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manifold_cylinder_dent.cpp
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Created
Tue, Jul 30, 00:38
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983 B
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text/x-c
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Thu, Aug 1, 00:38 (2 d)
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blob
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rLAMMPS lammps
manifold_cylinder_dent.cpp
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#include "manifold_cylinder_dent.h"
#include "math_const.h"
#include <math.h>
using
namespace
LAMMPS_NS
;
using
namespace
user_manifold
;
manifold_cylinder_dent
::
manifold_cylinder_dent
(
LAMMPS
*
lmp
,
int
argc
,
char
**
argv
)
:
manifold
(
lmp
)
{}
double
manifold_cylinder_dent
::
g
(
const
double
*
x
)
{
double
l
=
params
[
1
],
R
=
params
[
0
],
a
=
params
[
2
];
double
r2
=
x
[
1
]
*
x
[
1
]
+
x
[
0
]
*
x
[
0
];
if
(
fabs
(
x
[
2
])
<
0.5
*
l
){
double
k
=
MathConst
::
MY_2PI
/
l
;
double
c
=
R
-
0.5
*
a
*
(
1.0
+
cos
(
k
*
x
[
2
])
);
return
c
*
c
-
r2
;
}
else
{
return
R
*
R
-
r2
;
}
}
void
manifold_cylinder_dent
::
n
(
const
double
*
x
,
double
*
n
)
{
double
l
=
params
[
1
],
R
=
params
[
0
],
a
=
params
[
2
];
if
(
fabs
(
x
[
2
])
<
0.5
*
l
){
double
k
=
MathConst
::
MY_2PI
/
l
;
double
c
=
R
-
0.5
*
a
*
(
1.0
+
cos
(
k
*
x
[
2
]));
n
[
0
]
=
-
2
*
x
[
0
];
n
[
1
]
=
-
2
*
x
[
1
];
n
[
2
]
=
c
*
a
*
k
*
sin
(
k
*
x
[
2
]);
}
else
{
n
[
0
]
=
-
2
*
x
[
0
];
n
[
1
]
=
-
2
*
x
[
1
];
n
[
2
]
=
0.0
;
}
}
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