/usr/include/vtk-6.3/vtkTensor.h is in libvtk6-dev 6.3.0+dfsg1-11build1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 | /*=========================================================================
Program: Visualization Toolkit
Module: vtkTensor.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 vtkTensor - supporting class to enable assignment and referencing of tensors
// .SECTION Description
// vtkTensor is a floating point representation of an nxn tensor. vtkTensor
// provides methods for assignment and reference of tensor components. It
// does it in such a way as to minimize data copying.
//
// .SECTION Caveats
// vtkTensor performs its operations using pointer reference. You are
// responsible for supplying data storage (if necessary) if local copies
// of data are being made.
#ifndef vtkTensor_h
#define vtkTensor_h
#include "vtkCommonDataModelModule.h" // For export macro
#include "vtkObject.h"
class VTKCOMMONDATAMODEL_EXPORT vtkTensor : public vtkObject
{
public:
static vtkTensor *New();
vtkTypeMacro(vtkTensor,vtkObject);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Initialize tensor components to 0.0.
void Initialize();
// Description:
// Get the tensor component (i,j).
double GetComponent(int i, int j) {return this->T[i+3*j];};
// Description:
// Set the value of the tensor component (i,j).
void SetComponent(int i, int j, double v) {if (i > 2 || j > 2) {vtkErrorMacro("trying to set tensor component i or j > 2: i = " << i << ", j = " << j); return;}; this->T[i+3*j] = v;};
// Description:
// Add to the value of the tensor component at location (i,j).
void AddComponent(int i, int j, double v) { if (i > 2 || j > 2) {vtkErrorMacro("trying to add tensor component i or j > 2: i = " << i << ", j = " << j); return;}; this->T[i+3*j] += v;};
// Description:
// Return column vector from tensor. (Assumes 2D matrix form and 0-offset.)
double *GetColumn(int j) { if (j > 2) {vtkErrorMacro("trying to get tensor column j > 2: j = " << j); return NULL;}; return this->T + 3*j;};
// Description:
// Deep copy of one tensor to another tensor.
void DeepCopy(vtkTensor *t);
// Description:
// Provide double * type conversion.
operator double*() {return this->T;};
// Description:
// Data member left public for efficiency.
double *T;
protected:
vtkTensor();
~vtkTensor() {}
double Storage[9];
private:
vtkTensor(const vtkTensor&); // Not implemented.
void operator=(const vtkTensor&); // Not implemented.
};
//----------------------------------------------------------------------------
inline void vtkTensor::Initialize()
{
for (int j=0; j<3; j++)
{
for (int i=0; i<3; i++)
{
this->T[i+j*3] = 0.0;
}
}
}
//----------------------------------------------------------------------------
inline void vtkTensor::DeepCopy(vtkTensor *t)
{
for (int j=0; j < 3; j++)
{
for (int i=0; i < 3; i++)
{
this->T[i+3*j] = t->T[i+3*j];
}
}
}
#endif
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