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147 lines
4.9 KiB
147 lines
4.9 KiB
/*=========================================================================
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Program: Visualization Toolkit
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Module: $RCSfile: vtkExtractUnstructuredGrid.h,v $
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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// .NAME vtkExtractUnstructuredGrid - extract subset of unstructured grid geometry
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// .SECTION Description
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// vtkExtractUnstructuredGrid is a general-purpose filter to
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// extract geometry (and associated data) from an unstructured grid
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// dataset. The extraction process is controlled by specifying a range
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// of point ids, cell ids, or a bounding box (referred to as "Extent").
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// Those cells lying within these regions are sent to the output.
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// The user has the choice of merging coincident points (Merging is on)
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// or using the original point set (Merging is off).
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// .SECTION Caveats
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// If merging is off, the input points are copied through to the
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// output. This means unused points may be present in the output data.
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// If merging is on, then coincident points with different point attribute
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// values are merged.
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// .SECTION See Also
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// vtkImageDataGeometryFilter vtkStructuredGridGeometryFilter
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// vtkRectilinearGridGeometryFilter
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// vtkExtractGeometry vtkExtractVOI
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#ifndef __vtkExtractUnstructuredGrid_h
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#define __vtkExtractUnstructuredGrid_h
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#include "vtkUnstructuredGridAlgorithm.h"
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class vtkPointLocator;
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class VTK_GRAPHICS_EXPORT vtkExtractUnstructuredGrid : public vtkUnstructuredGridAlgorithm
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{
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public:
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vtkTypeRevisionMacro(vtkExtractUnstructuredGrid,vtkUnstructuredGridAlgorithm);
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void PrintSelf(ostream& os, vtkIndent indent);
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// Description:
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// Construct with all types of clipping turned off.
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static vtkExtractUnstructuredGrid *New();
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// Description:
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// Turn on/off selection of geometry by point id.
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vtkSetMacro(PointClipping,int);
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vtkGetMacro(PointClipping,int);
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vtkBooleanMacro(PointClipping,int);
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// Description:
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// Turn on/off selection of geometry by cell id.
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vtkSetMacro(CellClipping,int);
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vtkGetMacro(CellClipping,int);
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vtkBooleanMacro(CellClipping,int);
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// Description:
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// Turn on/off selection of geometry via bounding box.
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vtkSetMacro(ExtentClipping,int);
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vtkGetMacro(ExtentClipping,int);
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vtkBooleanMacro(ExtentClipping,int);
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// Description:
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// Specify the minimum point id for point id selection.
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vtkSetClampMacro(PointMinimum,vtkIdType,0,VTK_LARGE_ID);
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vtkGetMacro(PointMinimum,vtkIdType);
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// Description:
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// Specify the maximum point id for point id selection.
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vtkSetClampMacro(PointMaximum,vtkIdType,0,VTK_LARGE_ID);
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vtkGetMacro(PointMaximum,vtkIdType);
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// Description:
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// Specify the minimum cell id for point id selection.
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vtkSetClampMacro(CellMinimum,vtkIdType,0,VTK_LARGE_ID);
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vtkGetMacro(CellMinimum,vtkIdType);
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// Description:
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// Specify the maximum cell id for point id selection.
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vtkSetClampMacro(CellMaximum,vtkIdType,0,VTK_LARGE_ID);
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vtkGetMacro(CellMaximum,vtkIdType);
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// Description:
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// Specify a (xmin,xmax, ymin,ymax, zmin,zmax) bounding box to clip data.
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void SetExtent(double xMin, double xMax, double yMin, double yMax,
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double zMin, double zMax);
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// Description:
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// Set / get a (xmin,xmax, ymin,ymax, zmin,zmax) bounding box to clip data.
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void SetExtent(double extent[6]);
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double *GetExtent() { return this->Extent;};
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// Description:
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// Turn on/off merging of coincident points. Note that is merging is
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// on, points with different point attributes (e.g., normals) are merged,
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// which may cause rendering artifacts.
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vtkSetMacro(Merging,int);
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vtkGetMacro(Merging,int);
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vtkBooleanMacro(Merging,int);
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// Description:
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// Set / get a spatial locator for merging points. By
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// default an instance of vtkMergePoints is used.
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void SetLocator(vtkPointLocator *locator);
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vtkGetObjectMacro(Locator,vtkPointLocator);
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// Description:
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// Create default locator. Used to create one when none is specified.
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void CreateDefaultLocator();
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// Description:
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// Return the MTime also considering the locator.
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unsigned long GetMTime();
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protected:
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vtkExtractUnstructuredGrid();
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~vtkExtractUnstructuredGrid() {};
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virtual int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
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vtkIdType PointMinimum;
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vtkIdType PointMaximum;
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vtkIdType CellMinimum;
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vtkIdType CellMaximum;
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double Extent[6];
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int PointClipping;
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int CellClipping;
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int ExtentClipping;
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int Merging;
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vtkPointLocator *Locator;
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private:
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vtkExtractUnstructuredGrid(const vtkExtractUnstructuredGrid&); // Not implemented.
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void operator=(const vtkExtractUnstructuredGrid&); // Not implemented.
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};
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#endif
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