[vtkusers] Using Glyphs

[Randy Heiland]

On Apr 12,  9:13pm, VovaJ at netscape.net wrote:
> Subject: [vtkusers] Using Glyphs
> Hello! I have build an implicit surface using vtkSampleFunction.
>    And I extracted an triangulated surface from it using vtkContourFilter.
>    vtkContourFilter *contour =vtkContourFilter::New();
>    contour->SetInput(spline->GetOutput());
>    contour->SetValue(0,0.0);
>    Afterwards I try to glue a small Cones to it, using vtkGlyph3D,
>
>           vtkConeSource *cone = vtkConeSource::New();
>           vtkGlyph3D *glyph = vtkGlyph3D::New();
>           glyph->SetInput(deci->GetOutput());
>           glyph->SetSource(cone->GetOutput());
>           glyph->SetVectorModeToUseNormal();
>           glyph->SetScaleModeToScaleByVector();
>           glyph->SetScaleFactor(0.20);
>
>    but they are oriented to the inside of the surface, not to outside.
>    How can i fix it?


Sounds like you need to insert a vtkReverseSense into your pipeline (operating
on the contour normals) and set ReverseNormalsOn().

--Randy