[Libreoffice-bugs] [Bug 112687] New: Presentation annotations are saved with way too many points

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=112687

            Bug ID: 112687
           Summary: Presentation annotations are saved with way too many
                    points
           Product: LibreOffice
           Version: 5.1 all versions
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Impress
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: blackhole at lobianco.org

Description:
It is actually possible to save annotations made during presentation with the
mouse pointer if the option "Mouse painter as pen" (in Slide Show Settings) has
been enabled before starting the presentation.

The problem is however that the tool doesn't use the algorithm of the normal
hand-writing tool used in slide editing mode: while in editing mode the
hand-writing tool saves just a few dots and "builds" Bézier curves, in
presentation mode the algorithm just save LOTS of micro points.
You can see an example in the attached screenshot and odp file: the curves in
blue has been obtained with the handwriting tool in editing mode, those in red
with the "same" (that is not) tool in the presentation mode.
The result is that even with a few annotations, the slides become unresponsive
even on modern pc and generate other problems (e.g., annotation saved on the
wrong slide)

Steps to Reproduce:
1. In Slide Show Settings choose the option "Mouse painter as pen"
2. Now starts a presentation and make a few annotations
3. Close (or end) the presentation

Actual Results:  
Annotation are now saved (as desired) with the slide but making too many points
but are composed of way too many points that make instable LO (i.e., needs to
be killed). Annotations may also appear on wrong slides.

Expected Results:
The annotations made during presentation should have used the same algorithm of
hand writing during slide edit.


Reproducible: Always

User Profile Reset: No

Additional Info:
A similar bug already exists
(https://bugs.documentfoundation.org/show_bug.cgi?id=51928), but it focus on
presentation annotations not being saved.
While this one observes that annotations can actually be saved, but the process
of creating them is bugged.

There is no easy workaround, so I leave this bug report  as normal.



User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:55.0) Gecko/20100101
Firefox/55.0

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