[pointerevents] Should pressure be set to 1 or .5 on devices that don't report it?

appsforartists has just created a new issue for 
https://github.com/w3c/pointerevents:

== Should pressure be set to 1 or .5 on devices that don't report it? 
==
Continuing a tangent from #146.

The spec currently prescribes `.5` as the pressure value for devices 
that don't report granular pressure.  Should it be changed to `1`?  

Though we haven't yet learned how that came to be, the hypothesis is 
that users on a pressure-sensitive device apply less-than-maximum 
pressure in normal usage.  (Personally, I seem to apply somewhere in 
the range of .3 - .5 on a Wacom or Surface Book.)  Since users of 
pressure devices probably aren't applying maximum pressure constantly,
 inferring .5 would treat users who can't apply pressure like 
"average" users who can.

If most stylus users are applying .4 pressure when drawing, treating 
mouse input as .5 provides a comparable experience across devices.  
Treating mouse input as 1 would likely yield thicker/darker lines for 
mouse input than for pressure-sensitive devices.

Please view or discuss this issue at 
https://github.com/w3c/pointerevents/issues/147 using your GitHub 
account

Received on Wednesday, 21 September 2016 23:12:56 UTC