[vtk-developers] howto report a bug?

[Sebastien Jourdain]

Hi Henning,

If it doesn't have to be based on Implicit functions, you can look at
vtkBooleanOperationPolyDataFilter instead...

Seb

On Sat, Oct 6, 2012 at 7:29 AM, Henning Meyer <tutmann at gmail.com> wrote:
> I'm actually thinking of skipping sampling altogether and move to
> direct polygonization using approaches like:
> http://www.sciencedirect.com/science/article/pii/S0097849305001317
>
> Something like this would also make a nice addition to VTK, wouldn't it?
> Unfortunately the referred algorithms need Hessians of the implicit
> function and deriving the Hessian symbolically is currently bending my
> brain...
>
> 2012/10/6 Will Schroeder <will.schroeder at kitware.com>:
>> This is a very cool and ambitious project. Chances are you are going to
>> rapidly run into resolution issues (if for example you sample the functions
>> on volumes) due to the uniform partitioning of space of volumetric sampling.
>> You may have to use an adaptive sampling process, say driven by something
>> like an octree. And hopefully you've had a chance to review some of the
>> literature out there like
>> http://www-evasion.imag.fr/Membres/Franck.Hetroy/Teaching/ComputerGraphics/Articles/bloomenthal_wyvill-i3d1990.pdf
>> (a good starting point).
>>
>> W
>>
>>
>> On Sat, Oct 6, 2012 at 12:59 AM, Henning Meyer <tutmann at gmail.com> wrote:
>>>
>>> > As a work around, just scale the plane uwing SetNormal so that the range
>>> > of the data is the same as the sphere (or other data). No need to implement
>>> > your own.
>>>
>>> That would work for the synthetic examples I made up. But I need a general
>>> solution as I'm developing a general purpose CAD based on Implicit
>>> Functions.
>>
>>
>>
>>
>> --
>> William J. Schroeder, PhD
>> Kitware, Inc.
>> 28 Corporate Drive
>> Clifton Park, NY 12065
>> will.schroeder at kitware.com
>> http://www.kitware.com
>> (518) 881-4902
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