Help pinch to zoom compatible

[gunrunner45]

Did Google Just Multi-Punch Apple In The Face?

 

[numus]

Please notice in Softwareforme.com's reponse he mentioned it is a pseudo way... It isn't a tru multitouch approach (because that has to be built into the drivers for the device usually.. or atleast patched into the code and/or kernel)...
Here is a "theoretical" way to do it (this is purely theory based and has never been attempted or applied as far as i am aware)...
the software registers the first touch point.. isolates the location and then ignores it... It then sees a 2nd touch.. isolates it and ignores it.. it then rapidly will look between the 2 isolated points (one at a time) and tracks what those points are doing.... Then it interpets that as a command and implements the function... This isn't actual multitouch because it isn't simlatenously tracking both positions at the same time... it is tracking on a single position at a time and switching between them very fast...


If you want a primary exmaple of how this "could" work... Hold down the J key on your keyboard in wordpad or other program... you will start to see a long string of J writing in the text field.. then while holding down the j key press the f key then release the f key while still holding down the j key.. you will notice an f will be inputted after the string of the j's but after you lift your finger off the f key, the j's do not continue... now with the j still pressed hit the d key and hold it down... now you will start to see a string of d's input eventhough you are pressing both the d and j key... now lift your finger off the d key... notice how the d stops inputting while the j is still held down... now hold the d key down to get a string of d's and lift your finger off the j key and press it and hold it down again while still holding down the d key.. you will notice the j's start back up with a long string eventhough you have the d key depressed also.. finally lift both fingers off the keyboard...

Your keyboard (atleast the majority of them) do not support multiple inputs (what we call multi-touch).. if you hold j down then hold d down, let j go and hold it down again, let d go and hold it down again you can see how you get multiple inputs (both d's and j's) eventhough it is only allowing 1 input at a time... now imagine you can decrease the time it takes between lifitng your finger off the key and pressing it down again.. it will start to merge them into 1 set of data... this is a way to get multi touch like features without actually having the support of track inputs simaltaenously....

The final visualization i can give you is this...
Get 2 quarters... but then between your thumb and index finger and start rubbing the quarters together really fast.. you will start to see a 3rd quarter appear inbetween the 2... what is happening is your eye is starting to merge the images of the quarters moving past each other at a rate faster then you can interepret and thus are creating a 3rd image that is a combination of the other 2... This is to show you 2 seperate inputs, when increased in frequency can merge into a single input...

 

[CriticalCritic]

Please notice in Softwareforme.com's reponse he mentioned it is a pseudo way... It isn't a tru multitouch approach (because that has to be built into the drivers for the device usually.. or atleast patched into the code and/or kernel)...
Here is a "theoretical" way to do it (this is purely theory based and has never been attempted or applied as far as i am aware)...
the software registers the first touch point.. isolates the location and then ignores it... It then sees a 2nd touch.. isolates it and ignores it.. it then rapidly will look between the 2 isolated points (one at a time) and tracks what those points are doing.... Then it interpets that as a command and implements the function... This isn't actual multitouch because it isn't simlatenously tracking both positions at the same time... it is tracking on a single position at a time and switching between them very fast...

I saw something else yesterday that was referred to as "pin zoom"

The setup was that you tap one point on the screen where you want to zoom in, then place the finger next to where you "pinned" and slide your finger towards or away from that saved static point.

It is part of an app called Xscope (that apparently is not available to 1.5). Check it out on youtube. It's a browser for android that boasts true multitouch zoom, double-tap zoom, AND "pin zoom"