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102 lines
3.4 KiB
102 lines
3.4 KiB
/*=========================================================================
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Program: Visualization Toolkit
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Module: $RCSfile: vtkMassProperties.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 vtkMassProperties - estimate volume, area, shape index of triangle mesh
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// .SECTION Description
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// vtkMassProperties estimates the volume, the surface area, and the
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// normalized shape index of a triangle mesh. The algorithm
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// implemented here is based on the discrete form of the divergence
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// theorem. The general assumption here is that the model is of
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// closed surface. For more details see the following reference
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// (Alyassin A.M. et al, "Evaluation of new algorithms for the
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// interactive measurement of surface area and volume", Med Phys 21(6)
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// 1994.).
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// .SECTION Caveats
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// Currently only triangles are processed. Use vtkTriangleFilter to
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// convert any strips or polygons to triangles.
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// .SECTION See Also
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// vtkTriangleFilter
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#ifndef __vtkMassProperties_h
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#define __vtkMassProperties_h
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#include "vtkPolyDataAlgorithm.h"
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class VTK_GRAPHICS_EXPORT vtkMassProperties : public vtkPolyDataAlgorithm
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{
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public:
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// Description:
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// Constructs with initial values of zero.
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static vtkMassProperties *New();
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vtkTypeRevisionMacro(vtkMassProperties,vtkPolyDataAlgorithm);
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void PrintSelf(ostream& os, vtkIndent indent);
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// Description:
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// Compute and return the volume.
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double GetVolume() {this->Update(); return this->Volume;}
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// Description:
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// Compute and return the volume projected on to each axis aligned plane.
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double GetVolumeX() {this->Update(); return this->VolumeX;}
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double GetVolumeY() {this->Update(); return this->VolumeY;}
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double GetVolumeZ() {this->Update(); return this->VolumeZ;}
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// Description:
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// Compute and return the weighting factors for the maximum unit
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// normal component (MUNC).
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double GetKx() {this->Update(); return this->Kx;}
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double GetKy() {this->Update(); return this->Ky;}
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double GetKz() {this->Update(); return this->Kz;}
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// Description:
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// Compute and return the area.
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double GetSurfaceArea() {this->Update(); return this->SurfaceArea;}
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// Description:
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// Compute and return the normalized shape index. This characterizes the
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// deviation of the shape of an object from a sphere. A sphere's NSI
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// is one. This number is always >= 1.0.
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double GetNormalizedShapeIndex()
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{this->Update(); return this->NormalizedShapeIndex;}
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protected:
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vtkMassProperties();
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~vtkMassProperties();
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virtual int RequestData(vtkInformation* request,
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vtkInformationVector** inputVector,
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vtkInformationVector* outputVector);
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double SurfaceArea;
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double Volume;
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double VolumeX;
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double VolumeY;
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double VolumeZ;
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double Kx;
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double Ky;
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double Kz;
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double NormalizedShapeIndex;
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vtkTimeStamp ExecuteTime;
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private:
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vtkMassProperties(const vtkMassProperties&); // Not implemented.
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void operator=(const vtkMassProperties&); // Not implemented.
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};
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#endif
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