WereKitten said:
A small note: the rotations are detected by accelerometers+gyroscopes+magnetic sensors apparently. I suppose the latest (earth magnetic field sensor) gives a bearing reading and keeps down the need for calibrations of the gyros. Anyway the accelerometers in the Wii are 100Hz, I don't think the rotation data for the Sony wand will be slower than that. More importantly: if I were designing a "pointer" based game I wouldn't be using exclusively the rotation data. I'd be mostly using the translation of the glowing sphere as read by the camera. |
Reading the glowing sphere movement means very little though, that's what I am getting at.
If you move the Move (lol) horitontally while pointing at the screen, but without twisting it in any way (1 dimensional movement) then you are, by 1:1 standards, pointing at a new part of the screen. If you do the same movement, but rotate the handle left or right, you could be pointing (as a line of sight down the handle of the device) at the same place all the time, or somewhere vastly different, even though the camera read the same movement in the sphere.
My point was that with the Move, the accellerometers and gyroscopes (and apparently magnetic sensors... I would guess this is like an electronic compass, which could negate some of what I have been saying if it can read tiny movements as fast as a camera, though I doubt it) are having to do the majority of the work, and need to be read constantly to determine which way the device is pointing.
The Wii remote only needs the accellerometers as a periodic check to make sure you haven't moved the remote vertically (while still pointing at the same position) as well as making sure you haven't turned the remote over while not pointing at the screen.
