PS: duplicate of reddit for people not using reddit 
(https://www.reddit.com/r/elm/comments/7gksya/pointer_mousetouchpointer_events_community/)

Hi folks,

I've been browsing the elm packages repository in search of packages 
dealing with pointer events in general, mouse / touch / pointer. My 
conclusion is that we are all doing more or less the same things over and 
over. The timeline is the following:

First publication:

* 2016-08: knledg/touch-events
* 2016-10: mbr/elm-mouse-events
* 2016-11: mpizenberg/elm-touch-events
* 2017-05: mpizenberg/elm-mouse-events
* 2017-06: Elm-Canvas/element-relative-mouse-events
* 2017-07: zwilias/elm-touch-events
* 2017-10: mpizenberg/elm-pointer-events

Last update:

* 2017-05: 1.0.4 of mbr/elm-mouse/events
* 2017-05: 2.1.2 of knledg/touch-events
* 2017-06: 3.0.1 of mpizenberg/elm-touch-events
* 2017-06: 1.0.0 of Elm-Canvas/element-relative-mouse-events
* 2017-10: 1.0.4 of mpizenberg/elm-pointer-events
* 2017-11: 1.1.1 of mpizenberg/elm-mouse-events
* 2017-11: 1.1.0 of zwilias/elm-touch-events

As you can see, I'm partially (mpizenberg) responsible for starting 
additional mouse and touch packages. Of course, I had reasons to do so at 
the time, but now, I feel that it would be a good time to coordinate and 
have a united approach before the switch to 0.19.

To start this coordinating discussion, if you have been using some of 
these, could you explain why? for what needs? Please provide examples if 
possible. I will start with myself.

* *mpizenberg/elm-touch-events*:
  That's the first package I created. I needed multitouch support, which 
was not available in knledg/touch-events.
* *mpizenberg/elm-mouse-events*:
  My main need was to get the reliable relative positions of mouse move 
events, the most efficient way possible. It meant using the 
"offsetX/offsetY" properties of mouse events, which are not exposed by 
mbr/elm-mouse-events. Example usage was a user study, demo still available 
at http://mm17-otis.pizenberg.fr .
* *mpizenberg/elm-pointer-events*:
  Eventually, after having implemented both mouse and touch behaviors for 
each of my projects, I got tired of doing the job twice each time. So this 
library is to support the web pointer events API, that inherit from mouse 
events but support mouse, touch, and others (pens, ...) pointer events. 
Unfortunately, the API is not well supported by Safari and Firefox yet 
(https://caniuse.com/#feat=pointer) so I also made a minimalist polyfill, 
compatible with elm (https://github.com/mpizenberg/elm-pep). Example usage 
at http://elm-image-annotation.pizenberg.fr/ (code at 
https://github.com/mpizenberg/demo-elm-image-annotation).

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