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contact_area.cpp
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Wed, Oct 9, 04:44
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rTAMAAS tamaas
contact_area.cpp
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/**
*
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
*
* @section LICENSE
*
* Copyright (©) 2016 EPFL (Ecole Polytechnique Fédérale de
* Lausanne) Laboratory (LSMS - Laboratoire de Simulation en Mécanique des
* Solides)
*
* Tamaas 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.
*
* Tamaas 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 Tamaas. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#include"contact_area.hh"
#include <iostream>
#include "cluster_grow.hh"
/* -------------------------------------------------------------------------- */
__BEGIN_TAMAAS__
ContactArea
::
ContactArea
(
UInt
n
,
Real
L
)
:
Surface
<
int
>
(
n
,
L
)
{
//num_cluster = 0;
}
/* -------------------------------------------------------------------------- */
template
<>
ContactArea
::
ContactArea
(
const
Map2dSquare
<
Real
>
&
m
)
:
Surface
<
int
>
(
m
.
size
(),
m
.
getL
()){
UInt
n
=
this
->
size
();
for
(
UInt
i
=
0
;
i
<
n
*
n
;
++
i
)
this
->
at
(
i
)
=
(
m
(
i
)
>
0.
);
}
/* -------------------------------------------------------------------------- */
ContactArea
::~
ContactArea
()
{}
/* -------------------------------------------------------------------------- */
void
ContactArea
::
detectContactClusters
()
{
// starting state was push as 2 by vlad
ClusterGrow
clg
(
*
this
,
2
);
UInt
N
=
this
->
size
();
for
(
UInt
i
=
0
;
i
<
N
;
++
i
)
{
for
(
UInt
j
=
0
;
j
<
N
;
++
j
)
{
clg
.
grow
<
true
>
(
i
,
j
);
}
}
for
(
UInt
i
=
0
;
i
<
N
;
++
i
)
{
for
(
UInt
j
=
0
;
j
<
N
;
++
j
)
{
if
(
this
->
at
(
i
,
j
)
==
-
1
)
SURFACE_FATAL
(
"problem "
<<
i
<<
" "
<<
j
<<
" is -1"
);
}
}
for
(
UInt
i
=
0
;
i
<
clg
.
getNbClusters
();
++
i
)
colors
.
push_back
(
i
+
3
);
}
/* -------------------------------------------------------------------------- */
void
ContactArea
::
replaceColors
(
int
from
,
int
to
)
{
// Repalce color "from" by the color "to"
UInt
n
=
this
->
size
();
for
(
UInt
i
=
0
;
i
<
n
;
i
++
)
for
(
UInt
j
=
0
;
j
<
n
;
j
++
)
if
(
this
->
at
(
i
,
j
)
==
from
)
this
->
at
(
i
,
j
)
=
to
;
}
/* -------------------------------------------------------------------------- */
void
ContactArea
::
randomizeClusterID
(
UInt
seed
)
{
std
::
cout
<<
"/ Randomize colors of contact clusters."
<<
std
::
endl
;
UInt
shift
=
1000
,
tryid
;
bool
found
;
std
::
vector
<
UInt
>
cid
;
UInt
num_cluster
=
colors
.
size
();
cid
.
resize
(
num_cluster
);
while
(
shift
<
num_cluster
)
shift
*=
10
;
srand
(
seed
);
for
(
int
i
=
0
;
i
<
int
(
colors
.
size
());
i
++
)
{
tryid
=-
1
;
do
{
tryid
=
shift
+
int
((
num_cluster
+
10
)
*
random
()
/
Real
(
RAND_MAX
));
found
=
true
;
for
(
int
j
=
0
;
j
<
i
;
j
++
)
if
(
cid
[
j
]
==
tryid
)
found
=
false
;
}
while
(
!
found
);
cid
[
i
]
=
tryid
;
replaceColors
(
colors
[
i
],
tryid
);
colors
[
i
]
=
tryid
;
}
// Shift all colors back to 1
for
(
int
i
=
0
;
i
<
int
(
colors
.
size
());
i
++
)
{
replaceColors
(
colors
[
i
],
colors
[
i
]
-
shift
+
1
);
colors
[
i
]
-=
shift
-
1
;
}
}
/* -------------------------------------------------------------------------- */
std
::
vector
<
ContactCluster
>
ContactArea
::
getContactClusters
()
{
std
::
vector
<
ContactCluster
>
clusters
;
UInt
nb_colors
=
this
->
colors
.
size
();
for
(
UInt
i
=
0
;
i
<
nb_colors
;
i
++
)
{
// std::cout << "Extracting contact cluster " << i << std::endl;
ContactCluster
c
(
colors
[
i
],
*
this
);
//std::cout << "Compute statistics of contact cluster " << i << std::endl;
c
.
computeStatistics
();
clusters
.
push_back
(
c
);
}
return
clusters
;
}
/* -------------------------------------------------------------------------- */
__END_TAMAAS__
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