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/*=========================================================================
Program: Visualization Toolkit
Module: ArrayTableToSparseArray.cxx
-------------------------------------------------------------------------
Copyright 2008 Sandia Corporation.
Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
the U.S. Government retains certain rights in this software.
-------------------------------------------------------------------------
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.
=========================================================================*/
#include <vtkArrayData.h>
#include <vtkArrayPrint.h>
#include <vtkDoubleArray.h>
#include <vtkIdTypeArray.h>
#include <vtkSmartPointer.h>
#include <vtkSparseArray.h>
#include <vtkTable.h>
#include <vtkTableToSparseArray.h>
#include <iostream>
#include <stdexcept>
#define test_expression(expression) \
{ \
if(!(expression)) \
throw std::runtime_error("Expression failed: " #expression); \
}
int ArrayTableToSparseArray(int vtkNotUsed(argc), char *vtkNotUsed(argv)[])
{
try
{
// Generate an input table ...
vtkSmartPointer<vtkIdTypeArray> i = vtkSmartPointer<vtkIdTypeArray>::New();
i->SetName("i");
vtkSmartPointer<vtkIdTypeArray> j = vtkSmartPointer<vtkIdTypeArray>::New();
j->SetName("j");
vtkSmartPointer<vtkIdTypeArray> k = vtkSmartPointer<vtkIdTypeArray>::New();
k->SetName("k");
vtkSmartPointer<vtkDoubleArray> value = vtkSmartPointer<vtkDoubleArray>::New();
value->SetName("value");
vtkSmartPointer<vtkTable> table = vtkSmartPointer<vtkTable>::New();
table->AddColumn(i);
table->AddColumn(j);
table->AddColumn(k);
table->AddColumn(value);
table->InsertNextBlankRow();
table->SetValue(0, 0, 0);
table->SetValue(0, 1, 0);
table->SetValue(0, 2, 0);
table->SetValue(0, 3, 1);
table->InsertNextBlankRow();
table->SetValue(1, 0, 1);
table->SetValue(1, 1, 2);
table->SetValue(1, 2, 3);
table->SetValue(1, 3, 2);
table->InsertNextBlankRow();
table->SetValue(2, 0, 4);
table->SetValue(2, 1, 5);
table->SetValue(2, 2, 6);
table->SetValue(2, 3, 3);
// Run it through vtkTableToSparseArray ...
vtkSmartPointer<vtkTableToSparseArray> source = vtkSmartPointer<vtkTableToSparseArray>::New();
source->SetInputData(table);
source->AddCoordinateColumn("i");
source->AddCoordinateColumn("j");
source->AddCoordinateColumn("k");
source->SetValueColumn("value");
source->Update();
{
vtkSparseArray<double>* const sparse_array = vtkSparseArray<double>::SafeDownCast(
source->GetOutput()->GetArray(static_cast<vtkIdType>(0)));
test_expression(sparse_array);
sparse_array->Print(std::cerr);
test_expression(sparse_array->GetExtent(0) == vtkArrayRange(0, 5));
test_expression(sparse_array->GetExtent(1) == vtkArrayRange(0, 6));
test_expression(sparse_array->GetExtent(2) == vtkArrayRange(0, 7));
test_expression(sparse_array->GetValue(vtkArrayCoordinates(0, 0, 0)) == 1);
test_expression(sparse_array->GetValue(vtkArrayCoordinates(1, 2, 3)) == 2);
test_expression(sparse_array->GetValue(vtkArrayCoordinates(4, 5, 6)) == 3);
test_expression(sparse_array->GetValue(vtkArrayCoordinates(0, 0, 1)) == 0);
}
// Change vtkTableToSparseArray to use explicit output extents ...
source->SetOutputExtents(vtkArrayExtents(11, 12, 13));
source->Update();
{
vtkSparseArray<double>* const sparse_array = vtkSparseArray<double>::SafeDownCast(
source->GetOutput()->GetArray(static_cast<vtkIdType>(0)));
test_expression(sparse_array);
sparse_array->Print(std::cerr);
test_expression(sparse_array->GetExtent(0) == vtkArrayRange(0, 11));
test_expression(sparse_array->GetExtent(1) == vtkArrayRange(0, 12));
test_expression(sparse_array->GetExtent(2) == vtkArrayRange(0, 13));
test_expression(sparse_array->GetValue(vtkArrayCoordinates(0, 0, 0)) == 1);
test_expression(sparse_array->GetValue(vtkArrayCoordinates(1, 2, 3)) == 2);
test_expression(sparse_array->GetValue(vtkArrayCoordinates(4, 5, 6)) == 3);
test_expression(sparse_array->GetValue(vtkArrayCoordinates(0, 0, 1)) == 0);
}
return 0;
}
catch(std::exception& e)
{
std::cerr << e.what() << endl;
return 1;
}
}
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