[GRASS-dev] vtkGRASSBridge update

[Soeren Gebbert]

Hello Ben,

2009/9/26 Benjamin Ducke <benjamin.ducke at oxfordarch.co.uk>:
> Great stuff indeed, Soeren!

Thanks a lot. I hope this code will help to do something useful in the future.

>
>>
>> Curiosity: how much faster is this compared to v.delaunay or likewise?
>
> To me, it's not so much the speed that matters but functionality.
> VTK's 2D Delaunay has a very useful "alpha" threshold setting to constrain
> the triangle (by maximum triangle size).
> In addition, it's capable of fitting a plane of reference through the data
> points and does not assume that they lie perfectly in the X-Y plane.
> This gives much better results for point clouds that describe e.g. micro relief
> on a slope.
>
> You can try this already, even without the VTK bridge: just export some
> 3D points to VTK, load into ParaView (3.6) and choose Delaunay 2D from
> the "Filter" menu.
>
> Now, if only we had a simple way of getting VTK data back into GRASS...

This is work in progress .... there will be of course a
vtkGRASSVectorPolyDataWriter()
in ... some ... weeks. :)

Best regards
Soeren

>
> Ben
>
>
>>
>> Markus
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>
>
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> Benjamin Ducke
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>
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