Emulator

Although I don't have this game but from your description I think you just have to
use roll (set max to 90 degrees or so) on an analog stick.

It doesn't look like an IR problem.

Roll doesn't work, anyuanx. I've already tried that loooooong time ago. This is a
very old issue. I just decided to report it now, but its been there for ages.

So what movements were you supposed to perform on that bone-rotation? I mean with a
real wiimote.

From your description, you said you just needed to "hold A & B"? That's all?
I think you have to some special movement like roll left 45 degrees or so, don't you?

You have to point the wiimote to the screen, grab the bones by holding A and B
buttons (like a tweezer) and twist it like a door knob. Doing this, the bone rotates
like a clock pointer to the left or to the right. Here is a video showing what I mean.

http://www.youtube.com/watch?v=fn3-JHlRcZI

btw, did you read my whole explanation and the .cpp code also?

Thanks for trying to help on this. ^^

Yes, I did read your explanation and the code, and I stll think it has nothing to do
with IR. You just have to try "roll" with an appropriate degree like 60, and you have
to do this on an analog stick.

Of course it has to be with an analog stick. What I've been trying to say is that
this issue is as old as dolphin's wii emulation. I test dolphin since r27, ayuanx.
Doing "roll" with an analog stick does nothing with the bones because "roll" only
affects the acelerometer of the wiimote, but not the IR camera-sensor-whatever. If
only you had the game to test it...

btw, when you calibrate the wiimote on the real hardware, there are 2 dots on the tv
screen, and you can rotate then and zoom then. Most games don't use this, but uses
the accelerometer as reference instead. I hope I made this clear now ;)

Well, Could you have a test on this?

1. Apply this patch http://forums.dolphin-emu.com/attachment.php?aid=1749
2. Bind Tilt & Swing to Analog Stick
3. Set Roll L/R to 90 degrees, set Pitch U/D to Free Swing
4. Do that twist thing while pressing analog stick to left or right

Forget about the patch in step 1, just update to r4657 which already contains this patch.

Here is some feedback, ayuanx.

First of all, I just realized that you don't have to own Trauma Center SO to test
this thing. You can just load any wii game and press the HOME button to test the
rotation by looking at the little hand on the screen.

After some testing, I can confirm that if you set the roll to 90º, bind it to an
analog stick, set pitch to freeswing and try to rotate the IR dots, the result is the
described at the picture above:

http://i43.photobucket.com/albums/e397/rodiabloalmeida/IR_dots_rotate_in_this_area.jpg

You're almost there, ayuanx. Thanks very much for trying to solve this old issue.

rodiabloalmeida, I need you to do some tests with a Real Wiimote.

With a real wiimote, in the home menu, when you roll the real wiimote to left/right,
what will happen to the hand cursor on screen? Does its coordination change in this
process?

I mean can you make the hand cursor rotate while maintaining its coordination on the
screen?

I suspect that you can't rotate the hand cursor without changing its coordination,
unless the hand cursor lies right in the center of the screen, is it so?

I can not do this test you are asking me to do until February 2010 because when my
nephew goes to school vacation, I usually borrow my Wii for him and he lives in
another city. But I can almost assure you that when you rotate the wiimote, the hand
rotates together and you can even move the pointer around the screen with the hand
rotated without losing control of it. I mean, the hand follows the IR position on the
screen (the spot you're pointing the wiimote to) and can do this with the hand in any
position ( the hand's finger ponting to the bottom of the screen, pointing to the
left, to the right or whatever direction you points the hand's finger to).

It's just like that red laser pointers used in slide presentations, but with a shape
of a hand instead of just a red circle dot. The behavior is the same.