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vect3d.cpp
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Created
Thu, Dec 5, 04:24
Size
1 KB
Mime Type
text/x-c
Expires
Sat, Dec 7, 04:24 (1 d, 23 h)
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blob
Format
Raw Data
Handle
22752663
Attached To
rSYMKIT symkit
vect3d.cpp
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#include "vect3d.h"
#include <math.h>
Vector
&
operator
+=
(
Vector
&
v
,
const
Vector
&
w
)
{
for
(
int
i
=
0
;
i
<
3
;
++
i
)
v
[
i
]
+=
w
[
i
];
return
v
;
}
Vector
&
operator
-=
(
Vector
&
v
,
const
Vector
&
w
)
{
for
(
int
i
=
0
;
i
<
3
;
++
i
)
v
[
i
]
-=
w
[
i
];
return
v
;
}
Vector
&
operator
*=
(
Vector
&
v
,
double
k
)
{
for
(
int
i
=
0
;
i
<
3
;
++
i
)
v
[
i
]
*=
k
;
return
v
;
}
Vector
&
operator
/=
(
Vector
&
v
,
double
k
)
{
for
(
int
i
=
0
;
i
<
3
;
++
i
)
v
[
i
]
/=
k
;
return
v
;
}
Vector
operator
+
(
const
Vector
&
v
,
const
Vector
&
w
)
{
Vector
u
;
for
(
int
i
=
0
;
i
<
3
;
++
i
)
u
[
i
]
=
v
[
i
]
+
w
[
i
];
return
u
;
}
Vector
operator
-
(
const
Vector
&
v
,
const
Vector
&
w
)
{
Vector
u
;
for
(
int
i
=
0
;
i
<
3
;
++
i
)
u
[
i
]
=
v
[
i
]
-
w
[
i
];
return
u
;
}
Vector
operator
*
(
const
Vector
&
v
,
double
k
)
{
Vector
u
;
for
(
int
i
=
0
;
i
<
3
;
++
i
)
u
[
i
]
=
v
[
i
]
*
k
;
return
u
;
}
Vector
operator
/
(
const
Vector
&
v
,
double
k
)
{
Vector
u
;
for
(
int
i
=
0
;
i
<
3
;
++
i
)
u
[
i
]
=
v
[
i
]
/
k
;
return
u
;
}
/* cross product */
Vector
operator
^
(
const
Vector
&
v
,
const
Vector
&
w
)
{
Vector
u
;
u
[
0
]
=
v
[
1
]
*
w
[
2
]
-
v
[
2
]
*
w
[
1
];
u
[
1
]
=
v
[
2
]
*
w
[
0
]
-
v
[
0
]
*
w
[
2
];
u
[
2
]
=
v
[
0
]
*
w
[
1
]
-
v
[
1
]
*
w
[
0
];
return
u
;
}
/* dot product */
double
operator
*
(
const
Vector
&
v
,
const
Vector
&
w
)
{
double
x
=
0
;
for
(
int
i
=
0
;
i
<
3
;
++
i
)
x
+=
v
[
i
]
*
w
[
i
];
return
x
;
}
bool
operator
==
(
const
Vector
&
v
,
const
Vector
&
w
)
{
for
(
int
i
=
0
;
i
<
3
;
++
i
)
{
if
(
v
[
i
]
!=
w
[
i
])
return
false
;
}
return
true
;
}
bool
operator
!=
(
const
Vector
&
v
,
const
Vector
&
w
)
{
return
!
(
v
==
w
);
}
double
module
(
const
Vector
&
v
)
{
return
sqrt
(
sq_module
(
v
));
}
double
sq_module
(
const
Vector
&
v
)
{
double
x
=
0
;
for
(
int
i
=
0
;
i
<
3
;
++
i
)
x
+=
v
[
i
]
*
v
[
i
];
return
x
;
}
Vector
unit
(
const
Vector
&
v
)
{
return
v
/
module
(
v
);
}
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