A utility class used by various contour filters. More...

#include <vtkContourHelper.h>

Public Member Functions
	vtkContourHelper (vtkIncrementalPointLocator locator, vtkCellArray outVerts, vtkCellArray outLines, vtkCellArray outPolys, vtkPointData inPd, vtkCellData inCd, vtkPointData outPd, vtkCellData outCd, int trisEstimatedSize, bool outputTriangles)
	Contour helper constructor.

	~vtkContourHelper ()=default

void	Contour (vtkCell cell, double value, vtkDataArray cellScalars, vtkIdType cellId)
	Generate contour for the given cell (and add it to the final result).

Detailed Description

A utility class used by various contour filters.

This is a simple utility class that can be used by various contour filters to produce either triangles and/or polygons based on the outputTriangles parameter. If outputTriangles is set to false, trisEstimatedSize is used to allocate memory for temporary triangles created by contouring before merging them. If outputTriangles is set to true, contouring triangles are outputted and trisEstimatedSize is not used.

When working with multidimensional dataset, it is needed to process cells from low to high dimensions.

See also: vtkContourGrid vtkCutter vtkContourFilter

Definition at line 35 of file vtkContourHelper.h.

Constructor & Destructor Documentation

◆ vtkContourHelper()

vtkContourHelper::vtkContourHelper	(	vtkIncrementalPointLocator *	locator,
		vtkCellArray *	outVerts,
		vtkCellArray *	outLines,
		vtkCellArray *	outPolys,
		vtkPointData *	inPd,
		vtkCellData *	inCd,
		vtkPointData *	outPd,
		vtkCellData *	outCd,
		int	trisEstimatedSize,
		bool	outputTriangles
	)

Contour helper constructor.

Parameters

locator	Locator used to "carry" and merge contour points (avoid duplicates)
outVerts	Contour vertices, incremented at each Contour call
outLines	Contour lines, incremented at each Contour call
outPolys	Contour polys, incremented at each Contour call
inPd	Input point data, that will be interpolated on output contour point data
inCd	Input cell data, that will be copied on output contour cell data
outPd	If not nullptr, will contains contour point data, interpolated from inPd
outCd	If not nullptr, will contains contour cell data, copied from inCd
trisEstimatedSize	used to allocate memory for temporary triangles created by contouring before merging them. Only used if outputTriangles is true.
outputTriangles	if true, the contour helper will output triangles directly and will not merge them.

◆ ~vtkContourHelper()

vtkContourHelper::~vtkContourHelper ( )

default

Member Function Documentation

◆ Contour()

void vtkContourHelper::Contour	(	vtkCell *	cell,
		double	value,
		vtkDataArray *	cellScalars,
		vtkIdType	cellId
	)

Generate contour for the given cell (and add it to the final result).