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https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-08 13:23:51 +00:00
Fix crash when loading poly data with no cells
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parent
3e398bbb3d
commit
52cecefba0
3
data/data/unstructured/empty_poly.vtk
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3
data/data/unstructured/empty_poly.vtk
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@ -0,0 +1,3 @@
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version https://git-lfs.github.com/spec/v1
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oid sha256:3d0ddc7c712a6d544db85660cd9d325884892b18d6f0ed451361aaeae2a96413
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size 204
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3
data/data/unstructured/empty_unstructured.vtk
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3
data/data/unstructured/empty_unstructured.vtk
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@ -0,0 +1,3 @@
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version https://git-lfs.github.com/spec/v1
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oid sha256:75b5601eb23b1724d5309e69a51839615bce625f6e7641b52dc3d06e10b0c5ee
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size 745
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@ -210,6 +210,15 @@ inline void FixupCellSet(vtkm::cont::ArrayHandle<vtkm::Id>& connectivity,
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inline bool IsSingleShape(const vtkm::cont::ArrayHandle<vtkm::UInt8>& shapes)
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{
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if (shapes.GetNumberOfValues() < 1)
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{
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// If the data has no cells, is it single shape? That would make sense, but having
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// a single shape cell set requires you to slect a shape, and there are no cells to
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// make that selection from. We could get around that, but it's easier just to treat
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// it as a general explicit grid.
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return false;
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}
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auto shapesPortal = shapes.ReadPortal();
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vtkm::UInt8 shape0 = shapesPortal.Get(0);
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for (vtkm::Id i = 1; i < shapes.GetNumberOfValues(); ++i)
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@ -62,6 +62,17 @@ void TestReadingPolyData(Format format)
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"Incorrect cellset type");
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}
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void TestReadingPolyDataEmpty()
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{
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vtkm::cont::DataSet data =
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readVTKDataSet(vtkm::cont::testing::Testing::DataPath("unstructured/empty_poly.vtk"));
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VTKM_TEST_ASSERT(data.GetNumberOfPoints() == 8);
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VTKM_TEST_ASSERT(data.GetNumberOfCells() == 0);
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VTKM_TEST_ASSERT(data.GetCellSet().GetNumberOfPoints() == 8);
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VTKM_TEST_ASSERT(data.GetNumberOfFields() == 1);
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}
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void TestReadingStructuredPoints(Format format)
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{
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std::string testFileName = (format == FORMAT_ASCII)
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@ -114,6 +125,17 @@ void TestReadingUnstructuredGrid(Format format)
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"Incorrect cellset type");
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}
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void TestReadingUnstructuredGridEmpty()
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{
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vtkm::cont::DataSet data =
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readVTKDataSet(vtkm::cont::testing::Testing::DataPath("unstructured/empty_unstructured.vtk"));
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VTKM_TEST_ASSERT(data.GetNumberOfPoints() == 26);
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VTKM_TEST_ASSERT(data.GetNumberOfCells() == 0);
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VTKM_TEST_ASSERT(data.GetCellSet().GetNumberOfPoints() == 26);
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VTKM_TEST_ASSERT(data.GetNumberOfFields() == 2);
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}
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void TestReadingUnstructuredGridVisIt(Format format)
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{
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VTKM_TEST_ASSERT(format == FORMAT_ASCII);
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@ -452,6 +474,8 @@ void TestReadingVTKDataSet()
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TestReadingPolyData(FORMAT_ASCII);
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std::cout << "Test reading VTK Polydata file in BINARY" << std::endl;
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TestReadingPolyData(FORMAT_BINARY);
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std::cout << "Test reading VTK Polydata with no cells" << std::endl;
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TestReadingPolyDataEmpty();
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std::cout << "Test reading VTK StructuredPoints file in ASCII" << std::endl;
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TestReadingStructuredPoints(FORMAT_ASCII);
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@ -461,6 +485,8 @@ void TestReadingVTKDataSet()
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TestReadingUnstructuredGrid(FORMAT_ASCII);
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std::cout << "Test reading VTK UnstructuredGrid file in BINARY" << std::endl;
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TestReadingUnstructuredGrid(FORMAT_BINARY);
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std::cout << "Test reading VTK UnstructuredGrid with no cells" << std::endl;
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TestReadingUnstructuredGridEmpty();
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std::cout << "Test reading VTK RectilinearGrid file in ASCII" << std::endl;
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TestReadingRectilinearGrid1(FORMAT_ASCII);
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