OdGiShadowParameters Class Reference

#include <GiLightTraits.h>

Public Types
enum	ShadowType { kShadowsRayTraced = 0 , kShadowMaps , kAreaSampled }
enum	ExtendedLightShape {   kLinear = 0 , kRectangle , kDisk , kCylinder ,   kSphere }

Public Member Functions
	OdGiShadowParameters ()
	OdGiShadowParameters (const OdGiShadowParameters &parms)
OdGiShadowParameters &	operator= (const OdGiShadowParameters &parms)
bool	operator== (const OdGiShadowParameters &parms) const
bool	operator!= (const OdGiShadowParameters &parms) const
void	setShadowsOn (bool on)
bool	shadowsOn () const
void	setShadowType (ShadowType typ)
ShadowType	shadowType () const
bool	setShadowMapSize (OdUInt16 sz)
OdUInt16	shadowMapSize () const
bool	setShadowMapSoftness (OdUInt8 soft)
OdUInt8	shadowMapSoftness () const
bool	setShadowSamples (OdUInt16 nSamples)
OdUInt16	shadowSamples () const
void	setShapeVisibility (bool bVisibility)
bool	shapeVisibility () const
void	setExtendedLightShape (ExtendedLightShape lightShape)
ExtendedLightShape	extendedLightShape () const
bool	setExtendedLightLength (double dLength)
double	extendedLightLength () const
bool	setExtendedLightWidth (double dWidth)
double	extendedLightWidth () const
bool	setExtendedLightRadius (double dRadius)
double	extendedLightRadius () const
void	save (OdGsFiler *pFiler) const
void	load (OdGsFiler *pFiler)

Detailed Description

Corresponding C++ library: TD_Gi <group OdGi_Classes>

See also

<link gi_shadows_rendering, Shadows Visualization>

Definition at line 149 of file GiLightTraits.h.

Member Enumeration Documentation

ExtendedLightShape

enum OdGiShadowParameters::ExtendedLightShape

Represents shapes of the extended light sources.

Enumerator
kLinear	Linear light source.
kRectangle	Rectangular-shaped light source.
kDisk	Disk-shaped light source.
kCylinder	Cylinder-shaped light source.
kSphere	Sphere-shaped light source.

Definition at line 224 of file GiLightTraits.h.

ShadowType

enum OdGiShadowParameters::ShadowType

Represents methods that are used to compute shadows.

Enumerator
kShadowsRayTraced	Ray-traced shadows.
kShadowMaps	Shadow maps.
kAreaSampled	The area-sampled shadow algorithm shows the effect of extended light sources.

Definition at line 211 of file GiLightTraits.h.

Constructor & Destructor Documentation

OdGiShadowParameters() [1/2]

OdGiShadowParameters::OdGiShadowParameters ( )

inline

Default constructor for the OdGiShadowParameters class. Initializes the following data members:

Data member Value Description m_bShadowsOn true Flag that shows if shadows are enabled m_shadowMapSoftness 1 The number of pixels at the shadow edge that are diffused. m_bShapeVisible false Flag that shows if the light shape is visible in the rendering. m_shadowType OdGiShadowParameters::kShadowsRayTraced Method which is used to compute shadows cast from the light source. m_shadowMapSize 256 Shadow map size in pixels. m_shadowSamples 16 The number of shadow rays to shoot for the light. m_lightShape OdGiShadowParameters::kSphere The shape of the extended light source. m_lightLength 0.0 The length of the extended light source. m_lightWidth 0.0 The width of the extended light source. m_lightRadius 0.0 Radius of the extended light source.

Definition at line 495 of file GiLightTraits.h.

OdGiShadowParameters() [2/2]

OdGiShadowParameters::OdGiShadowParameters ( const OdGiShadowParameters &  parms )

inline

Copy constructor for the OdGiShadowParameters class.

Parameters

parms

[in] Shadow parameters to be copied.

Definition at line 509 of file GiLightTraits.h.

Member Function Documentation

extendedLightLength()

double OdGiShadowParameters::extendedLightLength ( ) const

inline

Retrieves the length of the extended light source.

Returns

the length of the extended light source as a value of the double type.

Definition at line 652 of file GiLightTraits.h.

extendedLightRadius()

double OdGiShadowParameters::extendedLightRadius ( ) const

inline

Retrieves the radius of the extended light source.

Returns

radius for the extended light source as the value of the double type.

Definition at line 674 of file GiLightTraits.h.

extendedLightShape()

OdGiShadowParameters::ExtendedLightShape OdGiShadowParameters::extendedLightShape ( ) const

inline

Retrieves the shape of the extended light source.

Returns

the shape of the extended light source as a value from the ExtendedLightShape enumeration.

Definition at line 641 of file GiLightTraits.h.

extendedLightWidth()

double OdGiShadowParameters::extendedLightWidth ( ) const

inline

Retrieves the width of the extended light source.

Returns

the width of the extended light source as a value of the double type.

Definition at line 663 of file GiLightTraits.h.

load()

void OdGiShadowParameters::load ( OdGsFiler *  pFiler )

inline

Loads the shadow parameters from the specified filer.

Parameters

pFiler

[in] Pointer to a filer to load parameters from.

Definition at line 469 of file GiLightTraits.h.

operator!=()

bool OdGiShadowParameters::operator!= ( const OdGiShadowParameters &  parms ) const

inline

Inequality operator for the OdGiShadowParameters class.

Parameters

parms

[in] Parameters to be compared.

Returns

true if these shadow parameters are bot equal to the passed shadow parameters, false otherwise.

Definition at line 552 of file GiLightTraits.h.

operator=()

OdGiShadowParameters & OdGiShadowParameters::operator= ( const OdGiShadowParameters &  parms )

inline

Assignment operator for the OdGiShadowParameters class.

Parameters

parms

[in] Shadow parameters to be assigned.

Returns

reference to shadow parameters.

Definition at line 523 of file GiLightTraits.h.

operator==()

bool OdGiShadowParameters::operator== ( const OdGiShadowParameters &  parms ) const

inline

Equality operator for the OdGiShadowParameters class.

Parameters

parms

[in] Parameters to be compared.

Returns

true if these shadow parameters are equal to the passed shadow parameters, false otherwise.

Definition at line 538 of file GiLightTraits.h.

save()

void OdGiShadowParameters::save ( OdGsFiler *  pFiler ) const

inline

Saves the shadow parameters to the specified filer.

Parameters

pFiler

[in] Pointer to a filer to save parameters to.

Definition at line 452 of file GiLightTraits.h.

setExtendedLightLength()

bool OdGiShadowParameters::setExtendedLightLength ( double  dLength )

inline

Specifies the length of the extended light source.

Parameters

dLength

[in] Length for the extended light source.

Remarks

This method is useful only if shadow type is kAreaSampled and the shape of the extended light source is kLinear, kRectangle or kCylinder.

Definition at line 646 of file GiLightTraits.h.

setExtendedLightRadius()

bool OdGiShadowParameters::setExtendedLightRadius ( double  dRadius )

inline

Specifies the radius of the extended light source.

Parameters

dRadius

[in] Radius for the extended light source.

Returns

true.

Remarks

This method is useful only if shadow type is kAreaSampled and the shape of the extended light source is kDisk, kCylinder or kSphere.

Definition at line 668 of file GiLightTraits.h.

setExtendedLightShape()

void OdGiShadowParameters::setExtendedLightShape ( OdGiShadowParameters::ExtendedLightShape  lightShape )

inline

Specifies the shape of the extended light source.

Parameters

lightShape

[in] Light shape for the extended light source.

Remarks

This method is useful only if shadow type is kAreaSampled.

Definition at line 636 of file GiLightTraits.h.

setExtendedLightWidth()

bool OdGiShadowParameters::setExtendedLightWidth ( double  dWidth )

inline

Specifies the width of the extended light source.

Parameters

dWidth

[in] Width for the extended light source.

Remarks

This method is useful only if shadow type is kAreaSampled and the shape of the extended light source is kLinear, kRectangle or kCylinder.

Definition at line 657 of file GiLightTraits.h.

setShadowMapSize()

bool OdGiShadowParameters::setShadowMapSize ( OdUInt16  sz )

inline

Specifies a shadow map size.

Parameters

sz	[in] Shadow map size.

Remarks

Valid values are 64, 128, 256, 512, 1024, 2048, and 4096. Smaller values provide softer and smudged shadows, while greater values provide sharper shadows, therefore they require more resources to be calculated.

Definition at line 586 of file GiLightTraits.h.

setShadowMapSoftness()

bool OdGiShadowParameters::setShadowMapSoftness ( OdUInt8  soft )

inline

Specifies a shadow map softness.

Parameters

soft	[in] Shadow map softness value.

Remarks

The passed parameter represents the number of pixels at the shadow edge that are diffused. This method is useful only if shadow type if kShadowMaps.

Definition at line 604 of file GiLightTraits.h.

setShadowSamples()

bool OdGiShadowParameters::setShadowSamples ( OdUInt16  nSamples )

inline

Specifies a number of shadow rays to use for the light.

Parameters

nSamples

[in] The number of shadow rays to use for the light.

Returns

true.

Remarks

The number of samples controls the softness of sampled shadows. This method is useful only if shadow type if kAreaSampled.

Definition at line 615 of file GiLightTraits.h.

setShadowsOn()

void OdGiShadowParameters::setShadowsOn ( bool  on )

inline

Specifies whether shadows are casted from the light.

Parameters

on	[in] Flag that specifies whether to enable shadows .

Definition at line 566 of file GiLightTraits.h.

setShadowType()

void OdGiShadowParameters::setShadowType ( ShadowType  typ )

inline

Specifies type of the shadows.

Parameters

typ	[in] Shadow type.

Definition at line 576 of file GiLightTraits.h.

setShapeVisibility()

void OdGiShadowParameters::setShapeVisibility ( bool  bVisibility )

inline

Specifies whether light shape should be visible in the rendering.

Parameters

bVisibility

[in] Flag that specifies whether light shape should be visible.

Definition at line 626 of file GiLightTraits.h.

shadowMapSize()

OdUInt16 OdGiShadowParameters::shadowMapSize ( ) const

inline

Retrieves a shadow map size.

Returns

shadow map size as OdUInt16 value.

Remarks

Returned values can be 64, 128, 256, 512, 1024, 2048, and 4096. Smaller values represent softer and smudged shadows, while greater values represent sharper shadows.

Definition at line 599 of file GiLightTraits.h.

shadowMapSoftness()

OdUInt8 OdGiShadowParameters::shadowMapSoftness ( ) const

inline

Retrieves a shadow map softness.

Returns

the number of pixels at the shadow edge that are diffused.

Definition at line 610 of file GiLightTraits.h.

shadowSamples()

OdUInt16 OdGiShadowParameters::shadowSamples ( ) const

inline

Retrieves a number of shadow rays to use for the light.

Returns

the number of shadow rays for the light as OdUInt16 value.

Remarks

The number of samples controls the softness of sampled shadows. This method is useful only if shadow type if kAreaSampled.

Definition at line 621 of file GiLightTraits.h.

shadowsOn()

bool OdGiShadowParameters::shadowsOn ( ) const

inline

Checks whether shadows are casted from the light.

Returns

true if shadows are enabled, false otherwise.

Definition at line 571 of file GiLightTraits.h.

shadowType()

OdGiShadowParameters::ShadowType OdGiShadowParameters::shadowType ( ) const

inline

Retrieves a type a the shadow.

Returns

a value from the ShadowType enumeration that represents one of the shadow types.

Definition at line 581 of file GiLightTraits.h.

shapeVisibility()

bool OdGiShadowParameters::shapeVisibility ( ) const

inline

Checks whether light shape is visible in the rendering.

Returns

true if light source is visible in the rendering, false otherwise.

Definition at line 631 of file GiLightTraits.h.

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

• GiLightTraits.h