/usr/include/vtk-5.8/vtkHyperOctreeCutter.h is in libvtk5-dev 5.8.0-5.
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Program: Visualization Toolkit
Module: vtkHyperOctreeCutter.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
// .NAME vtkHyperOctreeCutter - Cut vtkHyperOctree with user-specified
// implicit function
// .SECTION Description
// vtkHyperOctreeCutter is a filter to cut through data using any subclass of
// vtkImplicitFunction. That is, a polygonal surface is created
// corresponding to the implicit function F(x,y,z) = value(s), where
// you can specify one or more values used to cut with.
//
// In VTK, cutting means reducing a cell of dimension N to a cut surface
// of dimension N-1. For example, a tetrahedron when cut by a plane (i.e.,
// vtkPlane implicit function) will generate triangles. (In comparison,
// clipping takes a N dimensional cell and creates N dimension primitives.)
//
// vtkHyperOctreeCutter is generally used to "slice-through" a dataset,
// generating a surface that can be visualized. It is also possible to use
// vtkHyperOctreeCutter to do a form of volume rendering. vtkHyperOctreeCutter
// does this by generating multiple cut surfaces (usually planes) which are
// ordered (and rendered) from back-to-front. The surfaces are set translucent
// to give a volumetric rendering effect.
//
// Note that data can be cut using either 1) the scalar values associated
// with the dataset or 2) an implicit function associated with this class.
// By default, if an implicit function is set it is used to cut the data
// set, otherwise the dataset scalars are used to perform the cut.
// .SECTION See Also
// vtkImplicitFunction vtkHyperOctree
#ifndef __vtkHyperOctreeCutter_h
#define __vtkHyperOctreeCutter_h
#include "vtkPolyDataAlgorithm.h"
#include "vtkContourValues.h" // Needed for inline methods
#include "vtkCutter.h" // for VTK_SORT_BY_VALUE and VTK_SORT_BY_CELL
//#define VTK_SORT_BY_VALUE 0
//#define VTK_SORT_BY_CELL 1
// This does not really belong here, ut it is for a temporary
// fix until this filter can be converted to geernate unstructured grids.
//#define VTK_NUMBER_OF_CELL_TYPES 68
class vtkImplicitFunction;
class vtkIncrementalPointLocator;
class vtkHyperOctree;
class vtkOrderedTriangulator;
class vtkHyperOctreeCursor;
class vtkTetra;
class vtkDataSetAttributes;
class vtkHyperOctreeClipCutPointsGrabber;
class VTK_GRAPHICS_EXPORT vtkHyperOctreeCutter : public vtkPolyDataAlgorithm
{
public:
vtkTypeMacro(vtkHyperOctreeCutter,vtkPolyDataAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Construct with user-specified implicit function; initial value of 0.0; and
// generating cut scalars turned off.
static vtkHyperOctreeCutter *New();
// Description:
// Set a particular contour value at contour number i. The index i ranges
// between 0<=i<NumberOfContours.
void SetValue(int i, double value)
{this->ContourValues->SetValue(i,value);}
// Description:
// Get the ith contour value.
double GetValue(int i)
{return this->ContourValues->GetValue(i);}
// Description:
// Get a pointer to an array of contour values. There will be
// GetNumberOfContours() values in the list.
double *GetValues()
{return this->ContourValues->GetValues();}
// Description:
// Fill a supplied list with contour values. There will be
// GetNumberOfContours() values in the list. Make sure you allocate
// enough memory to hold the list.
void GetValues(double *contourValues)
{this->ContourValues->GetValues(contourValues);}
// Description:
// Set the number of contours to place into the list. You only really
// need to use this method to reduce list size. The method SetValue()
// will automatically increase list size as needed.
void SetNumberOfContours(int number)
{this->ContourValues->SetNumberOfContours(number);}
// Description:
// Get the number of contours in the list of contour values.
int GetNumberOfContours()
{return this->ContourValues->GetNumberOfContours();}
// Description:
// Generate numContours equally spaced contour values between specified
// range. Contour values will include min/max range values.
void GenerateValues(int numContours, double range[2])
{this->ContourValues->GenerateValues(numContours, range);}
// Description:
// Generate numContours equally spaced contour values between specified
// range. Contour values will include min/max range values.
void GenerateValues(int numContours, double rangeStart, double rangeEnd)
{this->ContourValues->GenerateValues(numContours, rangeStart, rangeEnd);}
// Description:
// Override GetMTime because we delegate to vtkContourValues and refer to
// vtkImplicitFunction.
unsigned long GetMTime();
// Description
// Specify the implicit function to perform the cutting.
virtual void SetCutFunction(vtkImplicitFunction*);
vtkGetObjectMacro(CutFunction,vtkImplicitFunction);
// Description:
// If this flag is enabled, then the output scalar values will be
// interpolated from the implicit function values, and not the input scalar
// data.
vtkSetMacro(GenerateCutScalars,int);
vtkGetMacro(GenerateCutScalars,int);
vtkBooleanMacro(GenerateCutScalars,int);
// Description:
// Specify a spatial locator for merging points. By default,
// an instance of vtkMergePoints is used.
void SetLocator(vtkIncrementalPointLocator *locator);
vtkGetObjectMacro(Locator,vtkIncrementalPointLocator);
// Description:
// Set the sorting order for the generated polydata. There are two
// possibilities:
// Sort by value = 0 - This is the most efficient sort. For each cell,
// all contour values are processed. This is the default.
// Sort by cell = 1 - For each contour value, all cells are processed.
// This order should be used if the extracted polygons must be rendered
// in a back-to-front or front-to-back order. This is very problem
// dependent.
// For most applications, the default order is fine (and faster).
//
// Sort by cell is going to have a problem if the input has 2D and 3D cells.
// Cell data will be scrambled becauses with
// vtkPolyData output, verts and lines have lower cell ids than triangles.
vtkSetClampMacro(SortBy,int,VTK_SORT_BY_VALUE,VTK_SORT_BY_CELL);
vtkGetMacro(SortBy,int);
void SetSortByToSortByValue()
{this->SetSortBy(VTK_SORT_BY_VALUE);}
void SetSortByToSortByCell()
{this->SetSortBy(VTK_SORT_BY_CELL);}
// Description:
// Return the sorting procedure as a descriptive character string.
const char *GetSortByAsString()
{
if ( this->SortBy == VTK_SORT_BY_VALUE )
{
return "SortByValue";
}
else
{
return "SortByCell";
}
}
// Description:
// Create default locator. Used to create one when none is specified. The
// locator is used to merge coincident points.
void CreateDefaultLocator();
protected:
vtkHyperOctreeCutter(vtkImplicitFunction *cf=NULL);
~vtkHyperOctreeCutter();
virtual int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
virtual int RequestUpdateExtent(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
virtual int FillInputPortInformation(int port, vtkInformation *info);
// Description:
// Cut the sub-hierarchy pointed by cursor.
// \pre cursor_exists: cursor!=0
// \pre positive_level: level>=0
void CutNode(vtkHyperOctreeCursor *cursor,
int level,
double bounds[6]);
vtkImplicitFunction *CutFunction;
vtkIncrementalPointLocator *Locator;
int SortBy;
vtkContourValues *ContourValues;
int GenerateCutScalars;
vtkHyperOctree *Input;
vtkPolyData *Output;
vtkCellArray *NewVerts;
vtkCellArray *NewLines;
vtkCellArray *NewPolys;
vtkDataSetAttributes *InCD;
vtkCellData *OutCD;
vtkPointData *OutPD;
vtkOrderedTriangulator *Triangulator;
vtkHyperOctreeCursor *Sibling; // to avoid allocation in the loop
int Iter; // iterate over contour values in case of VTK_SORT_BY_CELL
vtkDoubleArray *CellScalars;
vtkTetra *Tetra;
vtkDoubleArray *TetScalars;
vtkPoints *Pts;
vtkPolygon *Polygon;
vtkIdType CellTypeCounter[65536]; // up-to-65536 points per octant
vtkIdType TotalCounter;
vtkIdType TemplateCounter; // record the number of octants that succceed
// to use the template triangulator
// in VTK_SORT_BY_VALUE case, rejection test need to combine all values.
int *AllLess;
int *AllGreater;
vtkHyperOctreeClipCutPointsGrabber *Grabber;
private:
vtkHyperOctreeCutter(const vtkHyperOctreeCutter&); // Not implemented.
void operator=(const vtkHyperOctreeCutter&); // Not implemented.
};
#endif
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