I have 3 axis accelerometer and 3 axis orientation sensor in my device. So i can get 0 - 360 deg on X, Y and Z.
When I draw in GEM a rectangle, I am able to rotate it with each of 3 axes, but only separately. When I try it with all three axes together it has strange movements, so I guess it has something with gimbal lock.
hello,
rotateXYZ is doing : rotation X then rotation Y then rotation Z
this is not the same than : rotation Z rotation Y rotation X
So, depending on how works your orientation sensors, you could have to change the rotation order.
you can try, using 3 rotateXYZ object.
cheers c
Le 09/02/2013 14:45, Fero Kiraly a écrit :
I have 3 axis accelerometer and 3 axis orientation sensor in my device. So i can get 0 - 360 deg on X, Y and Z.
When I draw in GEM a rectangle, I am able to rotate it with each of 3 axes, but only separately. When I try it with all three axes together it has strange movements, so I guess it has something with gimbal lock.
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I believe it is (unfortunately) not as simple as that. When you rotate with [rotateXYZ], the three axis are not always perpendicular to each other. For instance, if you set Y to 90, the X and the Z rotate around the same axis.
However, the gyroscope (at least the one from Wiimote MotionPlus and most likely also the one from your phone) consists of three separate sensor which are perpendicular to each other at any time.
If I understand Fero correctly, he would like to use the sensors so he can control an object in Gem that follows exactly the orientation of his phone. I also tried that once with a Wiimote and Gem but I couldn't wrap my head around the two concepts of [rotateXYZ] and the gyro sensors.
Anyone enlightened might be able to shed some light on this confusion?
Roman
On Sam, 2013-02-09 at 15:18 +0100, Cyrille Henry wrote:
hello,
rotateXYZ is doing : rotation X then rotation Y then rotation Z
this is not the same than : rotation Z rotation Y rotation X
So, depending on how works your orientation sensors, you could have to change the rotation order.
you can try, using 3 rotateXYZ object.
cheers c
Le 09/02/2013 14:45, Fero Kiraly a écrit :
I have 3 axis accelerometer and 3 axis orientation sensor in my device. So i can get 0 - 360 deg on X, Y and Z.
When I draw in GEM a rectangle, I am able to rotate it with each of 3 axes, but only separately. When I try it with all three axes together it has strange movements, so I guess it has something with gimbal lock.
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
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Cyrille Henry -
Fero Kiraly -
Roman Haefeli