Is it possible to read the magnitude of pressure on any specific touch?
Thanks
No. There is no pressure sensitivity on iPhone/iPod/iPad devices, in addition to add insult to injury there’s no low level access to read the actual touch pixels/area itself either, instead you must rely on Apples own libraries to interpret the input.
At one point Ten One claimed to have written a low level library for the iPhone to allow such niceties as pseudo pressure sensitivity (captured through seeing how many contiguous pixels were being hit in a zone, more = higher pressure), and also offering filtering to e.g. filter out palm/non stylus contact (these areas would be much larger than a pogo stylus or the like, so you could easily ignore them, rather than treating them as multitouch). However nothing (so far) has come of this : Designer's Blog - bits of info tumbling from the mainframe
Thanks for such a detailed answer, Per! You were of much help.
It’s a shame that Apple doesn’t give access to such basic input abilities.
No wonder nothing has come of that. A big fatty is going to register higher pressure than a stringy child, despite the latter applying more force?
Doesn’t work.
Well pressure curves have always been editable in painting apps, everyone uses different levels of pressure to draw with, even with a Wacom you can easily adjust this which means that wouldn’t be an issue, but apart from that heir demo makes it looks like thy were really trying to get it to work with their Pogo Sketch stylus, in which case finger size wouldn’t factor.