/usr/share/vtk/Array/Cxx/ArrayBasics.cxx is in vtk-examples 5.8.0-17.5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | #include <vtkArrayPrint.h>
#include <vtkDenseArray.h>
#include <vtkSparseArray.h>
int main(int vtkNotUsed(argc), char *vtkNotUsed(argv)[])
{
////////////////////////////////////////////////////////
// Creating N-Way Arrays
// Creating a dense array of 10 integers:
vtkDenseArray<vtkIdType>* array = vtkDenseArray<vtkIdType>::New();
array->Resize(10);
// Creating a dense 20 x 30 matrix:
vtkDenseArray<double>* matrix = vtkDenseArray<double>::New();
matrix->Resize(20, 30);
// Creating a sparse 10 x 20 x 30 x 40 tensor:
vtkArrayExtents extents;
extents.SetDimensions(4);
extents[0] = vtkArrayRange(0, 10);
extents[1] = vtkArrayRange(0, 20);
extents[2] = vtkArrayRange(0, 30);
extents[3] = vtkArrayRange(0, 40);
vtkSparseArray<vtkIdType>* tensor = vtkSparseArray<vtkIdType>::New();
tensor->Resize(extents);
////////////////////////////////////////////////////////
// Initializing N-Way Arrays
// Filling a dense array with ones:
array->Fill(1);
// Filling a dense matrix with zeros:
matrix->Fill(0.0);
// There's nothing to do for a sparse array - it's already empty.
////////////////////////////////////////////////////////
// Assigning N-Way Array Values
// Assign array value [5]:
array->SetValue(5, 42);
// Assign matrix value [4, 3]:
matrix->SetValue(4, 3, 1970);
// Assign tensor value [3, 7, 1, 2]:
vtkArrayCoordinates coordinates;
coordinates.SetDimensions(4);
coordinates[0] = 3;
coordinates[1] = 7;
coordinates[2] = 1;
coordinates[3] = 2;
tensor->SetValue(coordinates, 38);
////////////////////////////////////////////////////////
// Accessing N-Way Array Values
// Access array value [5]:
cout << "array[5]: " << array->GetValue(5) << "\n\n";
// Access matrix value [4, 3]:
cout << "matrix[4, 3]: " << matrix->GetValue(4, 3) << "\n\n";
// Access tensor value [3, 7, 1, 2]:
cout << "tensor[3, 7, 1, 2]: " << tensor->GetValue(coordinates) << "\n\n";
////////////////////////////////////////////////////////
// Printing N-Way Arrays
cout << "array:\n";
vtkPrintVectorFormat(cout, array);
cout << "\n";
cout << "matrix:\n";
vtkPrintMatrixFormat(cout, matrix);
cout << "\n";
cout << "tensor:\n";
vtkPrintCoordinateFormat(cout, tensor);
cout << "\n";
// Cleanup array instances ...
tensor->Delete();
matrix->Delete();
array->Delete();
return 0;
}
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