&
connectivity
=
mesh
.
getConnectivity
(
type
,
ghost_type
);
const
Array
<
Real
>
&
nodes
=
mesh
.
getNodes
();
UInt
el_index
=
0
;
auto
it
=
connectivity
.
begin
(
nb_nodes_per_element
);
auto
end
=
connectivity
.
end
(
nb_nodes_per_element
);
Matrix
<
Real
>
node_coordinates
(
dim
,
nb_nodes_per_element
);
// This loop builds the list of primitives
for
(;
it
!=
end
;
++
it
,
++
el_index
)
{
const
Vector
<
UInt
>
&
el_connectivity
=
*
it
;
for
(
UInt
i
=
0
;
i
<
nb_nodes_per_element
;
i
++
)
{
for
(
UInt
j
=
0
;
j
<
dim
;
j
++
)
{
node_coordinates
(
j
,
i
)
=
nodes
(
el_connectivity
(
i
),
j
);
}
}
// the unique elemental id assigned to the primitive is the
// linearized element index over ghost type
addPrimitive
(
node_coordinates
,
el_index
);
}
delete
data_tree
;
// This condition allows the use of the mesh geom module
// even if types are not compatible with AABB tree algorithm
if
(
TreeTypeHelper_
::
is_valid
)
{
data_tree
=
new
TreeType
(
primitive_list
.
begin
(),
primitive_list
.
end
());
}
AKANTU_DEBUG_OUT
();
}
/* -------------------------------------------------------------------------- */
/* -------------------------------------------------------------------------- */
namespace
{
namespace
details
{
enum
class
GeometricalType
{
_triangle
,
_tetrahedron
,
};
template
<
ElementType
element_type
>
struct
GeometricalTypeHelper
{};
template
<>
struct
GeometricalTypeHelper
<
_triangle_3
>
{
static
const
GeometricalType
type
{
GeometricalType
::
_triangle
};
};
template
<>
struct
GeometricalTypeHelper
<
_triangle_6
>
{
static
const
GeometricalType
type
{
GeometricalType
::
_triangle
};
};
template
<>
struct
GeometricalTypeHelper
<
_tetrahedron_4
>
{
static
const
GeometricalType
type
{
GeometricalType
::
_triangle
};
};
#if defined(AKANTU_IGFEM)
template
<>
struct
GeometricalTypeHelper
<
_igfem_triangle_4
>
{
static
const
GeometricalType
type
{
GeometricalType
::
_triangle
};
};
template
<>
struct
GeometricalTypeHelper
<
_igfem_triangle_5
>
{
static
const
GeometricalType
type
{
GeometricalType
::
_triangle
};
};
#endif
template
<
details
::
GeometricalType
geom_type
,
class
Primitive
,
class
Kernel
>
struct
AddPrimitiveHelper
{};
template
<
class
Primitive
>
struct
AddPrimitiveHelper
<
GeometricalType
::
_triangle
,
Primitive
,
cgal
::
Cartesian
>
{
using
TreeTypeHelper_
=
TreeTypeHelper
<
Primitive
,
cgal
::
Cartesian
>
;
using
ContainerType
=
typename
TreeTypeHelper_
::
container_type
;
static
void
addPrimitive
(
const
Matrix
<
Real
>
&
node_coordinates
,
UInt
id
,
ContainerType
&
list
)
{
using
Point
=
typename
TreeTypeHelper_
::
point_type
;
Point
a
(
node_coordinates
(
0
,
0
),
node_coordinates
(
1
,
0
),
0.
);
Point
b
(
node_coordinates
(
0
,
1
),
node_coordinates
(
1
,
1
),
0.
);
Point
c
(
node_coordinates
(
0
,
2
),
node_coordinates
(
1
,
2
),
0.
);
Triangle
<
cgal
::
Cartesian
>
t
(
a
,
b
,
c
);
t
.
setId
(
id
);
list
.
push_back
(
t
);
}
};
template
<
class
Primitive
>
struct
AddPrimitiveHelper
<
GeometricalType
::
_triangle
,
Primitive
,
cgal
::
Spherical
>
{
using
TreeTypeHelper_
=
TreeTypeHelper
<
Primitive
,
cgal
::
Spherical
>
;
using
ContainerType
=
typename
TreeTypeHelper_
::
container_type
;
static
void
addPrimitive
(
const
Matrix
<
Real
>
&
node_coordinates
,
UInt
id
,
ContainerType
&
list
)
{
using
Point
=
typename
TreeTypeHelper_
::
point_type
;
Point
a
(
node_coordinates
(
0
,
0
),
node_coordinates
(
1
,
0
),
0.
);
Point
b
(
node_coordinates
(
0
,
1
),
node_coordinates
(
1
,
1
),
0.
);
Point
c
(
node_coordinates
(
0
,
2
),
node_coordinates
(
1
,
2
),
0.
);
using
Line
=
CGAL
::
Line_3
<
cgal
::
Spherical
>
;
Line
l1
(
a
,
b
);
Line
l2
(
b
,
c
);
Line
l3
(
c
,
a
);
using
Arc
=
Line_arc
<
cgal
::
Spherical
>
;
Arc
s1
(
l1
,
a
,
b
);
Arc
s2
(
l2
,
b
,
c
);
Arc
s3
(
l3
,
c
,
a
);
s1
.
setId
(
id
);
s1
.
setSegId
(
0
);
s2
.
setId
(
id
);
s2
.
setSegId
(
1
);
s3
.
setId
(
id
);
s3
.
setSegId
(
2
);
list
.
push_back
(
s1
);
list
.
push_back
(
s2
);
list
.
push_back
(
s3
);
}
};
template
<
class
Primitive
>
struct
AddPrimitiveHelper
<
GeometricalType
::
_tetrahedron
,
Primitive
,
cgal
::
Cartesian
>
{
using
TreeTypeHelper_
=
TreeTypeHelper
<
Primitive
,
cgal
::
Cartesian
>
;
using
ContainerType
=
typename
TreeTypeHelper_
::
container_type
;
static
void
addPrimitive
(
const
Matrix
<
Real
>
&
node_coordinates
,
UInt
id
,
ContainerType
&
list
)
{
using
Point
=
typename
TreeTypeHelper_
::
point_type
;
Point
a
(
node_coordinates
(
0
,
0
),
node_coordinates
(
1
,
0
),
node_coordinates
(
2
,
0
));
Point
b
(
node_coordinates
(
0
,
1
),
node_coordinates
(
1
,
1
),
node_coordinates
(
2
,
1
));
Point
c
(
node_coordinates
(
0
,
2
),
node_coordinates
(
1
,
2
),
node_coordinates
(
2
,
2
));
Point
d
(
node_coordinates
(
0
,
3
),
node_coordinates
(
1
,
3
),
node_coordinates
(
2
,
3
));
Triangle
<
cgal
::
Cartesian
>
t1
(
a
,
b
,
c
);
Triangle
<
cgal
::
Cartesian
>
t2
(
b
,
c
,
d
);
Triangle
<
cgal
::
Cartesian
>
t3
(
c
,
d
,
a
);
Triangle
<
cgal
::
Cartesian
>
t4
(
d
,
a
,
b
);
t1
.
setId
(
id
);
t2
.
setId
(
id
);
t3
.
setId
(
id
);
t4
.
setId
(
id
);
list
.
push_back
(
t1
);
list
.
push_back
(
t2
);
list
.
push_back
(
t3
);
list
.
push_back
(
t4
);
}
};
}
// namespace details
}
// namespace
/* -------------------------------------------------------------------------- */
template
<
UInt
dim
,
ElementType
type
,
class
Primitive
,
class
Kernel
>
void
MeshGeomFactory
<
dim
,
type
,
Primitive
,
Kernel
>::
addPrimitive
(
const
Matrix
<
Real
>
&
node_coordinates
,
UInt
id
,
ContainerType
&
list
)
{
details
::
AddPrimitiveHelper
<
details
::
GeometricalTypeHelper
<
type
>::
type
,
Primitive
,
Kernel
>::
addPrimitive
(
node_coordinates
,
id
,
list
);
}
/* -------------------------------------------------------------------------- */
template
<
UInt
dim
,
ElementType
type
,
class
Primitive
,
class
Kernel
>
void
MeshGeomFactory
<
dim
,
type
,
Primitive
,
Kernel
>::
addPrimitive
(
const
Matrix
<
Real
>
&
node_coordinates
,
UInt
id
)
{
this
->
addPrimitive
(
node_coordinates
,
id
,
this
->
primitive_list
);
}
}
// namespace akantu
#endif
// AKANTU_MESH_GEOM_FACTORY_TMPL_HH_
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