[vtkusers] How to "charge" a Lookuptable color

[Armeni Davide]

Hi everyone,
I want to post a simplest question to u:

When i write a lookup table directly in an UnstructuredGrid file,
i've to set some property in the code that read the file ?

Or I must only indicate the input file ... ?
to read the "lut" table i have to explicit in the code ... ?

CODE:
  vtkUnstructuredGridReader *part = vtkUnstructuredGridReader::New();
 
part->SetFileName("/vtkexamples/UGridEx1.vtk");
part->SetScalarsName("scalars");
 
part->Update();

vtkDataSetMapper *partMapper = vtkDataSetMapper::New();
 
partMapper->SetInput((vtkDataSet*)part->GetOutput());
 
vtkLODActor *partActor = vtkLODActor::New();
  
 partActor->SetMapper(partMapper);
 partActor->RotateX(30.0);
 partActor->RotateY(-45.0);

  vtkRenderer *ren1 = vtkRenderer::New();
  vtkRenderWindow *renWin = vtkRenderWindow::New();
  renWin->AddRenderer(ren1);
  vtkRenderWindowInteractor *iren = vtkRenderWindowInteractor::New();
  iren->SetRenderWindow(renWin);
  
  ren1->AddActor(partActor);
  ren1->SetBackground(1.0, 1.0, 1.4);
   
  renWin->SetSize(800, 800);
  
  renWin->Render();
  
  iren->Start();

  part->Delete();
  partMapper->Delete();
  partActor->Delete();
  ren1->Delete();
  renWin->Delete();
  iren->Delete();

  return 0;
}



example:
# vtk DataFile Version 4.0
Unstructured Grid Example
ASCII
DATASET UNSTRUCTURED_GRID
POINTS n float
0.0 0.0 0.0
....

CELLS n m
3 1 5 0
...

CELL_TYPES n
5
...

POINT_DATA n
SCALARS scalars int 1
LOOKUP_TABLE lut
6
...
coeff(n)

LOOKUP_TABLE lut 8
1.0 0.0 0.4 1.0
0.0 1.0 1.0 1.0
0.0 0.0 1.0 1.0
0.4 0.4 0.6 1.0
0.0 0.0 1.0 1.0
1.0 0.0 1.0 1.0
0.0 1.0 1.0 1.0
1.0 1.0 1.0 1.0


Gruppo Telecom Italia - Direzione e coordinamento di Telecom Italia S.p.A.

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