Difference between revisions of "VTK/Polyhedron Support"

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Line 18: Line 18:
** vtkGenericCell expanded to include vtkPolyhedron
** vtkGenericCell expanded to include vtkPolyhedron
** vtkCellTypes.h has new #define VTK_POLYHEDRON
** vtkCellTypes.h has new #define VTK_POLYHEDRON
'''Implementation Issues'''
* VTK File formats and IO
** XML formats
** Legacy formats
* Geometry Filter
* Critical filters
** Contouring
** Clipping
** Search (vtkDataSet::FindCell and FindPoint)

Revision as of 07:10, 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


Summary of Implementation Plan:

  • Identify interpolation functions
    • Mean Value Coordinates (paper by Tao Ju et al.)
    • For triangle meshes as well as arbitrary polyhedron
  • Implement interpolation functions & filters
    • vtkMeanValueCoordinatesInterpolator
    • vtkProbePolyhedron
    • vtkDeformPointSet
  • 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
    • vtkGenericCell expanded to include vtkPolyhedron
    • vtkCellTypes.h has new #define VTK_POLYHEDRON


Implementation Issues

  • VTK File formats and IO
    • XML formats
    • Legacy formats
  • Geometry Filter
  • Critical filters
    • Contouring
    • Clipping
    • Search (vtkDataSet::FindCell and FindPoint)