Pressure sensitive drawing on the iPad

Discussion in 'Front page news archive' started by News Bot, Jul 2, 2010.

  1. News Bot

    News Bot iFans.com News

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  2. Fike

    Fike Member

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  3. Naveen121

    Naveen121 Well-Known Member

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    Wow, that looks really cool!
  4. zrowny

    zrowny New Member

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    Wait, the iPad's pressure sensitive? Or is it simulated? Or is it a special stylus?
  5. bahamutspirit

    bahamutspirit New Member

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    It's an area of contact thing, which is actually quite accurate because the more you press something down, the more it spreads itself apart if the surface's resistance is too high to bend. The same thing can be done on the iPhone, but the surface area of the iPhone is too small so the simulation may not be correct.

    If you would like to compare this with Wacom, Wacom's solution is to find out how much the pen is being pressed against the screen, instead of trying to simulate it on the touch surface like this method.

    So both are just simulations. Real pressure sensitivity is actually trying to find out where an object is in 3D space and where the screen is... which is just too expensive to do in a consumer's device.

    That's how I understand it, but it could be something different...
  6. TREYisRAD

    TREYisRAD Member

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    I think you would need a certain stylus, like this:
    http://tenonedesign.com/sketch.php

    It has a plush tip
  7. zrowny

    zrowny New Member

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    Oh then wouldn't the stylus have to some sort of flexible conductor? Or is the touch screen accurate enough to detect the rounded tip to be touching more of the touch screen when you press harder?
    ------------------double post merged------------------
    Oh well I meant like a stylus that would detect how much the tip is pushed in or something like that so that doesn't really answer my question though.
  8. b-mac 39

    b-mac 39 Well-Known Member

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  9. Flagpole

    Flagpole Member

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    hmm interesting, is there any way that this same principal could be used to make some sort of scale application? or would you need to touch the screen with something electrically conductive?
  10. bahamutspirit

    bahamutspirit New Member

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    Bothh of the above cases...

    So the stylus has a soft and flexible conductive foam as the tip, and the touch screen is able to detect when an area of contact has widened (palm ignoring tech also uses this).

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