[vtkusers] vtkWarpVector with vtkStructuredPointsGeometryFilter

[Fabrice Vincent]

Hi Jerome,

Try using vtkWarpScalar instead of vtkWarpVector.
It will warp the plane along its normal direction proportionnally to the scalar values
of the implicit function.

Fabrice


Jerome Coloos wrote:

> Hi,
>
> I'm trying to view a cross section from a SampleFunction using WarpVector
> (to see the relief of the section).
>
> I made the sequence :
>
> vtkQuadric quadric
>   quadric SetCoefficients .5 1 .2 0 .1 0 0 .2 0 0
>
> vtkSampleFunction sample
>   sample SetSampleDimensions 20 20 20
>   sample SetModelBounds 0 1 0 1 0 1
>   sample SetImplicitFunction quadric
>   sample ComputeNormalsOff
>
> vtkStructuredPointsGeometryFilter plane
>     plane SetInput [sample GetOutput]
>     plane SetExtent 0 100 0 100 10 10  # Z middle plane
>     plane Update
>
> vtkWarpVector warper
>     warper SetInput [plane GetOutput]
>
> vtkDataSetMapper planeMapper
>     planeMapper SetInput [warper GetOutput]
>     eval planeMapper SetScalarRange  [[sample GetOutput] GetScalarRange]
>
> vtkActor planeActor
>     planeActor SetMapper planeMapper
>
> And I got the error message "vtkWarpVector : no Input Data"
>
> What's wrong with this script ?
>
> __________________________________________
>    ___    Jérôme COLOOS
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--
Fabrice VINCENT

CREATIS (CNRS UMR 5515), INSA 502, 69621 Villeurbanne, FRANCE
email: fabrice.vincent at creatis.insa-lyon.fr
tel: 04 72 43 63 06