[Paraview] Questions on vector images output

[David Lonie]

Hi Mikhail,

1) The triangulation artifacts you're seeing are likely due to antialiasing
in the viewer. Turning AA off (or using a different viewer) should make the
gaps between the triangles disappear and the surface should appear smooth
again.

2) The axis labels are 3D objects with rotations away from the plane of the
image, while the scalar bar labels are in the plane of the image. This
means that the scalar bar labels can be inserted as actual text (i.e. tell
the viewer to draw the string "interior_bf_0"), but the axis labels have to
be drawn as bezier curves (i.e. tells the viewer to draw the shape of the
text) since the output image formats can't embed arbitrarily oriented text.
To fix the issue with the gaps, it looks like viewer antialiasing is the
likely culprit again.

Hope this helps,
Dave

On Sat, Oct 18, 2014 at 4:57 PM, Mikhail Artemyev <
artemiev.mikhail at gmail.com> wrote:

> Dear all,
>
> I have two questions related to the vector images output from ParaView for
> 3D. I use ParaView 4.1.0 32-bit on Ubuntu.
>
> 1. I've read here (http://www.kitware.com/blog/home/post/508) in the
> discussion after the post that if the "colors are generated from
> point/cell attributes", "the exporter should be able to handle it once
> 'Rasterize 3D geometry' turned off". Otherwise "you may end up with your
> exported object appearing grey/colorless". That's exactly what happens in
> my case. However my 3D picture is based on a rectangular grid with values
> of the computed field defined at the vertices of the grid. I understand
> that for visualization ParaView convert the rectangles to triangles first
> (and it's clearly seen from the grey/colorless image I have), therefore I'm
> wondering if it'll help if I replace rectangular mesh to triangular from my
> side.
>
> 2. The second question is why the labels of the axis have some
> triangulation inside them (here is a picture
> http://drive.google.com/file/d/0B-0jjlhN_6HyWkR1bWoxc3dVazA/view?usp=sharing).
> Is it GL2PS feature? How can I make them look like labels on colour bar?
>
> Thank you,
> Mikhail
>
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