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/*=========================================================================
Program: Visualization Toolkit
Module: UnitTestImplicitVolume.cxx
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 "vtkImageData.h"
#include "vtkImplicitVolume.h"
#include "vtkMathUtilities.h"
#include "vtkSmartPointer.h"
#include "vtkTestErrorObserver.h"
#include <cstdio>
#include <sstream>
static vtkSmartPointer<vtkImageData> MakeVolume(int, int, int);
int UnitTestImplicitVolume(int, char*[])
{
int status = 0;
const int dim = 5;
// Create a volume
vtkSmartPointer<vtkImageData> aVolume = MakeVolume(dim, dim, dim);
// Test empty print
std::cout << "Testing empty Print...";
vtkSmartPointer<vtkImplicitVolume> impVol = vtkSmartPointer<vtkImplicitVolume>::New();
std::ostringstream emptyPrint;
impVol->Print(emptyPrint);
std::cout << "Passed" << std::endl;
//. Test error messages
std::cout << "Testing errors...";
vtkSmartPointer<vtkTest::ErrorObserver> errorObserver =
vtkSmartPointer<vtkTest::ErrorObserver>::New();
impVol->AddObserver(vtkCommand::ErrorEvent, errorObserver);
impVol->EvaluateFunction(0.0, 0.0, 0.0);
int status1 = errorObserver->CheckErrorMessage(
"Can't evaluate function: either volume is missing or volume has no point data");
double zero[3], zg[3];
zero[0] = zero[1] = zero[2] = 0.0;
impVol->EvaluateGradient(zero, zg);
status1 += errorObserver->CheckErrorMessage(
"Can't evaluate gradient: either volume is missing or volume has no point data");
if (status1)
{
std::cout << "Failed" << std::endl;
++status;
}
else
{
std::cout << "Passed" << std::endl;
}
// Test EvaluateFunction
std::cout << "Testing EvaluateFunction...";
int status2 = 0;
impVol->SetVolume(aVolume);
impVol->SetOutValue(-1000.0);
for (int k = 0; k < dim; k++)
{
for (int j = 0; j < dim; j++)
{
for (int i = 0; i < dim; i++)
{
double x = i + .5;
double y = j + .5;
double z = k;
double val = impVol->EvaluateFunction(x + .5, y, z);
if (x > (dim - 1) || y > (dim - 1) || z > (dim - 1))
{
if (val != impVol->GetOutValue())
{
std::cout << "For " << x << ", " << y << ", " << z << " expected "
<< impVol->GetOutValue() << " but got " << val << std::endl;
++status2;
}
}
else if (val != z)
{
std::cout << "For " << x << ", " << y << ", " << z << " expected " << z << " but got "
<< val << std::endl;
++status2;
}
}
}
}
if (status2)
{
std::cout << "Failed" << std::endl;
++status;
}
else
{
std::cout << "Passed" << std::endl;
}
// Test EvaluateGradient
std::cout << "Testing EvaluateGradient...";
int status3 = 0;
double tol = std::numeric_limits<double>::epsilon();
double og[3];
og[0] = og[1] = og[2] = -1000.0;
impVol->SetOutGradient(og);
for (int k = 0; k < dim; k++)
{
for (int j = 0; j < dim; j++)
{
for (int i = 0; i < dim; i++)
{
double xyz[3];
xyz[0] = i + .5;
xyz[1] = j + .5;
xyz[2] = k;
double n[3];
impVol->EvaluateGradient(xyz, n);
if (xyz[0] > (dim - 1) || xyz[1] > (dim - 1) || xyz[2] > (dim - 1))
{
if (n[0] != impVol->GetOutGradient()[0] || n[1] != impVol->GetOutGradient()[1] ||
n[2] != impVol->GetOutGradient()[2])
{
std::cout << "For " << xyz[0] << ", " << xyz[1] << ", " << xyz[2] << " expected "
<< impVol->GetOutGradient()[0] << ", " << impVol->GetOutGradient()[1] << ", "
<< impVol->GetOutGradient()[2] << " but got " << n[0] << ", " << n[1] << ", "
<< n[2] << std::endl;
++status3;
}
}
else if (!vtkMathUtilities::FuzzyCompare(0.0, n[0], tol) ||
!vtkMathUtilities::FuzzyCompare(0.0, n[1], tol) ||
!vtkMathUtilities::FuzzyCompare(-1.0, n[2], tol))
{
std::cout << "For " << xyz[0] << ", " << xyz[1] << ", " << xyz[2] << " expected "
<< "0, 0, -1"
<< " but got " << n[0] << ", " << n[1] << ", " << n[2] << std::endl;
++status3;
}
}
}
}
if (status3)
{
std::cout << "Failed" << std::endl;
++status;
}
else
{
std::cout << "Passed" << std::endl;
}
// Test non-empty print
std::cout << "Testing non-empty Print...";
std::ostringstream nonemptyPrint;
impVol->Print(nonemptyPrint);
std::cout << "Passed" << std::endl;
if (status)
{
return EXIT_FAILURE;
}
else
{
return EXIT_SUCCESS;
}
}
vtkSmartPointer<vtkImageData> MakeVolume(int dimx, int dimy, int dimz)
{
vtkSmartPointer<vtkImageData> aVolume = vtkSmartPointer<vtkImageData>::New();
aVolume->SetDimensions(dimx, dimy, dimz);
aVolume->AllocateScalars(VTK_FLOAT, 1);
float* pixel = static_cast<float*>(aVolume->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 aVolume;
}
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