blackbody spectrum

class blackbody_t : public wt::spectrum::spectrum_real_t

Blackbody spectrum. Underneath, uses a tightly-sampled piece-wise linear distribution, enabling sampling support.

Public Functions

blackbody_t(std::string id, const temperature_t T, const range_t<wavelength_t> &wl_range, const f_t scale)

blackbody_t(const blackbody_t&) = default

blackbody_t(blackbody_t&&) = default

inline auto temperature() const noexcept

Temperature in Kelvin of the blackbody radiator.

inline auto locus_XYZ() const noexcept

Computes the Planckian locus in XYZ colourspace, i.e. the colour of a blackbody radiator.

Returns:

vec3_t XYZ tristimulus colour

inline virtual const distribution1d_t *distribution() const noexcept override

Returns the underlying spectrum distribution.

inline virtual f_t power() const noexcept override

Returns the total spectral power contained in this spectrum.

inline virtual f_t power(const range_t<wavenumber_t> &wavenumbers) const noexcept override

Returns the spectral power over the provided wavenumber range.

inline virtual range_t<wavenumber_t> wavenumber_range() const noexcept override

Returns the range of wavenumbers for which this spectrum is defined. Querying the spectrum with wavenumber<range.min or wavenumber>range.max will always be 0.

inline virtual wavenumber_t mean_wavenumber() const noexcept override

Returns the mean wavenumber for this spectrum.

inline virtual f_t f(const wavenumber_t wavenumber) const noexcept override

Query the spectrum. Returns the spectral power for the given wavenumber ‘wavenumber’.

virtual scene::element::info_t description() const override

Public Static Functions

static std::unique_ptr<spectrum_real_t> load(std::string id, scene::loader::loader_t *loader, const scene::loader::node_t &node, const wt::wt_context_t &context)