smooth lines + multiwindow for galaxy notes

[Dan Kats]

Dear all

I've added a new smoothness dialogue and a gaussian smoothing function + enabled multiwindow. Is there a pull request feature or a possibility to push changes to the code?

A patch is attached.

[Dan Kats]

[Lars Wallin]

Sweet! Can't wait to try it :)

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[Thomas Boehnlein]

On Sunday, March 10, 2013 7:44:58 AM UTC-4, Dan Kats wrote:
>

You are my hero. Can multi window mode accept S Pen cutouts like S Note from other apps so it is super easy to paste stuff into Quill?

[Volker Braun]

Thank you for the patch!

Is there any reason to make the smoothing a per-pen setting? I think that it should be a global preference since you probably only want to set it once to account for the jittery-ness of your input device. Maybe I'm missing your use case?

Best,

Volker

[Dan Kats]

On 10 March 2013 19:59, Thomas Boehnlein <radic...@gmail.com> wrote:

You are my hero. Can multi window mode accept S Pen cutouts like S Note from other apps so it is super easy to paste stuff into Quill?

It doesn't depend on multi window mode. One has to set intent-filter and implement some stuff (see http://eggie5.com/8-hook-share-picture-via-menu-android ). Then the application will appear in the menu (I assume :-) )

 

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Daniel Kats

Centre for Computational Chemistry

School of Chemistry, University of Bristol

Bristol BS8 1TS, UK

[Dan Kats]

No, there isn't (any more) :-) I started with a linear smoothing that changed strokes considerably, therefore I wanted to give the user an ability to change the quality of strokes depending on what he wants to draw. But now with the gaussian smoothing it's not necessary any more. I completely agree that the smoothness dialogue should be moved into preferences and shouldn't change the pen-history.

Regards,

Daniel

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[Volker Braun]

Great, I'll move it into the preferences then!

Best wishes,

Volker

[Dan Kats]

Cheers mate!

Daniel

[Volker Braun]

I've added your Gaussian filter and Savitzky-Golay. The usual objection against Gaussian is that it suppresses extremes, so sharp corners are eroded. The SG filter preserves such features better. In any case, the choice is configurable in the preferences.

[Dan Kats]

Thank you! Looks nice.
But if you zoom in, there are still too many straight lines and corners instead of smooth lines for my taste. I think they has to be there in order to reduce the memory consumption. On the other hand xournal manages somehow to have smooth lines even at the biggest zoom level... May be one could specify  a max number of points that can be simplified to a line, and later by printing use some sort of spline?

Regards
Daniel

On 7 Apr 2013 19:05, "Volker Braun" <vbrau...@gmail.com> wrote:

I've added your Gaussian filter and Savitzky-Golay. The usual objection against Gaussian is that it suppresses extremes, so sharp corners are eroded. The SG filter preserves such features better. In any case, the choice is configurable in the preferences.

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[Volker Braun]

Yes there is a certain trade-off between number of sample points and space. I picked a cutoff thats at the border of what one can see when the page is printed on a A4 paper. 

In any case, the solution is to use Bezier splines instead of straight lines to draw a line approximating the sample points. Perhaps only at higher zoom levels of perfomance, will have to see about that. Should be easy enough though. I'm pretty sure that this is what xournal does. I'll give it a try ;-)

[Volker Braun]

I've added Bezier splines at

https://code.google.com/p/android-quill/source/detail?r=b56e60ba25225cd11f037df1d3d039ae7f3f6706

[Dan Kats]

It's really amazing! Works very well

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