Compute shading tables for encoded normals. More...

#include <vtkEncodedGradientShader.h>

Inheritance diagram for vtkEncodedGradientShader:

Collaboration diagram for vtkEncodedGradientShader:

Public Types
typedef vtkObject	Superclass
Public Member Functions
virtual int	IsA (const char *type)
vtkEncodedGradientShader *	NewInstance () const
void	PrintSelf (ostream &os, vtkIndent indent)

virtual void	SetZeroNormalDiffuseIntensity (float)
virtual float	GetZeroNormalDiffuseIntensity ()
virtual void	SetZeroNormalSpecularIntensity (float)
virtual float	GetZeroNormalSpecularIntensity ()

void	UpdateShadingTable (vtkRenderer ren, vtkVolume vol, vtkEncodedGradientEstimator *gradest)

float *	GetRedDiffuseShadingTable (vtkVolume *vol)
float *	GetGreenDiffuseShadingTable (vtkVolume *vol)
float *	GetBlueDiffuseShadingTable (vtkVolume *vol)
float *	GetRedSpecularShadingTable (vtkVolume *vol)
float *	GetGreenSpecularShadingTable (vtkVolume *vol)
float *	GetBlueSpecularShadingTable (vtkVolume *vol)

virtual void	SetActiveComponent (int)
virtual int	GetActiveComponent ()
Static Public Member Functions
static vtkEncodedGradientShader *	New ()
static int	IsTypeOf (const char *type)
static vtkEncodedGradientShader *	SafeDownCast (vtkObjectBase *o)
Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const
	vtkEncodedGradientShader ()
	~vtkEncodedGradientShader ()

void	BuildShadingTable (int index, double lightDirection[3], double lightAmbientColor[3], double lightDiffuseColor[3], double lightSpecularColor[3], double lightIntensity, double viewDirection[3], double material[4], int twoSided, vtkEncodedGradientEstimator *gradest, int updateFlag)
Protected Attributes
float *	ShadingTable [VTK_MAX_SHADING_TABLES][6]
vtkVolume *	ShadingTableVolume [VTK_MAX_SHADING_TABLES]
int	ShadingTableSize [VTK_MAX_SHADING_TABLES]
int	ActiveComponent
float	ZeroNormalDiffuseIntensity
float	ZeroNormalSpecularIntensity

Detailed Description

Compute shading tables for encoded normals.

vtkEncodedGradientShader computes shading tables for encoded normals that indicates the amount of diffuse and specular illumination that is received from all light sources at a surface location with that normal. For diffuse illumination this is accurate, but for specular illumination it is approximate for perspective projections since the center view direction is always used as the view direction. Since the shading table is dependent on the volume (for the transformation that must be applied to the normals to put them into world coordinates) there is a shading table per volume. This is necessary because multiple volumes can share a volume mapper.

Definition at line 44 of file vtkEncodedGradientShader.h.

Member Typedef Documentation

typedef vtkObject vtkEncodedGradientShader::Superclass

Reimplemented from vtkObject.

Definition at line 48 of file vtkEncodedGradientShader.h.

Constructor & Destructor Documentation

vtkEncodedGradientShader::vtkEncodedGradientShader ( ) [protected]

vtkEncodedGradientShader::~vtkEncodedGradientShader ( ) [protected]

Member Function Documentation

static vtkEncodedGradientShader* vtkEncodedGradientShader::New ( ) [static]

Create an object with Debug turned off, modified time initialized to zero, and reference counting on.

Reimplemented from vtkObject.

static int vtkEncodedGradientShader::IsTypeOf ( const char * name ) [static]

Return 1 if this class type is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkObject.

virtual int vtkEncodedGradientShader::IsA ( const char * name ) [virtual]

Return 1 if this class is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkObject.

static vtkEncodedGradientShader* vtkEncodedGradientShader::SafeDownCast ( vtkObjectBase * o ) [static]

Reimplemented from vtkObject.

virtual vtkObjectBase* vtkEncodedGradientShader::NewInstanceInternal ( ) const [protected, virtual]

Reimplemented from vtkObject.

vtkEncodedGradientShader* vtkEncodedGradientShader::NewInstance ( ) const

Reimplemented from vtkObject.

void vtkEncodedGradientShader::PrintSelf	(	ostream &	os,
		vtkIndent	indent
	)		`[virtual]`

Print the vtkEncodedGradientShader

Reimplemented from vtkObject.

virtual void vtkEncodedGradientShader::SetZeroNormalDiffuseIntensity ( float ) [virtual]

Set / Get the intensity diffuse / specular light used for the zero normals.

virtual float vtkEncodedGradientShader::GetZeroNormalDiffuseIntensity ( ) [virtual]

Set / Get the intensity diffuse / specular light used for the zero normals.

virtual void vtkEncodedGradientShader::SetZeroNormalSpecularIntensity ( float ) [virtual]

Set / Get the intensity diffuse / specular light used for the zero normals.

virtual float vtkEncodedGradientShader::GetZeroNormalSpecularIntensity ( ) [virtual]

Set / Get the intensity diffuse / specular light used for the zero normals.

void vtkEncodedGradientShader::UpdateShadingTable	(	vtkRenderer *	ren,
		vtkVolume *	vol,
		vtkEncodedGradientEstimator *	gradest
	)

Cause the shading table to be updated

float* vtkEncodedGradientShader::GetRedDiffuseShadingTable ( vtkVolume * vol )