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Wrapper class for the FFTW type 'fftw_complex
'.
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#include <vigra/fftw3.hxx>
Public Types | |
typedef fftw_real const * | const_iterator |
typedef fftw_real const & | const_reference |
typedef fftw_real * | iterator |
typedef fftw_real | NormType |
typedef fftw_real & | reference |
typedef fftw_real | SquaredNormType |
typedef fftw_real | value_type |
Public Member Functions | |
template<class T > | |
FFTWComplex (TinyVector< T, 2 > const &o) | |
FFTWComplex (FFTWComplex const &o) | |
FFTWComplex (value_type const &re=0.0, value_type const &im=0.0) | |
FFTWComplex (fftw_complex const &o) | |
NormType | magnitude () const |
FFTWComplex | operator- () const |
FFTWComplex & | operator= (FFTWComplex const &o) |
template<class T > | |
FFTWComplex & | operator= (TinyVector< T, 2 > const &o) |
FFTWComplex & | operator= (fftw_complex const &o) |
FFTWComplex & | operator= (fftw_real const &o) |
const_reference | operator[] (int i) const |
reference | operator[] (int i) |
value_type | phase () const |
int | size () const |
SquaredNormType | squaredMagnitude () const |
Wrapper class for the FFTW type 'fftw_complex
'.
This class provides constructors and other member functions for the C struct 'fftw_complex
'. This struct is the basic pixel type of the FFTW Fast Fourier Transform library. It inherits the data members 're
' and 'im
' that denote the real and imaginary part of the number. In addition it defines transformations to polar coordinates, as well as arithmetic operators and accessors.
FFTWComplex implements the concepts AlgebraicField and DivisionAlgebra. The standard image types FFTWRealImage
and FFTWComplexImage
are defined.
See also:
#include <vigra/fftw3.hxx> (for FFTW 3) or
#include <vigra/fftw.hxx> (for deprecated FFTW 2)
Namespace: vigra
typedef fftw_real value_type |
The complex' component type, as defined in 'fftw3.h
'
typedef fftw_real& reference |
reference type (result of operator[])
typedef fftw_real const& const_reference |
const reference type (result of operator[] const)
typedef fftw_real* iterator |
iterator type (result of begin() )
typedef fftw_real const* const_iterator |
const iterator type (result of begin() const)
typedef fftw_real NormType |
The norm type (result of magnitde())
typedef fftw_real SquaredNormType |
The squared norm type (result of squaredMagnitde())
FFTWComplex | ( | value_type const & | re = 0.0 , |
value_type const & | im = 0.0 |
||
) |
Construct from real and imaginary part. Default: 0.
FFTWComplex | ( | FFTWComplex const & | o | ) |
Copy constructor.
FFTWComplex | ( | fftw_complex const & | o | ) |
Construct from plain fftw_complex
.
FFTWComplex | ( | TinyVector< T, 2 > const & | o | ) |
Construct from TinyVector.
FFTWComplex& operator= | ( | FFTWComplex const & | o | ) |
Assignment.
FFTWComplex& operator= | ( | fftw_complex const & | o | ) |
Assignment.
FFTWComplex& operator= | ( | fftw_real const & | o | ) |
Assignment.
FFTWComplex& operator= | ( | TinyVector< T, 2 > const & | o | ) |
Assignment.
FFTWComplex operator- | ( | ) | const |
Unary negation.
SquaredNormType squaredMagnitude | ( | ) | const |
Squared magnitude x*conj(x)
NormType magnitude | ( | ) | const |
Magnitude (length of radius vector).
value_type phase | ( | ) | const |
Phase angle.
reference operator[] | ( | int | i | ) |
Access components as if number were a vector.
const_reference operator[] | ( | int | i | ) | const |
Read components as if number were a vector.
int size | ( | ) | const |
Length of complex number (always 2).
© Ullrich Köthe (ullrich.koethe@iwr.uni-heidelberg.de) |
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