_vtkglyph->SetScaleModeToScaleByVector();
_vtkglyph->SetColorModeToColorByVector();
_vtkglyph->SetScaleFactor( GetScaleFactor() );
_vtkglyph->SetScaleModeToScaleByVector();
_vtkglyph->SetColorModeToColorByVector();
_vtkglyph->SetScaleFactor( GetScaleFactor() );