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99 lines
3.5 KiB
99 lines
3.5 KiB
/*=========================================================================
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Program: Visualization Toolkit
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Module: $RCSfile: vtkVoxelContoursToSurfaceFilter.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 vtkVoxelContoursToSurfaceFilter - create surface from contours
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// .SECTION Description
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// vtkVoxelContoursToSurfaceFilter is a filter that takes contours and
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// produces surfaces. There are some restrictions for the contours:
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//
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// - The contours are input as vtkPolyData, with the contours being
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// polys in the vtkPolyData.
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// - The contours lie on XY planes - each contour has a constant Z
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// - The contours are ordered in the polys of the vtkPolyData such
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// that all contours on the first (lowest) XY plane are first, then
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// continuing in order of increasing Z value.
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// - The X, Y and Z coordinates are all integer values.
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// - The desired sampling of the contour data is 1x1x1 - Aspect can
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// be used to control the aspect ratio in the output polygonal
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// dataset.
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//
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// This filter takes the contours and produces a structured points
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// dataset of signed floating point number indicating distance from
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// a contour. A contouring filter is then applied to generate 3D
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// surfaces from a stack of 2D contour distance slices. This is
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// done in a streaming fashion so as not to use to much memory.
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// .SECTION See Also
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// vtkPolyDataAlgorithm
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#ifndef __vtkVoxelContoursToSurfaceFilter_h
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#define __vtkVoxelContoursToSurfaceFilter_h
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#include "vtkPolyDataAlgorithm.h"
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class VTK_GRAPHICS_EXPORT vtkVoxelContoursToSurfaceFilter : public vtkPolyDataAlgorithm
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{
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public:
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static vtkVoxelContoursToSurfaceFilter *New();
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vtkTypeRevisionMacro(vtkVoxelContoursToSurfaceFilter,vtkPolyDataAlgorithm);
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void PrintSelf(ostream& os, vtkIndent indent);
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// Description:
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// Set / Get the memory limit in bytes for this filter. This is the limit
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// of the size of the structured points data set that is created for
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// intermediate processing. The data will be streamed through this volume
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// in as many pieces as necessary.
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vtkSetMacro( MemoryLimitInBytes, int );
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vtkGetMacro( MemoryLimitInBytes, int );
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vtkSetVector3Macro( Spacing, double );
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vtkGetVectorMacro( Spacing, double, 3 );
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protected:
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vtkVoxelContoursToSurfaceFilter();
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~vtkVoxelContoursToSurfaceFilter();
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int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
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int MemoryLimitInBytes;
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double Spacing[3];
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double *LineList;
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int LineListLength;
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int LineListSize;
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double *SortedXList;
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double *SortedYList;
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int SortedListSize;
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int *WorkingList;
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int WorkingListLength;
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double *IntersectionList;
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int IntersectionListLength;
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void AddLineToLineList( double x1, double y1, double x2, double y2 );
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void SortLineList();
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void CastLines( float *slice, double gridOrigin[3],
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int gridSize[3], int type );
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void PushDistances( float *ptr, int gridSize[3], int chunkSize );
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private:
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vtkVoxelContoursToSurfaceFilter(const vtkVoxelContoursToSurfaceFilter&); // Not implemented.
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void operator=(const vtkVoxelContoursToSurfaceFilter&); // Not implemented.
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};
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#endif
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