[Cin] Trying to understand colour, try N!

[Phyllis Smith]

Andrea's results are really interesting.
I wonder why the Clamp is there if it is not needed?
Will removing it affect existing older projects?


On Wed, Nov 8, 2023 at 7:13 AM Andrea paz via Cin <
cin at lists.cinelerra-gg.org> wrote:

> > and feel free to experiment with "//" commenting it out :)
>
> I tried to compile by commenting out the string CLAMP(output, 0, 1.0)
> in histogram.C. The compilation occurred without errors. CinGG starts
> without errors and the Histogram plugin runs without errors. In the
> graph you can see that the data in the area beyond 1.0 is not visible,
> however, this time the plugin seems to work in float because I was
> able to pull out the hdr data that was present in the original image.
> See attached image.
> Note that the normal plugin has a horizontal line between 100 and 110%
> (as well as between 0 and -10%). It is the clip line. That line has
> remained in black but is no longer there in super-white.
> No errors or other messages are reported in the terminal from which I ran
> CinGG.
> I will continue testing, but if all goes well I propose to remove the
> line from the code because having an important plugin like histogram
> without the clip is a good thing.
> --
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> Cin at lists.cinelerra-gg.org
> https://lists.cinelerra-gg.org/mailman/listinfo/cin
>
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