[vtkusers] Mesh from 3-D distance field in octree

[Francois Bertel]

Hi,

FYI, there are some octrees in VTK:

vtkHyperOctree is a dataset ("hyper" because it works also in 1D and 2D).

http://www.vtk.org/doc/nightly/html/classvtkHyperOctree.html

There are a couple of sources/filters/algorithms written for this dataset:
vtkHyperOctreeSurfaceFilter
vtkClipHyperOctree
vtkHyperOctreeContourFilter
vtkHyperOctreeLimiter
vtkHyperOctreeDepth
vtkHyperOctreeSampleFunction
vtkHyperOctreeCutter
vtkHyperOctreeDualGridContourFilter
vtkHyperOctreeFractalSource
vtkHyperOctreeToUniformGridFilter

vtkXMLHyperOctreeReader/Writter

There is also vtkCellLocator but this is spatial search object, not a dataset.

Regards.

Simon Perreault wrote:
> Hi,
> 
> I made an octree class and I use it to contain a distance field. I want to use 
> VTK to compute a mesh of an isosurface of this distance field. Here's how I 
> intend to do this:
> 
> 1) Make my octree a subclass of vtkDataSet.
> 2) Connect the octree to the vtkMarchingCubes class with GetOutput / SetInput.
> 
> Is this right? Which particular subclass of vtkDataSet should I use as base 
> for my octree? Any hints?
> 
> Thanks
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François Bertel, PhD  | Kitware Inc. Suite 204
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