[Paraview] question about points size

[Dominik Szczerba]

Hmmm. I do find a call to glPointSize in ParaView source, but calling it in my 
custom code:

	glyph->SetGlyphTypeToVertex();
	glyph->SetScale(5);
	glyph->SetScale2(5);
	glPointSize(5.0);

still displays the vertex glyphs as 1-point pixels. So there must be more 
magic PV is doing... Also, when doing:

	gridActor->GetProperty()->SetRepresentationToPoints();

I also get single pixels, despite glPointSize(). And PV does react very nicely 
to the point size setting in the GUI.
Any hints will be very appreciated.
-- Dominik

PS. glSetFloatV is not declared in any of my /usr/include/GL files... I also 
do not find it in the PV source...


On Friday 19 September 2008 10:22:34 pm you wrote:
> It lets GL so it. Ie it sends exactly the same polygons as for
> wireframe or surface mode, but calls glBegin(GL_POINTS) and
> glSetFloatV(GL_POINT_SIZE) before doing so in this mode.
>
> cheers,
> Dave DeMarle
>
> On Fri, Sep 19, 2008 at 5:01 AM, Dominik Szczerba <dominik at itis.ethz.ch> 
wrote:
> > I wonder how PointSize is implemented in representation->points in
> > ParaView.
> >
> > Is it achieved with vtkGlyphSource2D/Vertex and setting the glyph size?
> >
> > It works neatly in PV but I must achieve a similar effect using VTK and
> > despite setting glyph size I always get a tiny pixel.
> >
> > When I use vtkGlyphSource2D/Square it works, but then the square glyphs
> > are not always aligned with the viewing plane.
> >
> > Any hints are very appreciated.
> >
> > --
> > Dominik Szczerba, Ph.D.
> > Computational Physics Group
> > Foundation for Research on Information Technologies in Society
> > http://www.itis.ethz.ch
> > _______________________________________________
> > ParaView mailing list
> > ParaView at paraview.org
> > http://www.paraview.org/mailman/listinfo/paraview



-- 
Dominik Szczerba, Ph.D.
Computational Physics Group
Foundation for Research on Information Technologies in Society
http://www.itis.ethz.ch