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119 lines
3.3 KiB
C
119 lines
3.3 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkPointLoad.h
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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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/**
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* @class vtkPointLoad
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* @brief compute stress tensors given point load on semi-infinite domain
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*
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* vtkPointLoad is a source object that computes stress tensors on a volume.
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* The tensors are computed from the application of a point load on a
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* semi-infinite domain. (The analytical results are adapted from Saada - see
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* text.) It also is possible to compute effective stress scalars if desired.
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* This object serves as a specialized data generator for some of the examples
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* in the text.
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*
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* @sa
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* vtkTensorGlyph, vtkHyperStreamline
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*/
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#ifndef vtkPointLoad_h
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#define vtkPointLoad_h
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#include "vtkImagingHybridModule.h" // For export macro
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#include "vtkImageAlgorithm.h"
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class VTKIMAGINGHYBRID_EXPORT vtkPointLoad : public vtkImageAlgorithm
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{
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public:
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vtkTypeMacro(vtkPointLoad,vtkImageAlgorithm);
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void PrintSelf(ostream& os, vtkIndent indent);
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/**
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* Construct with ModelBounds=(-1,1,-1,1,-1,1), SampleDimensions=(50,50,50),
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* and LoadValue = 1.
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*/
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static vtkPointLoad *New();
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//@{
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/**
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* Set/Get value of applied load.
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*/
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vtkSetMacro(LoadValue,double);
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vtkGetMacro(LoadValue,double);
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//@}
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/**
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* Specify the dimensions of the volume. A stress tensor will be computed for
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* each point in the volume.
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*/
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void SetSampleDimensions(int i, int j, int k);
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//@{
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/**
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* Specify the dimensions of the volume. A stress tensor will be computed for
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* each point in the volume.
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*/
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void SetSampleDimensions(int dim[3]);
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vtkGetVectorMacro(SampleDimensions,int,3);
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//@}
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//@{
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/**
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* Specify the region in space over which the tensors are computed. The point
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* load is assumed to be applied at top center of the volume.
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*/
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vtkSetVector6Macro(ModelBounds,double);
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vtkGetVectorMacro(ModelBounds,double,6);
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//@}
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//@{
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/**
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* Set/Get Poisson's ratio.
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*/
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vtkSetMacro(PoissonsRatio,double);
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vtkGetMacro(PoissonsRatio,double);
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//@}
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/**
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* Turn on/off computation of effective stress scalar. These methods do
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* nothing. The effective stress is always computed.
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*/
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void SetComputeEffectiveStress(int) {}
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int GetComputeEffectiveStress() {return 1;};
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void ComputeEffectiveStressOn() {}
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void ComputeEffectiveStressOff() {}
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protected:
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vtkPointLoad();
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~vtkPointLoad() {}
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virtual int RequestInformation (vtkInformation *,
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vtkInformationVector **,
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vtkInformationVector *);
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virtual void ExecuteDataWithInformation(vtkDataObject *, vtkInformation *);
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double LoadValue;
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double PoissonsRatio;
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int SampleDimensions[3];
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double ModelBounds[6];
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private:
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vtkPointLoad(const vtkPointLoad&) VTK_DELETE_FUNCTION;
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void operator=(const vtkPointLoad&) VTK_DELETE_FUNCTION;
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};
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#endif
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