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Two-component double-precision vector. More...
#include <openvrml/basetypes.h>
Public Member Functions | |
vec2d & | operator*= (double scalar) throw () |
Multiply by a scalar. | |
vec2d & | operator/= (double scalar) throw () |
Divide by a scalar. | |
vec2d & | operator+= (const vec2d &vec) throw () |
Add a vector. | |
vec2d & | operator-= (const vec2d &vec) throw () |
Subtract a vector. | |
const vec2d | operator- () const throw () |
Negate. | |
const double & | operator[] (std::size_t index) const throw () |
Index-based component access. | |
double | x () const throw () |
Get the x component. | |
void | x (double value) throw () |
Set the x component. | |
double | y () const throw () |
Get the y component. | |
void | y (double value) throw () |
Set the y component. | |
double | dot (const vec2d &vec) const throw () |
Dot product. | |
double | length () const throw () |
Geometric length. | |
const vec2d | normalize () const throw () |
Normalize. |
Public Attributes | |
double | vec [2] |
Vector components. |
Related Functions | |
(Note that these are not member functions.) | |
const openvrml::vec2d | make_vec2d () throw() |
Create a vec2d . | |
const openvrml::vec2d | make_vec2d (const double(&vec)[2]) throw() |
Create a vec2d from an array. | |
const openvrml::vec2d | make_vec2d (const double x, const double y) throw() |
Create a vec2d from x and y components. | |
const openvrml::vec2d | operator* (const vec2d &lhs, const double rhs) throw() |
Multiply a vector by a scalar. | |
const openvrml::vec2d | operator* (const double lhs, const vec2d &rhs) throw() |
Multiply a vector by a scalar. | |
const openvrml::vec2d | operator/ (const vec2d &lhs, const double rhs) throw() |
Divide a vector by a scalar. | |
const openvrml::vec2d | operator+ (const vec2d &lhs, const vec2d &rhs) throw() |
Add two vectors. | |
const openvrml::vec2d | operator- (const vec2d &lhs, const vec2d &rhs) throw() |
Subtract two vectors. | |
bool | operator== (const vec2d &lhs, const vec2d &rhs) throw() |
Compare for equality. | |
bool | operator!= (const vec2d &lhs, const vec2d &rhs) throw() |
Compare for inequality. | |
std::istream & | operator>> (std::istream &in, vec2d &v) |
Stream input. | |
std::ostream & | operator<< (std::ostream &out, const vec2d &v) |
Stream output. |
Two-component double-precision vector.
openvrml::vec2d & openvrml::vec2d::operator*= | ( | double | scalar | ) | throw () |
Multiply by a scalar.
[in] | scalar | factor by which to multiply. |
openvrml::vec2d & openvrml::vec2d::operator/= | ( | double | scalar | ) | throw () |
Divide by a scalar.
scalar
is nonzero.[in] | scalar | divisor. |
openvrml::vec2d & openvrml::vec2d::operator+= | ( | const vec2d & | vec | ) | throw () |
Add a vector.
[in] | vec | the vector to add. |
openvrml::vec2d & openvrml::vec2d::operator-= | ( | const vec2d & | vec | ) | throw () |
Subtract a vector.
[in] | vec | the vector to subtract. |
const openvrml::vec2d openvrml::vec2d::operator- | ( | ) | const throw () |
Negate.
|
inline |
Index-based component access.
[in] | index | 0 corresponds to the x component; 1 corresponds to the y component. |
index
.index
is less than 2.
|
inline |
Get the x component.
|
inline |
Set the x component.
value
is a valid numeric value (i.e., not NaN).[in] | value | new x component value. |
|
inline |
Get the y component.
|
inline |
Set the y component.
value
is a valid numeric value (i.e., not NaN).[in] | value | new y component value. |
double openvrml::vec2d::dot | ( | const vec2d & | vec | ) | const throw () |
Dot product.
[in] | vec |
vec
. double openvrml::vec2d::length | ( | ) | const throw () |
Geometric length.
const openvrml::vec2d openvrml::vec2d::normalize | ( | ) | const throw () |
Normalize.
|
related |
|
related |
Create a vec2d
from an array.
This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
vec
are valid numeric values (i.e., not NaN).[in] | vec | an array comprising the vector components. |
vec2d
with the values in vec
.
|
related |
Create a vec2d
from x
and y
components.
This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
x
and y
are valid numeric values (i.e., not NaN).[in] | x | x component. |
[in] | y | y component. |
vec2d
with the values x
and y
.
|
related |
Multiply a vector by a scalar.
[in] | lhs | left-hand operand (the vector). |
[in] | rhs | right-hand operand (the scalar). |
|
related |
Multiply a vector by a scalar.
[in] | lhs | left-hand operand (the scalar). |
[in] | rhs | right-hand operand (the vector). |
|
related |
Divide a vector by a scalar.
rhs
is nonzero.[in] | lhs | left-hand operand (the vector). |
[in] | rhs | right-hand operand (the scalar). |
|
related |
Add two vectors.
[in] | lhs | left-hand operand. |
[in] | rhs | right-hand operand. |
|
related |
Subtract two vectors.
[in] | lhs | left-hand operand. |
[in] | rhs | right-hand operand. |
Compare for equality.
[in] | lhs | left-hand operand. |
[in] | rhs | right-hand operand. |
true
if lhs
and rhs
have the same value; false
otherwise. Compare for inequality.
[in] | lhs | left-hand operand. |
[in] | rhs | right-hand operand. |
true
if lhs
and rhs
dot not have the same value; false
otherwise.
|
related |
Stream input.
Consistent with the VRML97 convention, commas (“,”) in the input are treated as whitespace.
[in,out] | in | input stream. |
[out] | v | a vec2d . |
in
.
|
related |
Stream output.
[in,out] | out | output stream. |
[in] | v | a 2-component vector. |
out
. double openvrml::vec2d::vec[2] |
Vector components.