C# Class TestMSBSDF.LobeModel

Inheritance: WMath.BFGS.Model

Public Methods

Method	Description
Constrain ( double _Parameters ) : void
Eval ( double _newParameters ) : double
HistogramTexture2Array ( Texture2D _texHistogram_CPU, int _scatteringOrder ) : ].double[	Reads back a lobe texture histogram into an array
InitLobeData ( LOBE_TYPE _lobeType, float3 _incomingDirection, double _theta, double _roughness, double _scale, double _flatteningFactor, double _maskingImportance, double _oversizeFactor, bool _fitUsingCenterOfMass ) : void	Initialize the lobe model parameters
InitTargetData ( double _histogramData ) : void	Initializes the array of data we need to fit with the lobe model Computes the Center of Mass of the lobe
LobeModel ( ) : System
SetConstraint ( int _parameterIndex, double _min, double _max ) : void	Sets the contraints for each parameter

Method	Description
BeckmannG1 ( double _cosTheta_V, double _roughness ) : double
BeckmannNDF ( double _cosTheta_M, double _roughness ) : double
EvalAnisotropicFlattening ( float _Vx, float _Vy, float _Vz, double _scale, double _invScale ) : double
EvalIsotropicFlattening ( float _Vx, float _Vy, float _Vz, double _scale, double _invScale ) : double
GGXG1 ( double _cosTheta_V, double _roughness ) : double
GGXNDF ( double _cosTheta_M, double _roughness ) : double
Masking ( double _cosTheta_V, double _roughness ) : double
NDF ( double _cosTheta_M, double _roughness ) : double
PhongG1 ( double _cosTheta_V, double _roughness ) : double
PhongNDF ( double _cosTheta_M, double _roughness ) : double
Roughness2PhongExponent ( double _roughness ) : double

public Constrain ( double _Parameters ) : void
_Parameters	double
return	void

public Eval ( double _newParameters ) : double
_newParameters	double
return	double

Reads back a lobe texture histogram into an array

public static HistogramTexture2Array ( Texture2D _texHistogram_CPU, int _scatteringOrder ) : ].double[
_texHistogram_CPU	Texture2D
_scatteringOrder	int
return	].double[

Initialize the lobe model parameters

public InitLobeData ( LOBE_TYPE _lobeType, float3 _incomingDirection, double _theta, double _roughness, double _scale, double _flatteningFactor, double _maskingImportance, double _oversizeFactor, bool _fitUsingCenterOfMass ) : void
_lobeType	LOBE_TYPE	Type of lobe to fit
_incomingDirection	float3	Incoming light direction, pointing TOWARD the surface (Z-up)
_theta	double	Initial lobe theta angle
_roughness	double	Initial lobe roughness
_scale	double	Initial lobe scale
_flatteningFactor	double	Initial lobe flattening
_maskingImportance	double
_oversizeFactor	double	Simulation oversize factor. A value of 1 makes the lobe fit exactly, a value higher than one will make the fit lobe smaller than the simulated data, a value lower than one will make the lob larger than the simulated data
_fitUsingCenterOfMass	bool	If true, the fitting distance is measured against a sphere centered on the Center of Mass rather than the (0,0,0) origin. Precision is usually better when using this option.
return	void

Initializes the array of data we need to fit with the lobe model Computes the Center of Mass of the lobe

public InitTargetData ( double _histogramData ) : void
_histogramData	double
return	void

public LobeModel ( ) : System
return	System

Sets the contraints for each parameter

public SetConstraint ( int _parameterIndex, double _min, double _max ) : void
_parameterIndex	int
_min	double
_max	double
return	void