#include <imrPhysicalSkyLight.h>

Class Description

Access interface for the Mental Ray Physical Sky object.

This class represents the Mental Ray Physical Sky object implemented by 3ds Max. Given a pointer to a skylight object, one can get this interfaces as follows:

Object* skylight = // obtain a pointer to an object
BaseInterface* skyInteface = skylight->GetInterface(MRPHYSSKY_LIGHT_INTERFACECLASS_ID);
IMRPhysicalSkyInterface* physSkyInterface = dynamic_cast<IMRPhysicalSkyInterface*>(skyInterface);

Inheritance diagram for IMRPhysicalSkyInterface:

Public Types
enum	SkyModel { eHaze = 0, ePerez, eCIE }

enum	CIEModel { eOvercastSky = 0, eClearSky }

Public Types inherited from BaseInterface
enum	LifetimeType { noRelease, immediateRelease, wantsRelease, serverControlled }

Public Member Functions
virtual Interface_ID	GetID ()
	Returns the Interface ID of this interface. More...

virtual	~IMRPhysicalSkyInterface ()
	A virtual destructor for the interface. More...

virtual void	getPerezABCDE (float &A, float &B, float &C, float &D, float &E, TimeValue t, Interval &valid) const =0
	Get the current calculate Perez Params based upon the current illuminance (or possibly irradiance if coming from a weather file). More...

Multiplier
The multiplier for the value of the sky's brightness
virtual float	getMultiplier (TimeValue &t, Interval &valid) const =0
	Gets the value of the multiplier for the sky's brightness. More...

virtual bool	setMultiplier (TimeValue t, float multiplier)=0
	Sets the value of the multiplier for the sky's brightness. More...

Haze
The amount of particulate matter in the air. Possible values range from 0.0 (a completely clear day) to 15.0 (extremely overcast, or a sandstorm in the Sahara). Default=0.0.
virtual float	getHaze (TimeValue &t, Interval &valid) const =0
	Gets the haze value of the sky. More...

virtual bool	setHaze (TimeValue t, float haze)=0
	Sets the haze value of the sky. More...

Red/Blue Shift
Provides artistic control over the redness of the sky light. The default value of 0.0 is the physically correct value (calculated for a 6500K whitepoint), but can be changed with this parameter, which ranges from -1.0 (extremely blue) to 1.0 (extremely red).
virtual float	getRedBlueShift (TimeValue &t, Interval &valid) const =0
	Gets the red/blue tint value of the sky. More...

virtual bool	setRedBlueShift (TimeValue t, float redBlueShift)=0
	Sets the red/blue tint value of the sky. More...

Saturation
Provides artistic control over saturation of the sky light. The default value of 1.0 is the physically calculated saturation level. Possible values range from 0.0 (black and white) to 2.0 (extremely high saturation).
virtual float	getSaturation (TimeValue &t, Interval &valid) const =0
	Gets the saturation value of the sky. More...

virtual bool	setSaturation (TimeValue t, float saturation)=0
	Sets the saturation value of the sky. More...

Ground Color
The color of the virtual ground plane. Note that this is a diffuse reflectance value (that is, albedo). The ground appears as a Lambertian reflector with this diffuse color, lit by the sun and sky only, and does not receive any shadows.
virtual AColor	getGroundColor (TimeValue &t, Interval &valid) const =0
	Gets the ground color. More...

virtual bool	setGroundColor (TimeValue t, AColor groundColor)=0
	Sets the ground color. More...

Night Color
The minimum color of the sky: The sky will never become darker than this value. It can be useful for adding things like moon, stars, high-altitude cirrus clouds that remain lit long after sunset, etc. As the sun sets and the sky darkens, the contribution from Night Color is unaffected and remains as the base light level.
virtual AColor	getNightColor (TimeValue &t, Interval &valid) const =0
	Gets the night color of the sky. More...

virtual bool	setNightColor (TimeValue t, AColor nightColor)=0
	Sets the night color of the sky. More...

Horizon Blur
The 'blurriness' with which the horizon is rendered. Default=0.1.
virtual float	getHorizonBlur (TimeValue &t, Interval &valid) const =0
	Gets the horizon blur value. More...

virtual bool	setHorizonBlur (TimeValue t, float horizonBlur)=0
	Sets the horizon blur value. More...

Horizon Height
The vertical position of the horizon. Default=0.0.
virtual float	getHorizonHeight (TimeValue &t, Interval &valid) const =0
	Gets the horizon height value. More...

virtual bool	setHorizonHeight (TimeValue t, float horizonHeight)=0
	Sets the horizon height value. More...

Aerial Perspective
How distant objects are perceived as hazier and tinted towards the blue end of the spectrum. This is a boolean for enabling/disabling aerial perspective.
virtual bool	getAerialPerspective (TimeValue &t, Interval &valid) const =0
	Gets whether or not aerial perspective is enabled. More...

virtual bool	setAerialPerspective (TimeValue t, bool aerialPerspective)=0
	Sets whether or not aerial perspective is enabled. More...

Visibility Distance
The visibility distance of the aerial perspective. When nonzero, it defines the the distance at which approximately 10% of haze is visible at a Haze level of 0.0.
virtual float	getVisibilityDistance (TimeValue &t, Interval &valid) const =0
	Gets the visibility distance value. More...

virtual bool	setVisibilityDistance (TimeValue t, float visibilityDistance)=0
	Sets the visibility distance value. More...

Sky Model
The type of internal sky model that will be used to determine the sky luminance distrubtion pattern.
virtual SkyModel	getSkyModel (TimeValue &t, Interval &valid) const =0
	Gets the type of sky model being used. More...

virtual bool	setSkyModel (TimeValue t, SkyModel skyModel)=0
	Sets the type of sky model being used. More...

Perez Diffuse Horizontal Illuminance
The diffuse horizontal illuminance value used by the Perez sky model
virtual float	getPerezDiffuseHorizIlluminance (TimeValue &t, Interval &valid) const =0
	Gets the Perez diffuse horizontal illuminance value. More...

virtual bool	setPerezDiffuseHorizIlluminance (TimeValue t, float perezDiffuseHorizIlluminance)=0
	Sets the Perez diffuse horizontal illuminance value. More...

Perez Direct Normal Illuminance
The direct normal illuminance value used by the Perez Sky Model. This value will drive a MR Sun object if one exists in the same daylight system as the sky object
virtual float	getPerezDirectNormalIlluminance (TimeValue &t, Interval &valid) const =0
	Gets the Perez direct normal illuminance value. More...

virtual bool	setPerezDirectNormalIlluminance (TimeValue t, float perezDirectNormalIlluminance)=0
	Sets the Perez direct normal illuminance value. More...

CIE Diffuse Horizontal Illuminance
The diffuse horizontal illuminance value used by the CIE sky model
virtual float	getCIEDiffuseHorizIlluminance (TimeValue &t, Interval &valid) const =0
	Gets the CIE diffuse horizontal illuminance value. More...

virtual bool	setCIEDiffuseHorizIlluminance (TimeValue t, float cieDiffuseHorizIlluminance)=0
	Sets the CIE diffuse horizontal illuminance value. More...

CIE Model
The CIE sky type supports two models, an overcast sky model and a clear sky model.
virtual CIEModel	getCIEModel (TimeValue &t, Interval &valid) const =0
	Get the CIE sky type model. More...

virtual bool	setCIEModel (TimeValue t, CIEModel model)=0
	Set the CIE sky type model. More...

Public Member Functions inherited from BaseInterface
virtual UtilExport	~BaseInterface ()
	Destructor. More...

UtilExport BaseInterface *	GetInterface (Interface_ID id)

virtual LifetimeType	LifetimeControl ()

virtual bool	RegisterNotifyCallback (InterfaceNotifyCallback *incb)

virtual void	UnRegisterNotifyCallback (InterfaceNotifyCallback *incb)

virtual BaseInterface *	AcquireInterface ()

virtual void	ReleaseInterface ()

virtual void	DeleteInterface ()

virtual BaseInterface *	CloneInterface (void *remapDir=NULL)

Public Member Functions inherited from InterfaceServer
virtual UtilExport	~InterfaceServer ()
	Destructor. More...

Additional Inherited Members
Static Public Member Functions inherited from MaxHeapOperators
static UtilExport void *	operator new (size_t size)
	Standard new operator used to allocate objects If there is insufficient memory, an exception will be thrown. More...

static UtilExport void *	operator new (size_t size, const std::nothrow_t &e)
	Standard new operator used to allocate objects if there is insufficient memory, NULL will be returned. More...

static UtilExport void *	operator new (size_t size, const char *filename, int line)
	New operator used to allocate objects that takes the filename and line number where the new was called If there is insufficient memory, an exception will be thrown. More...

static UtilExport void *	operator new (size_t size, int block_type, const char *filename, int line)
	New operator used to allocate objects that takes the type of memory, filename and line number where the new was called If there is insufficient memory, an exception will be thrown. More...

static UtilExport void *	operator new (size_t size, const std::nothrow_t &e, const char *filename, int line)
	New operator used to allocate objects that takes the filename and line number where the new was called If there is insufficient memory, NULL will be returned. More...

static UtilExport void *	operator new (size_t size, unsigned long flags)
	New operator used to allocate objects that takes extra flags to specify special operations If there is insufficient memory, an exception will be thrown. More...

static UtilExport void *	operator new (size_t size, const std::nothrow_t &e, unsigned long flags)
	New operator used to allocate objects that takes extra flags to specify special operations If there is insufficient memory, NULL will be returned. More...

static UtilExport void *	operator new[] (size_t size)
	New operator used to allocate arrays of objects If there is insufficient memory, an exception will be thrown. More...

static UtilExport void *	operator new[] (size_t size, const std::nothrow_t &e)
	New operator used to allocate arrays of objects If there is insufficient memory, NULL will be returned. More...

static UtilExport void *	operator new[] (size_t size, const char *filename, int line)
	New operator used to allocate arrays of objects If there is insufficient memory, an exception will be thrown. More...

static UtilExport void *	operator new[] (size_t size, int block_type, const char *filename, int line)
	New operator used to allocate arrays of objects. More...

static UtilExport void *	operator new[] (size_t size, const std::nothrow_t &e, const char *filename, int line)
	New operator used to allocate arrays of objects If there is insufficient memory, NULL will be returned. More...

static UtilExport void *	operator new[] (size_t size, unsigned long flags)
	New operator used to allocate arrays of objects If there is insufficient memory, an exception will be thrown. More...

static UtilExport void *	operator new[] (size_t size, const std::nothrow_t &e, unsigned long flags)
	New operator used to allocate arrays of objects If there is insufficient memory, NULL will be returned. More...

static UtilExport void	operator delete (void *ptr)
	Standard delete operator used to deallocate an object If the pointer is invalid, an exception will be thrown. More...

static UtilExport void	operator delete (void *ptr, const std::nothrow_t &e)
	Standard delete operator used to deallocate an object If the pointer is invalid, nothing will happen. More...

static UtilExport void	operator delete (void ptr, const char filename, int line)
	Delete operator used to deallocate an object that takes the filename and line number where the delete was called If the pointer is invalid, an exception will be thrown. More...

static UtilExport void	operator delete (void ptr, int block_type, const char filename, int line)
	Delete operator used to deallocate an object that takes the type of memory, filename and line number where the delete was called If the pointer is invalid, an exception will be thrown. More...

static UtilExport void	operator delete (void ptr, const std::nothrow_t &e, const char filename, int line)
	Delete operator used to deallocate an object that takes the filename and line number where the delete was called If the pointer is invalid, nothing will happen. More...

static UtilExport void	operator delete (void *ptr, unsigned long flags)
	Delete operator used to deallocate an object that takes extra flags to specify special operations If the pointer is invalid, an exception will be thrown. More...

static UtilExport void	operator delete (void *ptr, const std::nothrow_t &e, unsigned long flags)
	Delete operator used to deallocate an object that takes extra flags to specify special operations If the pointer is invalid, nothing will happen. More...

static UtilExport void	operator delete[] (void *ptr)
	Standard delete operator used to deallocate an array of objects If the pointer is invalid, an exception will be thrown. More...

static UtilExport void	operator delete[] (void *ptr, const std::nothrow_t &e)
	Standard delete operator used to deallocate an array of objects If the pointer is invalid, nothing will happen. More...

static UtilExport void	operator delete[] (void ptr, const char filename, int line)
	Delete operator used to deallocate an array of objects that takes the filename and line number where the delete was called If the pointer is invalid, an exception will be thrown. More...

static UtilExport void	operator delete[] (void ptr, int block_type, const char filename, int line)
	Delete operator used to deallocate an array of objects that takes the type of memory, filename and line number where the delete was called If the pointer is invalid, an exception will be thrown. More...

static UtilExport void	operator delete[] (void ptr, const std::nothrow_t &e, const char filename, int line)
	Delete operator used to deallocate an array of objects that takes the filename and line number where the delete was called If the pointer is invalid, nothing will happen. More...

static UtilExport void	operator delete[] (void *ptr, unsigned long flags)
	Delete operator used to deallocate an array of objects that takes extra flags to specify special operations If the pointer is invalid, an exception will be thrown. More...

static UtilExport void	operator delete[] (void *ptr, const std::nothrow_t &e, unsigned long flags)
	Delete operator used to deallocate an array of objects that takes extra flags to specify special operations If the pointer is invalid, an exception will be thrown. More...

static UtilExport void *	operator new (size_t size, void *placement_ptr)
	Placement new operator. More...

static UtilExport void	operator delete (void ptr, void placement_ptr)
	Placement delete operator. More...

Member Enumeration Documentation

enum SkyModel

Enumerator
eHaze
ePerez
eCIE

42 { eHaze = 0, ePerez, eCIE};

IMRPhysicalSkyInterface::ePerez

Definition: imrPhysicalSkyLight.h:42

IMRPhysicalSkyInterface::eCIE

Definition: imrPhysicalSkyLight.h:42

IMRPhysicalSkyInterface::eHaze

Definition: imrPhysicalSkyLight.h:42

enum CIEModel

Enumerator
eOvercastSky
eClearSky

43 { eOvercastSky = 0, eClearSky};

IMRPhysicalSkyInterface::eOvercastSky

Definition: imrPhysicalSkyLight.h:43

IMRPhysicalSkyInterface::eClearSky

Definition: imrPhysicalSkyLight.h:43

Constructor & Destructor Documentation

virtual ~IMRPhysicalSkyInterface ( )

inlinevirtual

A virtual destructor for the interface.

49 {};

Member Function Documentation

virtual Interface_ID GetID ( )

inlinevirtual

Returns the Interface ID of this interface.

Reimplemented from BaseInterface.

Reimplemented in IMRPhysicalSkyInterface2.

46 { return MRPHYSSKY_LIGHT_INTERFACECLASS_ID; };

MRPHYSSKY_LIGHT_INTERFACECLASS_ID

#define MRPHYSSKY_LIGHT_INTERFACECLASS_ID

Interface id for the Mental Ray Physical Sky object.

Definition: imrPhysicalSkyLight.h:29

virtual float getMultiplier	(	TimeValue &	t,
		Interval &	valid
	)		const

pure virtual

Gets the value of the multiplier for the sky's brightness.

Parameters

[in]	t	- The time at which we're getting the multiplier
[in]	valid	- The interval at which we're getting the multiplier

Returns: The value of the multiplier

virtual bool setMultiplier	(	TimeValue	t,
		float	multiplier
	)

pure virtual

Sets the value of the multiplier for the sky's brightness.

Parameters

[in]	t	- The time at which to set the multiplier
[in]	multiplier	- The value of what to set the multiplier to

Returns: true if the setting was successful

virtual float getHaze	(	TimeValue &	t,
		Interval &	valid
	)		const

pure virtual

Gets the haze value of the sky.

Parameters

[in]	t	- The time at which we're getting the haze value
[in]	valid	- The interval at which we're getting the haze value

Returns: The value of the haze

virtual bool setHaze	(	TimeValue	t,
		float	haze
	)

pure virtual

Sets the haze value of the sky.

Parameters

[in]	t	- The time at which to set the haze value
[in]	haze	- The value of what to set the haze value to

Returns: true if the setting was successful

virtual float getRedBlueShift	(	TimeValue &	t,
		Interval &	valid
	)		const

pure virtual

Gets the red/blue tint value of the sky.

Parameters

[in]	t	- The time at which we're getting the red/blue shift
[in]	valid	- The interval at which we're getting the red/blue shift

Returns: The value of the red/blue shift

virtual bool setRedBlueShift	(	TimeValue	t,
		float	redBlueShift
	)

pure virtual

Sets the red/blue tint value of the sky.

Parameters

[in]	t	- The time at which to set the red/blue shift
[in]	redBlueShift	- The value of what to set the red/blue shift to

Returns: true if the setting was successful

virtual float getSaturation	(	TimeValue &	t,
		Interval &	valid
	)		const

pure virtual

Gets the saturation value of the sky.

Parameters

[in]	t	- The time at which we're getting the saturation value
[in]	valid	- The interval at which we're getting the saturation value

Returns: The value of the saturation

virtual bool setSaturation	(	TimeValue	t,
		float	saturation
	)

pure virtual

Sets the saturation value of the sky.

Parameters

[in]	t	- The time at which to set the saturation
[in]	saturation	- The value of what to set the saturation to

Returns: true if the setting was successful

virtual AColor getGroundColor	(	TimeValue &	t,
		Interval &	valid
	)		const

pure virtual

Gets the ground color.

Parameters

[in]	t	- The time at which we're getting the ground color
[in]	valid	- The interval at which we're getting the ground color

Returns: The value of the ground color

virtual bool setGroundColor	(	TimeValue	t,
		AColor	groundColor
	)

pure virtual

Sets the ground color.

Parameters

[in]	t	- The time at which to set the ground color
[in]	groundColor	- The value of what to set the ground color to

Returns: true if the setting was successful

virtual AColor getNightColor	(	TimeValue &	t,
		Interval &	valid
	)		const

pure virtual

Gets the night color of the sky.

Parameters

[in]	t	- The time at which we're getting the night color
[in]	valid	- The interval at which we're getting the night color

Returns: The value of the night color

virtual bool setNightColor	(	TimeValue	t,
		AColor	nightColor
	)

pure virtual

Sets the night color of the sky.

Parameters

[in]	t	- The time at which to set the night color
[in]	nightColor	- The value of what to set the night color to

Returns: true if the setting was successful

virtual float getHorizonBlur	(	TimeValue &	t,
		Interval &	valid
	)		const

pure virtual

Gets the horizon blur value.

Parameters

[in]	t	- The time at which we're getting the horizon blur value
[in]	valid	- The interval at which we're getting the horizon blur

Returns: The value of the horizon blur

virtual bool setHorizonBlur	(	TimeValue	t,
		float	horizonBlur
	)

pure virtual

Sets the horizon blur value.

Parameters

[in]	t	- The time at which to set the horizon blur value
[in]	horizonBlur	- The value of what to set the horizon blur to

Returns: true if the setting was successful

virtual float getHorizonHeight	(	TimeValue &	t,
		Interval &	valid
	)		const

pure virtual

Gets the horizon height value.

Parameters

[in]	t	- The time at which we're getting the horizon height
[in]	valid	- The interval at which we're getting the horizon height

Returns: The value of the horizon height

virtual bool setHorizonHeight	(	TimeValue	t,
		float	horizonHeight
	)

pure virtual

Sets the horizon height value.

Parameters

[in]	t	- The time at which to set the horizon height
[in]	horizonHeight	- The value of what to set the horizon height to

Returns: true if the setting was successful

virtual bool getAerialPerspective	(	TimeValue &	t,
		Interval &	valid
	)		const

pure virtual

Gets whether or not aerial perspective is enabled.

Parameters

[in]	t	- The time at which we're getting the aerial perspective
[in]	valid	- The interval at which we're getting the aerial perspective

Returns: A boolean value enabling or disabling the aerial perspective

virtual bool setAerialPerspective	(	TimeValue	t,
		bool	aerialPerspective
	)

pure virtual

Sets whether or not aerial perspective is enabled.

Parameters

[in]	t	- The time at which to set the aerial perspective
[in]	aerialPerspective	- Enable/disable the aerial perspective

Returns: true if the setting was successful

virtual float getVisibilityDistance	(	TimeValue &	t,
		Interval &	valid
	)		const

pure virtual

Gets the visibility distance value.

Parameters

[in]	t	- The time at which we're getting the visibility distance
[in]	valid	- The interval at which we're getting the visibility distance

Returns: The value of the visibility distance

virtual bool setVisibilityDistance	(	TimeValue	t,
		float	visibilityDistance
	)

pure virtual

Sets the visibility distance value.

Parameters

[in]	t	- The time at which to set the visibility distance
[in]	visibilityDistance	- The value of what to set the visibility distance to

Returns: true if the setting was successful

virtual SkyModel getSkyModel	(	TimeValue &	t,
		Interval &	valid
	)		const

pure virtual

Gets the type of sky model being used.

Parameters

[in]	t	- The time at which we're getting the sky model
[in]	valid	- The interval at which we're getting the sky model

Returns: The sky model type either SkyModel::eHaze, the default haze model, SkyModel::ePerez, the Perez sky model, or SkyModel::eCIE, the CIE sky model type

virtual bool setSkyModel	(	TimeValue	t,
		SkyModel	skyModel
	)

pure virtual

Sets the type of sky model being used.

Parameters

[in]	t	- The time at which we are setting the sky model
[in]	skyModel	- The value that the sky model will be set to. It can be either SkyModel::eHaze, SkyModel::ePerez, or SkyModel::eCIE

Returns: true if the setting was successful, false otherwise

virtual float getPerezDiffuseHorizIlluminance	(	TimeValue &	t,
		Interval &	valid
	)		const

pure virtual

Gets the Perez diffuse horizontal illuminance value.

Parameters

[in]	t	- The time at which we're getting the diffuse horizontal illuminance for the Perez model
[in]	valid	- The interval at which we're getting the diffuse horizontal illuminance for the Perez model

Returns: The diffuse horizontal illuminance value used by the Perez sky model

virtual bool setPerezDiffuseHorizIlluminance	(	TimeValue	t,
		float	perezDiffuseHorizIlluminance
	)

pure virtual

Sets the Perez diffuse horizontal illuminance value.

Parameters

[in]	t	- The time at which we are setting the Perez diffuse horizontal illuminance
[in]	perezDiffuseHorizIlluminance	- The value that the Perez diffuse horizontal illuminance will be set to

Returns: true if the setting was successful, false otherwise

virtual float getPerezDirectNormalIlluminance	(	TimeValue &	t,
		Interval &	valid
	)		const

pure virtual

Gets the Perez direct normal illuminance value.

Parameters

[in]	t	- The time at which we're getting the direct normal illuminance for the Perez model
[in]	valid	- The interval at which we're getting the direct normal illuminance for the Perez model

Returns: The direct normal illuminance value used by the Perez model

virtual bool setPerezDirectNormalIlluminance	(	TimeValue	t,
		float	perezDirectNormalIlluminance
	)

pure virtual

Sets the Perez direct normal illuminance value.

Parameters

[in]	t	- The time at which we are setting the Perez direct normal illuminance
[in]	perezDirectNormalIlluminance	- The value that the Perez direct normal illuminance will be set to

Returns: true if the setting was successful, false otherwise

virtual float getCIEDiffuseHorizIlluminance	(	TimeValue &	t,
		Interval &	valid
	)		const

pure virtual

Gets the CIE diffuse horizontal illuminance value.

Parameters

[in]	t	- The time at which we're getting the diffuse horizontal illuminance for the CIE model
[in]	valid	- The interval at which we're getting the diffuse horizontal illuminance for the CIE model

Returns: The diffuse horizontal illuminance value used by the CIE sky model

virtual bool setCIEDiffuseHorizIlluminance	(	TimeValue	t,
		float	cieDiffuseHorizIlluminance
	)

pure virtual

Sets the CIE diffuse horizontal illuminance value.

Parameters

[in]	t	- The time at which we are setting the CIE diffuse horizontal illuminance
[in]	cieDiffuseHorizIlluminance	- The value that the CIE diffuse horizontal illuminance will be set to

Returns: true if the setting was successful, false otherwise

virtual CIEModel getCIEModel	(	TimeValue &	t,
		Interval &	valid
	)		const

pure virtual

Get the CIE sky type model.

Parameters

[in]	t	- The time at which we're getting the CIE sky type model
[in]	valid	- The interval at which we're getting the model, overcast or clear, for the CIE sky type

Returns: Will return either CIEModel::eOvercastSky or CIEModel::eClearSky

virtual bool setCIEModel	(	TimeValue	t,
		CIEModel	model
	)

pure virtual

Set the CIE sky type model.

Parameters

[in]	t	- The time at which we are setting the CIE sky model type
[in]	model	- The CIE sky model that will be used, can be ither CIEModel::eOvercastSky or CIEModel::eClearSky

Returns: true if the setting was successful

virtual void getPerezABCDE	(	float &	A,
		float &	B,
		float &	C,
		float &	D,
		float &	E,
		TimeValue	t,
		Interval &	valid
	)		const

pure virtual

Get the current calculate Perez Params based upon the current illuminance (or possibly irradiance if coming from a weather file).

Please see All Weather Model For Sky Luminance Distrubution - Preliminary Configuration and Validation, R Perez et al. 1989.

Parameters

[out]	A	- If negative horizon is brighter than zenith else darker
[out]	B	- Luminance Gradient near the horizon
[out]	C	- Relative intensity of the circumsolar region
[out]	D	- Width of circumsolar region
[out]	E	- Relative intensity of backscattered ligth at earth's surface
[in]	t	- The time at which we're getting the multiplier
[in]	valid	- The interval at which we're getting the multiplier

IMRPhysicalSkyInterface Class Reference

Class Description

Public Types

Public Member Functions

Additional Inherited Members

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation