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/*=========================================================================
Program: Visualization Toolkit
Module: TestImageDataOrientation.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.
=========================================================================*/
// .NAME Test direction API for image data
// .SECTION Description
// This program tests the direction API of the image data.
#include "vtkCell.h"
#include "vtkDebugLeaks.h"
#include "vtkImageData.h"
#include "vtkMath.h"
#include "vtkMathUtilities.h"
#include "vtkMatrix4x4.h"
#include "vtkNew.h"
#include "vtkPoints.h"
inline int DoOrientationTest(
int extent[6], double origin[3], double spacing[3], double direction[9])
{
double tol = 10e-15;
// Create image
vtkNew<vtkImageData> image;
image->SetExtent(extent);
image->SetOrigin(origin);
image->SetSpacing(spacing);
image->SetDirectionMatrix(direction);
image->AllocateScalars(VTK_DOUBLE, 1);
// Check some values in index to physical matrix
vtkMatrix4x4* m4 = image->GetIndexToPhysicalMatrix();
if (m4->GetElement(0, 3) != origin[0] || m4->GetElement(1, 3) != origin[1] ||
m4->GetElement(2, 3) != origin[2] || m4->GetElement(3, 3) != 1)
{
vtkGenericWarningMacro(
"IndexToPhysical matrix of the image data is missing the translation information");
return EXIT_FAILURE;
}
// Go from min IJK to XYZ coordinates
int i, j, k;
i = extent[0];
j = extent[2];
k = extent[4];
double xyz[3];
image->TransformIndexToPhysicalPoint(i, j, k, xyz);
// Test FindCell and ensure it finds the first cell (since we used IJK min)
double pcoords[3];
int subId = 0;
vtkIdType cellId = image->FindCell(xyz, nullptr, 0, 0, subId, pcoords, nullptr);
if (cellId != 0)
{
vtkGenericWarningMacro("FindCell returns " << cellId << ", expected 0");
return EXIT_FAILURE;
}
if (!vtkMathUtilities::FuzzyCompare(pcoords[0], 0.0, tol) ||
!vtkMathUtilities::FuzzyCompare(pcoords[1], 0.0, tol) ||
!vtkMathUtilities::FuzzyCompare(pcoords[2], 0.0, tol))
{
vtkGenericWarningMacro(
"FindCell returns the proper cell (0), but pcoords isn't equal to {0,0,0}");
return EXIT_FAILURE;
}
// Test GetCell and ensure it returns the same value as XYZ above
vtkCell* cell = image->GetCell(cellId);
double pt[3];
cell->GetPoints()->GetPoint(0, pt);
if (!vtkMathUtilities::FuzzyCompare(pt[0], xyz[0], tol) ||
!vtkMathUtilities::FuzzyCompare(pt[1], xyz[1], tol) ||
!vtkMathUtilities::FuzzyCompare(pt[2], xyz[2], tol))
{
vtkGenericWarningMacro(
"GetCell result for cell " << cellId << " does not match expected values.");
return EXIT_FAILURE;
}
// Go from physical coordinate to index coordinate and ensure
// it matches with ijk
double index[3];
image->TransformPhysicalPointToContinuousIndex(pt, index);
if (!vtkMathUtilities::FuzzyCompare(index[0], (double)i, tol) ||
!vtkMathUtilities::FuzzyCompare(index[1], (double)j, tol) ||
!vtkMathUtilities::FuzzyCompare(index[2], (double)k, tol))
{
vtkGenericWarningMacro("Applying the PhysicalToIndex matrix does not return expected indices.");
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
int TestImageDataOrientation(int, char*[])
{
const double pi = vtkMath::Pi();
// test 0D, 1D, 2D, 3D data with various extents, spacings, origins, directions
static int dims[4][3] = {
{ 1, 1, 1 },
{ 3, 1, 1 },
{ 3, 3, 1 },
{ 3, 3, 3 },
};
static int starts[4][3] = {
{ 0, 0, 0 },
{ -1, 0, -1 },
{ 2, 3, 6 },
{ -10, 0, 5 },
};
static double spacings[4][3] = {
{ 1, 1, 1 },
{ 1.0 / 7, 1, 1 },
{ 1, -1, 1 },
{ -1, 1, -1 / 13.0 },
};
static double origins[4][3] = {
{ 0, 0, 0 },
{ 1.0 / 13, 0, 0 },
{ 0, -1, 0 },
{ -1, 0, -1 / 7.0 },
};
static double directions[7][9] = {
{
1, 0, 0, //
0, 1, 0, //
0, 0, 1 //
},
{
-1, 0, 0, //
0, -1, 0, //
0, 0, 1 //
},
{
1, 0, 0, //
0, 0, 1, //
0, 1, 0 //
},
{
0, -1, 0, //
1, 0, 0, //
0, 0, 1 //
},
{
1, 0, 0, //
0, cos(pi / 4), sin(pi / 4), //
0, -sin(pi / 4), cos(pi / 4) //
},
{
cos(-pi / 5), sin(-pi / 5), 0, //
-sin(-pi / 5), cos(-pi / 5), 0, //
0, 0, 1 //
},
{
cos(pi / 0.8), 0, sin(pi / 0.8), //
0, 1, 0, //
-sin(pi / 0.8), 0, cos(pi / 0.8), //
},
};
int extent[6];
double* spacing;
double* origin;
double* direction;
int failed = 0;
for (int i = 0; i < 4; i++)
{
for (int j = 0; j < 4; j++)
{
for (int k = 0; k < 4; k++)
{
spacing = spacings[k];
for (int l = 0; l < 4; l++)
{
origin = origins[l];
for (int ii = 0; ii < 3; ii++)
{
extent[2 * ii] = starts[i][ii];
extent[2 * ii + 1] = starts[i][ii] + dims[j][ii] - 1;
}
for (int jj = 0; jj < 4; jj++)
{
direction = directions[jj];
if (DoOrientationTest(extent, origin, spacing, direction) == EXIT_FAILURE)
{
failed = EXIT_FAILURE;
}
}
}
}
}
}
return failed;
}
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