[vtkusers] VTK too slow
Robert Mitchell
robmitch at eng.uts.edu.au
Wed Jul 11 02:20:41 EDT 2001
sarah,
I'm using sphere glyphs and colouring them using the scalars associated
with the points that define their position. Using;
vtkPolyData with vtkPoints & vtkScalars
vtkShpereSource->vtkGlyph3D->vtkPolyDataMapper->vtkActor
m_PolyData->SetPoints(Points);
m_PolyData->GetPointData()->SetScalars(Scalars);
Glyph->SetInput(m_PolyData);
Glyph->SetSource(Sphere->GetOutput());
Glyph->ScalingOff();
SphereMapper->SetInput(Glyph->GetOutput());
SphereMapper->SetLookupTable(LUTable);
m_SphereActor->SetMapper(SphereMapper);
Ive also made another vtkLookupTable and associated it with the Mapper
so that the scalar value in the lookup table gives the right colour.
Rob
--
Robert Mitchell
Faculty of Engineering
University of Technology, Sydney
+61 2 9514 2317
====================
I am trying to represent a 3D grid of cellular automata as spherical
glyphs,
but the visualization runs very slowly (I am writing the scripts in
Tcl). As
I have it written, each different colored set of spheres requires its
own
unstructured grid reader, glyphpoints, and other necessary objects. Is
there
a more efficient way to represent the data, or read in the data as
different
colors, so that my program will run faster? Thanks in advance
====================
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