vtkImageStencilRaster Class Reference

This is a helper class for stencil creation. More...

#include <vtkImageStencilData.h>

Public Member Functions
	vtkImageStencilRaster (const int wholeExtent[2])
	Create a raster with the specified whole y extent.
	~vtkImageStencilRaster ()
	Destructor.
void	PrepareForNewData (const int allocateExtent[2]=nullptr)
	Reset the raster to its original state, but keep the same whole extent.
void	FillStencilData (vtkImageStencilData *data, const int extent[6], int xj=0, int yj=1)
	Fill the specified extent of a vtkImageStencilData with the raster, after permuting the raster according to xj and yj.
void	SetTolerance (double tol)
	The tolerance for float-to-int conversions.
double	GetTolerance ()
void	InsertLine (const double pt1[2], const double pt2[2])
	Insert a line into the raster, given the two end points.

Protected Member Functions
void	PrepareExtent (int ymin, int ymax)
	Ensure that the raster is initialized for the specified range of y values, which must be within the Extent.
void	InsertPoint (int y, double x, int i)
	Insert an x point into the raster.

Protected Attributes
int	Extent [2]
int	UsedExtent [2]
double **	Raster
double	Tolerance

Detailed Description

This is a helper class for stencil creation.

It is a raster with infinite resolution in the X direction (approximately, since it uses double precision). Lines that represent polygon edges can be drawn into this raster, and then filled given a tolerance.

Definition at line 238 of file vtkImageStencilData.h.

Constructor & Destructor Documentation

vtkImageStencilRaster()

vtkImageStencilRaster::vtkImageStencilRaster

(

const int

wholeExtent[2]

)

Create a raster with the specified whole y extent.

~vtkImageStencilRaster()

vtkImageStencilRaster::~vtkImageStencilRaster

(

)

Destructor.

Member Function Documentation

PrepareForNewData()

void vtkImageStencilRaster::PrepareForNewData

(

const int

allocateExtent[2] = nullptr

)

Reset the raster to its original state, but keep the same whole extent.

Pre-allocate the specified 1D allocateExtent, which must be within the whole extent.

InsertLine()

void vtkImageStencilRaster::InsertLine	(	const double	pt1[2],
		const double	pt2[2]
	)

Insert a line into the raster, given the two end points.

FillStencilData()

void vtkImageStencilRaster::FillStencilData	(	vtkImageStencilData *	data,
		const int	extent[6],
		int	xj = 0,
		int	yj = 1
	)

Fill the specified extent of a vtkImageStencilData with the raster, after permuting the raster according to xj and yj.

SetTolerance()

void vtkImageStencilRaster::SetTolerance ( double  tol )

inline

The tolerance for float-to-int conversions.

Definition at line 274 of file vtkImageStencilData.h.

GetTolerance()

double vtkImageStencilRaster::GetTolerance ( )

inline

Definition at line 275 of file vtkImageStencilData.h.

PrepareExtent()

void vtkImageStencilRaster::PrepareExtent ( int  ymin, int  ymax  )

protected

Ensure that the raster is initialized for the specified range of y values, which must be within the Extent.

InsertPoint()

void vtkImageStencilRaster::InsertPoint ( int  y, double  x, int  i  )

protected

Insert an x point into the raster.

If the y value is larger than the y extent, the extent will grow automatically. The parameter i indicates which of the two internal rasters is to be used.

Member Data Documentation

Extent

int vtkImageStencilRaster::Extent[2]

protected

Definition at line 291 of file vtkImageStencilData.h.

UsedExtent

int vtkImageStencilRaster::UsedExtent[2]

protected

Definition at line 292 of file vtkImageStencilData.h.

Raster

double** vtkImageStencilRaster::Raster

protected

Definition at line 293 of file vtkImageStencilData.h.

Tolerance

double vtkImageStencilRaster::Tolerance

protected

Definition at line 294 of file vtkImageStencilData.h.

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

• Imaging/Core/vtkImageStencilData.h