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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#include "vtkCellData.h"
#include "vtkFloatArray.h"
#include "vtkImageData.h"
#include "vtkLogger.h"
#include "vtkNew.h"
#include "vtkPointData.h"
#include "vtkPolyData.h"
#include "vtkUnstructuredGrid.h"
namespace
{
int CompareTimes(
vtkMTimeType before, vtkMTimeType after, bool expectUpdate, const std::string& modifiedObjectName)
{
if (expectUpdate && before == after)
{
vtkLog(ERROR,
"Modifying " << modifiedObjectName << " should modify MeshMTime. Before: " << before
<< "; after: " << after);
return EXIT_FAILURE;
}
if (!expectUpdate && before != after)
{
vtkLog(ERROR,
"Modifying " << modifiedObjectName << " should not modify MeshMTime. Expected: " << before
<< "; got: " << after);
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
int TestFieldDataModification(vtkDataSet* dataset, bool expectMeshMTimeUpdate)
{
int result = EXIT_SUCCESS;
// Create dummy point/cell data
vtkNew<vtkFloatArray> floatArray;
// Modify point data arrays
vtkMTimeType initialMeshMTime = dataset->GetMeshMTime();
dataset->GetPointData()->AddArray(floatArray);
vtkMTimeType newMeshMTime = dataset->GetMeshMTime();
result &= CompareTimes(initialMeshMTime, newMeshMTime, expectMeshMTimeUpdate, "point data");
// Modify cell data arrays
initialMeshMTime = dataset->GetMeshMTime();
dataset->GetCellData()->AddArray(floatArray);
newMeshMTime = dataset->GetMeshMTime();
result &= CompareTimes(initialMeshMTime, newMeshMTime, expectMeshMTimeUpdate, "cell data");
return result;
}
int TestPolyData()
{
vtkLogScopeF(INFO, "Test vtkPolyData");
int result = EXIT_SUCCESS;
// Create dummy dataset
float point[3] = { 0, 0, 0 };
vtkNew<vtkPoints> points;
points->SetNumberOfPoints(1);
points->SetPoint(0, point);
vtkNew<vtkPolyData> polydata;
polydata->SetPoints(points);
// Modifying points/lines/verts/polys themselves should.
// Modifying field data shouldn't modify MeshMTime;
result &= TestFieldDataModification(polydata, false);
// Modify lines
vtkMTimeType initialMeshMTime = polydata->GetMeshMTime();
polydata->SetLines(vtkNew<vtkCellArray>());
vtkMTimeType newMeshMTime = polydata->GetMeshMTime();
result &= CompareTimes(initialMeshMTime, newMeshMTime, true, "lines");
// Modify strips
initialMeshMTime = polydata->GetMeshMTime();
polydata->SetStrips(vtkNew<vtkCellArray>());
newMeshMTime = polydata->GetMeshMTime();
result &= CompareTimes(initialMeshMTime, newMeshMTime, true, "strips");
// Modify polys
initialMeshMTime = polydata->GetMeshMTime();
polydata->SetPolys(vtkNew<vtkCellArray>());
newMeshMTime = polydata->GetMeshMTime();
result &= CompareTimes(initialMeshMTime, newMeshMTime, true, "polys");
// Modify verts
initialMeshMTime = polydata->GetMeshMTime();
polydata->SetVerts(vtkNew<vtkCellArray>());
newMeshMTime = polydata->GetMeshMTime();
result &= CompareTimes(initialMeshMTime, newMeshMTime, true, "verts");
return result;
}
int TestUnstructuredGrid()
{
vtkLogScopeF(INFO, "Test vtkUnstructuredGrid");
int result = EXIT_SUCCESS;
float point[3] = { 0, 0, 0 };
vtkNew<vtkPoints> points;
points->SetNumberOfPoints(1);
points->SetPoint(0, point);
// Modifying field data shouldn't modify MeshMTime;
// Modifying connectivity should.
vtkNew<vtkUnstructuredGrid> grid;
grid->SetPoints(points);
result &= TestFieldDataModification(grid, false);
// Modify connectivity
vtkMTimeType initialMeshMTime = grid->GetMeshMTime();
grid->SetCells(VTK_TRIANGLE, vtkNew<vtkCellArray>());
vtkMTimeType newMeshMTime = grid->GetMeshMTime();
result &= CompareTimes(initialMeshMTime, newMeshMTime, true, "connectivity");
return result;
}
int TestDefaultImplementation(vtkDataSet* noMeshMTimeImplementationDataset)
{
vtkLogScopeF(INFO, "Test default implementation");
int result = EXIT_SUCCESS;
result &= TestFieldDataModification(noMeshMTimeImplementationDataset, true);
return result;
}
}
//------------------------------------------------------------------------------
int TestMeshMTime(int, char*[])
{
int result = EXIT_SUCCESS;
result &= TestPolyData();
result &= TestUnstructuredGrid();
// Note: Image data uses the default implementation; this might change in the future
vtkNew<vtkImageData> imageData;
result &= TestDefaultImplementation(imageData);
return result;
}
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