[vtkusers] Fwd: webgl output of VTKPolyData.py

[Sebastien Jourdain]

Hi Jian,

You may create a field using the calculator and use a lookup table. This
should work if you managed to get the color rights based on real scalar
field.

Seb

On Mon, Jul 27, 2015 at 4:21 PM, Jian Cheng <jian.cheng.1983 at gmail.com>
wrote:

>  Hi Sebastien,
>
> Thanks very much for your reply.
> I think you gave a correct reason.
>
> Based on your suggestion on Paraview, I tried paraview 3.98.1 in my
> laptop, it visualized the vtk file correctly.
> However when I save the file into webgl, then opened the html file, the
> color of the result is not correct (i.e. not the rgba color), maybe because
> the same reason you just mentioned.
> For paraview 3.98.1, I noticed that no matter how I changed the second Drop-down
> menu (magnitude, 0,1,2,3), the visualization does not change.
>
>
> Then I downloaded the latest paraview 4.3.1, both the color of
> visualization in paraview and color of saved html file are not correct.
> I noticed that when I changed the second Drop-down menu (magnitude,
> 0,1,2,3), the visualization color now changes, because paraview uses one of
> the scalar values.
>
>
> Do you have any suggestion on how to solve the issue the paraview? Thanks.
>
> best,
> Jian Cheng
>
> On 07/27/2015 02:13 PM, Sebastien Jourdain wrote:
>
> Hi Jian,
>
>  the reason here is that the data you try to look at is not a scalar
> field but a RGBA type of information.
> The WebGL exported is looking for a field (I think) and get confused.
>
>  You may need to generate a field here and use a lookup table with it.
> You can also try to use ParaView to load and export the data in WebGL.
>
>  Seb
>
>
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