[vtkusers] problem with surface

[Germain PRUNIER]

Hi all,

I would like to display a surface from a cloud of points.
I tried vtkDelaunay3D and vtkSurfaceReconstructionFilter but for both methods I get unpleasant results.

I attached some pictures that presents the cloud of points, and the result with the 2 methods...

I think that some of you could help me. It seems not to be really difficult but I don't know how to do that!

Please, where are my problems ??

Thank you!
Germain



 <<cloud_points.jpg>>  <<cloud_points2.jpg>>  <<Delaunay3D.jpg>>  <<SurfaceReconstructionFilter.jpg>> 


//with vtkDelaunay3D, I wrote:


vtkDelaunay3D *delpts = vtkDelaunay3D::New();
    delpts->SetInput(data);                                   //data: my points
    delpts->SetTolerance(0.01);
    delpts->SetAlpha(0.0);

vtkDataSetMapper *cloudMapper2 = vtkDataSetMapper::New();
    cloudMapper->SetInput(delpts->GetOutput());

.....


**********************************************************
//with vtkSurfaceReconstructionFilter:

vtkSurfaceReconstructionFilter *surf = vtkSurfaceReconstructionFilter::New();
	surf->SetInput(data);

vtkContourFilter *cf = vtkContourFilter::New();
    cf->SetInput((vtkDataSet*)surf->GetOutput());
    cf->SetValue(0,0.0);

vtkReverseSense *reverse = vtkReverseSense::New();
   reverse->SetInput(cf->GetOutput());
   reverse->ReverseCellsOn();
   reverse->ReverseNormalsOn();
   reverse->Update();
	
vtkPolyDataMapper *cloudMapper = vtkPolyDataMapper::New();
   cloudMapper->SetInput(reverse->GetOutput());

...


-------------- next part --------------
A non-text attachment was scrubbed...
Name: cloud_points.jpg
Type: image/jpeg
Size: 13070 bytes
Desc: cloud_points.jpg
URL: <http://www.vtk.org/pipermail/vtkusers/attachments/20040729/152849bb/attachment.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: cloud_points2.jpg
Type: image/jpeg
Size: 10386 bytes
Desc: cloud_points2.jpg
URL: <http://www.vtk.org/pipermail/vtkusers/attachments/20040729/152849bb/attachment-0001.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Delaunay3D.jpg
Type: image/jpeg
Size: 22713 bytes
Desc: Delaunay3D.jpg
URL: <http://www.vtk.org/pipermail/vtkusers/attachments/20040729/152849bb/attachment-0002.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: SurfaceReconstructionFilter.jpg
Type: image/jpeg
Size: 19865 bytes
Desc: SurfaceReconstructionFilter.jpg
URL: <http://www.vtk.org/pipermail/vtkusers/attachments/20040729/152849bb/attachment-0003.jpg>