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mi::math::Spectrum Class Reference

Spectrum with floating point elements and operations. More...

Inheritance diagram for mi::math::Spectrum:
Inheritance graph
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Public Types

typedef Spectrum_struct  Pod_type
  POD class corresponding to this spectrum. More...
 
typedef Spectrum_struct  storage_type
  Storage class used by this spectrum. More...
 
typedef Float32  value_type
  Element type. More...
 
typedef Size  size_type
  Size type, unsigned. More...
 
typedef Difference  difference_type
  Difference type, signed. More...
 
typedef Float32 pointer
  Mutable pointer to element. More...
 
typedef const Float32 const_pointer
  Const pointer to element. More...
 
typedef Float32 reference
  Mutable reference to element. More...
 
typedef const Float32 const_reference
  Const reference to element. More...
 

Public Member Functions

Float32 begin ()
  Returns the pointer to the first spectrum element. More...
 
const Float32 begin () const
  Returns the pointer to the first spectrum element. More...
 
Float32 end ()
  Returns the past-the-end pointer. More...
 
const Float32 end () const
  Returns the past-the-end pointer. More...
 
  Spectrum ()
  The default constructor leaves the spectrum elements uninitialized. More...
 
  Spectrum (const Spectrum_struct &s)
  Constructor from underlying storage type. More...
 
  Spectrum (const Float32 s)
  Constructor initializes all vector elements to the value s. More...
 
  Spectrum (Float32 nr, Float32 ng, Float32 nb)
  Constructor initializes (r,g,b) from (nr,ng,nb). More...
 
  Spectrum (const Vector< Float32, 3 > &v3)
  Conversion from Vector<Float32,3>. More...
 
  Spectrum (const Vector< Float32, 4 > &v4)
  Conversion from Vector<Float32,4>. More...
 
  Spectrum (const Color &col)
  Conversion from Color. More...
 
Vector< Float32, 3 >  to_vector3 () const
  Conversion to Vector<Float32,3>. More...
 
Vector< Float32, 4 >  to_vector4 () const
  Conversion to Vector<Float32,4>. More...
 
Spectrum operator= (const Spectrum &s)
  Assignment operator. More...
 
const Float32 operator[] (Size i) const
  Accesses the i-th spectrum element, 0 <= i < 3. More...
 
Float32 operator[] (Size i)
  Accesses the i-th spectrum element, 0 <= i < 3. More...
 
Float32  get (Size i) const
  Returns the i-th spectrum element, 0 <= i < 3. More...
 
void  set (Size i, Float32 value)
  Sets the i-th spectrum element to value, 0 <= i < 3. More...
 
bool  is_black () const
  Returns true if the spectrum is black ignoring the alpha value. More...
 
Float32  linear_intensity () const
  Returns the intensity of the RGB components, equally weighted. More...
 

Static Public Member Functions

static Size  size ()
  Constant size of the spectrum. More...
 
static Size  max_size ()
  Constant maximum size of the spectrum. More...
 

Public Attributes

Float32  c [3]
  Three color bands. More...
 

Static Public Attributes

static const Size  SIZE = 3
  Constant size of the spectrum. More...
 

Detailed Description

Spectrum with floating point elements and operations.

Note
This class will most likely change in the future, since currently it uses only three components. Therefore it behaves almost identical to the Color class, apart from the missing alpha component. Future implementations will probably contain a lot more bands or might have a completely different internal structure.

The spectrum class is a model of the STL container concept. It provides random access to its elements and corresponding random access iterators.

See Also
For the free functions and operators available for spectra see Spectrum Class.
Include File:
#include <mi/math/spectrum.h>

Member Typedef Documentation

Const pointer to element.

Const reference to element.

Difference type, signed.

POD class corresponding to this spectrum.

Mutable pointer to element.

Mutable reference to element.

Size type, unsigned.

Storage class used by this spectrum.

Element type.

Constructor & Destructor Documentation

mi::math::Spectrum::Spectrum ( )
inline

The default constructor leaves the spectrum elements uninitialized.

mi::math::Spectrum::Spectrum ( const Spectrum_struct s)
inline

Constructor from underlying storage type.

mi::math::Spectrum::Spectrum ( const Float32  s)
inlineexplicit

Constructor initializes all vector elements to the value s.

mi::math::Spectrum::Spectrum ( Float32  nr,
Float32  ng,
Float32  nb 
)
inline

Constructor initializes (r,g,b) from (nr,ng,nb).

mi::math::Spectrum::Spectrum ( const Vector< Float32, 3 > &  v3)
inlineexplicit

Conversion from Vector<Float32,3>.

mi::math::Spectrum::Spectrum ( const Vector< Float32, 4 > &  v4)
inlineexplicit

Conversion from Vector<Float32,4>.

mi::math::Spectrum::Spectrum ( const Color col)
inlineexplicit

Conversion from Color.

Member Function Documentation

Float32* mi::math::Spectrum::begin ( )
inline

Returns the pointer to the first spectrum element.

const Float32* mi::math::Spectrum::begin ( ) const
inline

Returns the pointer to the first spectrum element.

Float32* mi::math::Spectrum::end ( )
inline

Returns the past-the-end pointer.

The range [begin(),end()) forms the range over all spectrum elements.

const Float32* mi::math::Spectrum::end ( ) const
inline

Returns the past-the-end pointer.

The range [begin(),end()) forms the range over all spectrum elements.

Float32 mi::math::Spectrum::get ( Size  i) const
inline

Returns the i-th spectrum element, 0 <= i < 3.

bool mi::math::Spectrum::is_black ( ) const
inline

Returns true if the spectrum is black ignoring the alpha value.

Float32 mi::math::Spectrum::linear_intensity ( ) const
inline

Returns the intensity of the RGB components, equally weighted.

static Size mi::math::Spectrum::max_size ( )
inlinestatic

Constant maximum size of the spectrum.

Spectrum& mi::math::Spectrum::operator= ( const Spectrum s)
inline

Assignment operator.

const Float32& mi::math::Spectrum::operator[] ( Size  i) const
inline

Accesses the i-th spectrum element, 0 <= i < 3.

Float32& mi::math::Spectrum::operator[] ( Size  i)
inline

Accesses the i-th spectrum element, 0 <= i < 3.

void mi::math::Spectrum::set ( Size  i,
Float32  value 
)
inline

Sets the i-th spectrum element to value, 0 <= i < 3.

static Size mi::math::Spectrum::size ( )
inlinestatic

Constant size of the spectrum.

Vector<Float32,3> mi::math::Spectrum::to_vector3 ( ) const
inline

Conversion to Vector<Float32,3>.

Vector<Float32,4> mi::math::Spectrum::to_vector4 ( ) const
inline

Conversion to Vector<Float32,4>.

Member Data Documentation

Float32 mi::math::Spectrum_struct::c[3]
inherited

Three color bands.

const Size mi::math::Spectrum::SIZE = 3
static

Constant size of the spectrum.