vtk field for release#4859
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Add reading of VTK legacy FIELD data entries in both POINT_DATA and CELL_DATA sections. When FIELD data is present and the number of tuples matches the point/cell count, the data is read as a VariableLengthVector pixel type. Only the first field data array per section is used; additional arrays are silently skipped. Add a test with a gourd.vtk file that exercises the FIELD data path. Co-authored-by: Matt McCormick <matt@mmmccormick.com>
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Closing — superseded by #6188, which forward-ports this work to |
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Add reading of VTK legacy FIELD data entries in both POINT_DATA
and CELL_DATA sections. When FIELD data is present and the number
of tuples matches the point/cell count, the data is read as a
VariableLengthVector pixel type.
`ReadMeshInformation` detects the `FIELD FieldData N` keyword and
parses the first array's header (`<name> <numComponents> <numTuples>
<dataType>`) to set the IO metadata. The matching
`Read{Point,Cell}DataBufferAs{ASCII,BINARY}` helpers now also consume
that array-header line after the `FIELD` keyword so the actual data
block lines up; without that step `itkMeshFileReadWriteTestField`
fails because the reader treats the array header as data.
Only the first field-data array per section is used; additional
arrays are silently skipped. Add a test with a `gourd.vtk` file
that exercises the FIELD data path.
Forward-port of InsightSoftwareConsortium#4859 from `release-5.4` to `main`.
Co-Authored-By: Matt McCormick <matt@mmmccormick.com>
Co-Authored-By: Hans Johnson <hans-johnson@uiowa.edu>
hjmjohnson
added a commit
to hjmjohnson/ITK
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May 2, 2026
Add reading of VTK legacy FIELD data entries in both POINT_DATA
and CELL_DATA sections. When FIELD data is present and the number
of tuples matches the point/cell count, the data is read as a
VariableLengthVector pixel type.
`ReadMeshInformation` detects the `FIELD FieldData N` keyword and
parses the first array's header (`<name> <numComponents> <numTuples>
<dataType>`) to set the IO metadata. The matching
`Read{Point,Cell}DataBufferAs{ASCII,BINARY}` helpers now also consume
that array-header line after the `FIELD` keyword so the actual data
block lines up; without that step `itkMeshFileReadWriteTestField`
fails because the reader treats the array header as data.
Only the first field-data array per section is used; additional
arrays are silently skipped. Add a test with a `gourd.vtk` file
that exercises the FIELD data path.
Forward-port of InsightSoftwareConsortium#4859 from `release-5.4` to `main`.
Co-Authored-By: Matt McCormick <matt@mmmccormick.com>
Co-Authored-By: Hans Johnson <hans-johnson@uiowa.edu>
hjmjohnson
pushed a commit
to hjmjohnson/ITK
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May 8, 2026
Read VTK legacy FIELD data entries in POINT_DATA and CELL_DATA
sections as VariableLengthVector when the tuple count matches the
point/cell count. Read{Point,Cell}DataBufferAs{ASCII,BINARY} now
consume the array-header line after the FIELD keyword (without
this fix the header was parsed as data and the test failed).
Only the first field-data array per section is used. Adds gourd.vtk
fixture exercising the path. Forward-port of InsightSoftwareConsortium#4859.
Co-Authored-By: Matt McCormick <matt@mmmccormick.com>
thewtex
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May 8, 2026
BUG: Add VTKPolyDataMeshIO FIELD data support (forward-port of #4859)
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Support .vtk PolyData
FIELDentries.