generate texture coordinates by mapping points to sphere More...

#include <vtkTextureMapToSphere.h>

Inheritance diagram for vtkTextureMapToSphere:

Collaboration diagram for vtkTextureMapToSphere:

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

virtual void	SetCenter (double, double, double)
virtual void	SetCenter (double[3])
virtual double *	GetCenter ()
virtual void	GetCenter (double data[3])

virtual void	SetAutomaticSphereGeneration (int)
virtual int	GetAutomaticSphereGeneration ()
virtual void	AutomaticSphereGenerationOn ()
virtual void	AutomaticSphereGenerationOff ()

virtual void	SetPreventSeam (int)
virtual int	GetPreventSeam ()
virtual void	PreventSeamOn ()
virtual void	PreventSeamOff ()
Static Public Member Functions
static int	IsTypeOf (const char *type)
static vtkTextureMapToSphere *	SafeDownCast (vtkObject *o)
static vtkTextureMapToSphere *	New ()
Protected Member Functions
	vtkTextureMapToSphere ()
	~vtkTextureMapToSphere ()
int	RequestData (vtkInformation , vtkInformationVector , vtkInformationVector )
Protected Attributes
double	Center [3]
int	AutomaticSphereGeneration
int	PreventSeam

Detailed Description

generate texture coordinates by mapping points to sphere

vtkTextureMapToSphere is a filter that generates 2D texture coordinates by mapping input dataset points onto a sphere. The sphere can either be user specified or generated automatically. (The sphere is generated automatically by computing the center (i.e., averaged coordinates) of the sphere.) Note that the generated texture coordinates range between (0,1). The s-coordinate lies in the angular direction around the z-axis, measured counter-clockwise from the x-axis. The t-coordinate lies in the angular direction measured down from the north pole towards the south pole.

A special ivar controls how the s-coordinate is generated. If PreventSeam is set to true, the s-texture varies from 0->1 and then 1->0 (corresponding to angles of 0->180 and 180->360).

Warning:: The resulting texture coordinates will lie between (0,1), and the texture coordinates are determined with respect to the modeler's x-y-z coordinate system. Use the class vtkTransformTextureCoords to linearly scale and shift the origin of the texture coordinates (if necessary).

See also:: vtkTextureMapToPlane vtkTextureMapToCylinder vtkTransformTexture vtkThresholdTextureCoords

Examples:: vtkTextureMapToSphere (Examples)

Tests:: vtkTextureMapToSphere (Tests)

Definition at line 54 of file vtkTextureMapToSphere.h.

Member Typedef Documentation

typedef vtkDataSetAlgorithm vtkTextureMapToSphere::Superclass

Reimplemented from vtkDataSetAlgorithm.

Definition at line 57 of file vtkTextureMapToSphere.h.

Constructor & Destructor Documentation

vtkTextureMapToSphere::vtkTextureMapToSphere ( ) [protected]

vtkTextureMapToSphere::~vtkTextureMapToSphere ( ) [inline, protected]

Definition at line 90 of file vtkTextureMapToSphere.h.

Member Function Documentation

virtual const char* vtkTextureMapToSphere::GetClassName ( ) [virtual]

Reimplemented from vtkDataSetAlgorithm.

static int vtkTextureMapToSphere::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 vtkDataSetAlgorithm.

virtual int vtkTextureMapToSphere::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 vtkDataSetAlgorithm.

static vtkTextureMapToSphere* vtkTextureMapToSphere::SafeDownCast ( vtkObject * o ) [static]

Reimplemented from vtkDataSetAlgorithm.

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

Methods invoked by print to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.

Reimplemented from vtkDataSetAlgorithm.

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

Create object with Center (0,0,0) and the PreventSeam ivar is set to true. The sphere center is automatically computed.

Reimplemented from vtkDataSetAlgorithm.

virtual void vtkTextureMapToSphere::SetCenter	(	double	,
		double	,
		double
	)		`[virtual]`

Specify a point defining the center of the sphere.

virtual void vtkTextureMapToSphere::SetCenter ( double [3] ) [virtual]

Specify a point defining the center of the sphere.

virtual double* vtkTextureMapToSphere::GetCenter ( ) [virtual]

Specify a point defining the center of the sphere.

virtual void vtkTextureMapToSphere::GetCenter ( double data[3] ) [virtual]

Specify a point defining the center of the sphere.

virtual void vtkTextureMapToSphere::SetAutomaticSphereGeneration ( int ) [virtual]

Turn on/off automatic sphere generation. This means it automatically finds the sphere center.

virtual int vtkTextureMapToSphere::GetAutomaticSphereGeneration ( ) [virtual]

Turn on/off automatic sphere generation. This means it automatically finds the sphere center.

virtual void vtkTextureMapToSphere::AutomaticSphereGenerationOn ( ) [virtual]

Turn on/off automatic sphere generation. This means it automatically finds the sphere center.

virtual void vtkTextureMapToSphere::AutomaticSphereGenerationOff ( ) [virtual]

Turn on/off automatic sphere generation. This means it automatically finds the sphere center.

virtual void vtkTextureMapToSphere::SetPreventSeam ( int ) [virtual]

Control how the texture coordinates are generated. If PreventSeam is set, the s-coordinate ranges from 0->1 and 1->0 corresponding to the theta angle variation between 0->180 and 180->0 degrees. Otherwise, the s-coordinate ranges from 0->1 between 0->360 degrees.

virtual int vtkTextureMapToSphere::GetPreventSeam ( ) [virtual]

Control how the texture coordinates are generated. If PreventSeam is set, the s-coordinate ranges from 0->1 and 1->0 corresponding to the theta angle variation between 0->180 and 180->0 degrees. Otherwise, the s-coordinate ranges from 0->1 between 0->360 degrees.

virtual void vtkTextureMapToSphere::PreventSeamOn ( ) [virtual]

Control how the texture coordinates are generated. If PreventSeam is set, the s-coordinate ranges from 0->1 and 1->0 corresponding to the theta angle variation between 0->180 and 180->0 degrees. Otherwise, the s-coordinate ranges from 0->1 between 0->360 degrees.

virtual void vtkTextureMapToSphere::PreventSeamOff ( ) [virtual]

Control how the texture coordinates are generated. If PreventSeam is set, the s-coordinate ranges from 0->1 and 1->0 corresponding to the theta angle variation between 0->180 and 180->0 degrees. Otherwise, the s-coordinate ranges from 0->1 between 0->360 degrees.

int vtkTextureMapToSphere::RequestData	(	vtkInformation *	,
		vtkInformationVector **	,
		vtkInformationVector *
	)		`[protected, virtual]`

This is called within ProcessRequest when a request asks the algorithm to do its work. This is the method you should override to do whatever the algorithm is designed to do. This happens during the fourth pass in the pipeline execution process.

Reimplemented from vtkDataSetAlgorithm.