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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#include "vtkDataArray.h"
#include "vtkFloatArray.h"
#include "vtkIdList.h"
#include "vtkImageData.h"
#include "vtkSimpleScalarTree.h"
#include "vtkSmartPointer.h"
#include "vtkSphereSource.h"
#include "vtkTestErrorObserver.h"
#include <sstream>
static vtkSmartPointer<vtkImageData> MakeImage(int, int, int);
int UnitTestSimpleScalarTree(int, char*[])
{
int status = 0;
vtkSmartPointer<vtkTest::ErrorObserver> errorObserver =
vtkSmartPointer<vtkTest::ErrorObserver>::New();
std::cout << "Testing empty Print...";
vtkSmartPointer<vtkSimpleScalarTree> stree = vtkSmartPointer<vtkSimpleScalarTree>::New();
std::ostringstream streePrint;
stree->Print(streePrint);
std::cout << "Passed" << std::endl;
std::cout << "Testing no data error...";
stree->AddObserver(vtkCommand::ErrorEvent, errorObserver);
stree->BuildTree();
int status1 = errorObserver->CheckErrorMessage("No data to build tree with");
if (status1)
{
status++;
std::cout << "Failed" << std::endl;
}
else
{
std::cout << "Passed" << std::endl;
}
std::cout << "Testing no scalar data error...";
vtkSmartPointer<vtkSphereSource> aSphere = vtkSmartPointer<vtkSphereSource>::New();
aSphere->Update();
stree->SetDataSet(aSphere->GetOutput());
stree->BuildTree();
int status2 = errorObserver->CheckErrorMessage("No scalar data to build trees with");
if (status2)
{
status++;
std::cout << "Failed" << std::endl;
}
else
{
std::cout << "Passed" << std::endl;
}
std::cout << "Testing GetNextCell...";
int status3 = 0;
int dim = 5;
vtkSmartPointer<vtkImageData> anImage = MakeImage(dim, dim, dim);
stree->SetDataSet(anImage);
stree->SetMaxLevel(VTK_INT_MAX);
vtkIdType cell;
vtkIdList* ids;
vtkSmartPointer<vtkFloatArray> scalars = vtkSmartPointer<vtkFloatArray>::New();
// Verify that branching does not affect the number of cells found
int numExpected = (dim - 1) * (dim - 1);
for (int b = 2; b < dim * dim; ++b)
{
stree->SetBranchingFactor(b);
stree->Initialize();
stree->BuildTree();
for (double v = 0; v < dim - 1; v += 1.0)
{
int numGot = 0;
stree->InitTraversal(v + 0.5);
while (stree->GetNextCell(cell, ids, scalars))
{
++numGot;
}
if (numGot != numExpected)
{
std::cout << "For " << v << " Expected " << numExpected << " but got " << numGot
<< std::endl;
++status3;
}
}
}
if (status3)
{
std::cout << "Failed" << std::endl;
++status;
}
else
{
std::cout << "Passed" << std::endl;
}
std::cout << "Testing Print...";
stree->Print(streePrint);
std::cout << "Passed" << std::endl;
if (status)
{
return EXIT_FAILURE;
}
else
{
return EXIT_SUCCESS;
}
}
vtkSmartPointer<vtkImageData> MakeImage(int dimx, int dimy, int dimz)
{
vtkSmartPointer<vtkImageData> anImage = vtkSmartPointer<vtkImageData>::New();
anImage->SetDimensions(dimx, dimy, dimz);
anImage->AllocateScalars(VTK_FLOAT, 1);
float* pixel = static_cast<float*>(anImage->GetScalarPointer(0, 0, 0));
float value = 0.0;
for (int z = 0; z < dimz; z++)
{
for (int y = 0; y < dimy; y++)
{
for (int x = 0; x < dimx; x++)
{
*pixel++ = value;
}
}
value += 1.0;
}
return anImage;
}
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