VTK/Polyhedron Support: Difference between revisions
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** Triangle meshes ([http://www.cs.wustl.edu/~taoju/research/meanvalue.pdf paper] by Tao Ju et al.) | ** Triangle meshes ([http://www.cs.wustl.edu/~taoju/research/meanvalue.pdf paper] by Tao Ju et al.) | ||
** Arbitrary polyhedron ([https://domino.mpi-inf.mpg.de/intranet/ag4/ag4publ.nsf/AuthorEditorIndividualView/9144c5ff262d3f9cc12571be00348ddf/$FILE/paper.pdf?OpenElement paper] by Torsten Langer et al.) | ** Arbitrary polyhedron ([https://domino.mpi-inf.mpg.de/intranet/ag4/ag4publ.nsf/AuthorEditorIndividualView/9144c5ff262d3f9cc12571be00348ddf/$FILE/paper.pdf?OpenElement paper] by Torsten Langer et al.) | ||
* Polyhedron cell support | * Polyhedron cell support | ||
** vtkPolyhedron - more complex cell in that it requires explicit face representation | ** vtkPolyhedron - more complex cell in that it requires explicit face representation | ||
** vtkUnstructuredGrid - modified to support polyhedron cell, new InsertNextCell() and related methods | ** vtkUnstructuredGrid - modified to support polyhedron cell, new InsertNextCell() and related methods (e.g., GetFace()). | ||
** vtkGenericCell expanded to include vtkPolyhedron | ** vtkGenericCell expanded to include vtkPolyhedron | ||
** vtkCellTypes.h has new #define VTK_POLYHEDRON | ** vtkCellTypes.h has new #define VTK_POLYHEDRON | ||
* Implement cool related interpolation functions & filters | |||
** vtkMeanValueCoordinatesInterpolator | |||
** vtkProbePolyhedron - probe the region (interior, surface, exterior) around a polyhedral mesh for data values. | |||
** vtkDeformPointSet - use MVC to deform any vtkPointSet using control mesh | |||
** vtkExtractPolyhedralMesh - for debugging, convert 3D cells to vtkPolyhedron | |||
** Would like to implement some VTK widgets to manipulate meshes | |||
*** vtkPancakeWidget (local surface deformation) | |||
*** vtkControlMeshWidget (for global deformation of geometry) | |||
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** Contouring | ** Contouring | ||
** Clipping | ** Clipping | ||
** Search (vtkDataSet::FindCell and FindPoint) | ** Search (vtkDataSet::FindCell() and FindPoint()) | ||
* Impact on previous code | * Impact on previous code | ||
** Previous vtkClipDataSet can now produce polyhedron as output | ** Previous vtkClipDataSet can now produce polyhedron as output, is this desirable? | ||
'''Auxiliary Tasks''' | '''Auxiliary Tasks''' | ||
* vtkPolygon basis functions: replace 1/r^2 with the MVC 2D equivalent | * vtkPolygon basis functions: replace silly 1/r^2 with the MVC 2D equivalent | ||
Revision as of 16:33, 18 February 2010
Goals:
- Add support for arbitrary polyhedral cell (manifold, watertight, may be concave)
- Develop smooth interpolation functions for polyhedron
- Create filters, examples and testing infrastructure supporting this technology
- Application goal: support CFD solvers (finite volume methods for computational fluid dynamics and similar)
Summary of Implementation Plan:
- Identify interpolation functions
- Polyhedron cell support
- vtkPolyhedron - more complex cell in that it requires explicit face representation
- vtkUnstructuredGrid - modified to support polyhedron cell, new InsertNextCell() and related methods (e.g., GetFace()).
- vtkGenericCell expanded to include vtkPolyhedron
- vtkCellTypes.h has new #define VTK_POLYHEDRON
- Implement cool related interpolation functions & filters
- vtkMeanValueCoordinatesInterpolator
- vtkProbePolyhedron - probe the region (interior, surface, exterior) around a polyhedral mesh for data values.
- vtkDeformPointSet - use MVC to deform any vtkPointSet using control mesh
- vtkExtractPolyhedralMesh - for debugging, convert 3D cells to vtkPolyhedron
- Would like to implement some VTK widgets to manipulate meshes
- vtkPancakeWidget (local surface deformation)
- vtkControlMeshWidget (for global deformation of geometry)
Implementation Issues:
- VTK File formats and IO
- XML formats
- Legacy formats
- Critical filters /functionality
- Geometry Filter
- Contouring
- Clipping
- Search (vtkDataSet::FindCell() and FindPoint())
- Impact on previous code
- Previous vtkClipDataSet can now produce polyhedron as output, is this desirable?
Auxiliary Tasks
- vtkPolygon basis functions: replace silly 1/r^2 with the MVC 2D equivalent
Contacts:
- Will Schroeder (will.schroeder at kitware.com)
- Hua Yang (hua.yang at kitware.com)
