nganlafortune< CONF, NAME > Class Template Reference

Ngan's Lafortune: standard Lafortune times an additional normalization factor: More...

#include <ngan.h>

Inherits lafortune< CONF, symmetry_v::Isotropic >.

Public Member Functions
	BBM_IMPORT_CONFIG (CONF)
Spectrum	eval (const Vec3d &in, const Vec3d &out, BsdfFlag component=bsdf_flag::All, unit_t unit=unit_t::Radiance, Mask mask=true) const
	Evaluate the BSDF for a given in and out direction.
Spectrum	reflectance (const Vec3d &out, BsdfFlag component=bsdf_flag::All, unit_t unit=unit_t::Radiance, Mask mask=true) const
	Return the (approximate) reflectance of the BSDF.
	BBM_DEFAULT_CONSTRUCTOR (nganlafortune)
	Default constructor.
Public Member Functions inherited from lafortune< CONF, symmetry_v::Isotropic >
	BBM_IMPORT_CONFIG (CONF)
Spectrum	eval (const Vec3d &in, const Vec3d &out, BsdfFlag component=bsdf_flag::All, unit_t=unit_t::Radiance, Mask mask=true) const
	Evaluate the BSDF for a given in and out direction.
BsdfSample	sample (const Vec3d &out, const Vec2d &xi, BsdfFlag component=bsdf_flag::All, unit_t unit=unit_t::Radiance, Mask mask=true) const
	Sample the BSDF given a direction and two random variables.
Value	pdf (const Vec3d &in, const Vec3d &out, BsdfFlag component=bsdf_flag::All, unit_t=unit_t::Radiance, Mask mask=true) const
	Compute the pdf given an in and out direction.
Spectrum	reflectance (const Vec3d &out, BsdfFlag component=bsdf_flag::All, unit_t=unit_t::Radiance, Mask mask=true) const
	Return the (approximate) hemispherical reflectance of the BSDF.
	BBM_DEFAULT_CONSTRUCTOR (lafortune)
	Default constructor.
	BBM_ATTRIBUTES (albedo, Cxy, Cz, sharpness)

Public Attributes
	BBM_BSDF_FORWARD
Public Attributes inherited from lafortune< CONF, symmetry_v::Isotropic >
	BBM_BSDF_FORWARD
specular_scale< Spectrum >	albedo
	Class Attributes.
bsdf_parameter< symmetry_t< Symmetry, Value >, bsdf_attr::SpecularParameter, -0.57735026919, std::numeric_limits< Scalar >::max(), std::numeric_limits< Scalar >::min()>	Cxy
bsdf_parameter< Value, bsdf_attr::SpecularParameter, 0.57735026919, std::numeric_limits< Scalar >::max(), std::numeric_limits< Scalar >::min()>	Cz
specular_sharpness< Value >	sharpness

Static Public Attributes
static constexpr string_literal	name = NAME
Static Public Attributes inherited from lafortune< CONF, symmetry_v::Isotropic >
static constexpr string_literal	name

Private Types
using	base = lafortune< CONF, symmetry_v::Isotropic >

Private Member Functions
	BBM_BASETYPES (base)

Detailed Description

template<typename CONF, string_literal NAME = "NganLafortune">
requires concepts::config<CONF>
class bbm::nganlafortune< CONF, NAME >

Ngan's Lafortune: standard Lafortune times an additional normalization factor:

\( \frac{ (n+2) }{ \2pi * (\max(Cz, Cxy))^n } \)

This is achieved with a wrapper class.

Member Typedef Documentation

base

using base = lafortune<CONF, symmetry_v::Isotropic>

private

Member Function Documentation

BBM_BASETYPES()

BBM_BASETYPES ( base  )

private

BBM_DEFAULT_CONSTRUCTOR()

BBM_DEFAULT_CONSTRUCTOR ( nganlafortune< CONF, NAME >  )

inline

Default constructor.

BBM_IMPORT_CONFIG()

BBM_IMPORT_CONFIG

(

CONF

)

eval()

Spectrum eval ( const Vec3d &  in, const Vec3d &  out, BsdfFlag  component = bsdf_flag::All, unit_t  unit = unit_t::Radiance, Mask  mask = true  ) const

inline

Evaluate the BSDF for a given in and out direction.

Parameters

in	= incident direction
out	= outgoing direction
component	= which reflectance component to eval
unit	= unit of computation (ignored)
mask	= masking of lanes (e.g., for Packet eval)

Returns

Evaluation of the BSDF per spectrum.

reflectance()

Spectrum reflectance ( const Vec3d &  out, BsdfFlag  component = bsdf_flag::All, unit_t  unit = unit_t::Radiance, Mask  mask = true  ) const

inline

Return the (approximate) reflectance of the BSDF.

Parameters

out	= the outgoing direction
component	= which reflectance component to eval
unit	= unit of computation (ignored)
mask	= masking of lanes

Returns

the approximate reflectance of the BSDF for a given direction

Member Data Documentation

BBM_BSDF_FORWARD

BBM_BSDF_FORWARD

name

constexpr string_literal name = NAME

staticconstexpr

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The documentation for this class was generated from the following file:

• include/bsdfmodel/ngan.h