[Paraview-developers] Changes coming to ParaView's color legend

[Cory Quammen]

For a small preview of how the new implementation compares to the
current one, please see the attached screenshots of the current and
new color legend. The files ending in "Current.png" are from ParaView
5.1, while files ending in "New.png" are from the new color legend not
yet in ParaView.

- Cory

On Thu, Aug 4, 2016 at 10:52 AM, Cory Quammen <cory.quammen at kitware.com> wrote:
> Hi folks,
>
> There are a number of issues with ParaView's current color legend.
> Here are a few:
>
> http://www.paraview.org/Bug/view.php?id=15875
> http://www.paraview.org/Bug/view.php?id=16000
> http://www.paraview.org/Bug/view.php?id=15379
> http://www.paraview.org/Bug/view.php?id=15074
> http://www.paraview.org/Bug/view.php?id=15864
> http://www.paraview.org/Bug/view.php?id=15862
> http://www.paraview.org/Bug/view.php?id=15851
> http://www.paraview.org/Bug/view.php?id=15637
> http://www.paraview.org/Bug/view.php?id=15319
> http://www.paraview.org/Bug/view.php?id=14980
> http://www.paraview.org/Bug/view.php?id=15049
> http://www.paraview.org/Bug/view.php?id=14146
>
> You get the idea...
>
> To address most of these issues and to make future fixes hopefully
> more straightforward, I have been working on a new implementation of
> ParaView's color legend. Key improvements in the implementation
> include:
>
> - numerous bug fixes
> - ability to specify precisely the values to label
> - improved automatic "human-readable" values for the tick labels
> - font size controls that offer precise control over font properties.
> Size can be arbtitrary, for exampld
> - precise control over the color bar thickness
> - uses VTK's charts API, so making future improvements to the scalar
> bar is easier than in the current implementation
>
> While the color legend will look similar to the current color legend,
> you will likely see some differences once this change lands in master.
> Any baseline image used by testing infrastructure for ParaView or
> ParaView-based applications with a color legend will probably need to
> be updated.
>
> Note that these changes are in ParaView only and do not affect the
> scalar bars in VTK.
>
> I plan to put together a blog post on the Kitware web site showing off
> the new color legend in the near future. In the mean time, please let
> me know if you have any questions or concerns.
>
> Thanks,
> Cory
>
>
> --
> Cory Quammen
> R&D Engineer
> Kitware, Inc.



-- 
Cory Quammen
R&D Engineer
Kitware, Inc.
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