The AY function returns the cumulative rotation angle on the y-axis for one marker’s InertiaMarker or the cumulative rotation angle on the y-axis for two markers.
Format
Arguments definition
|
Marker1 |
The name or argument number of a marker to be calculated. |
|
Marker2 |
The name or argument number of a marker to be calculated. If omitted, then the InertiaMarker is applied. |
Formulation
:
z-direction unit vector of Marker1
:
x-direction unit vector of Marker2
:
z-direction unit vector of Marker2
Here, ThetaY is utilized to calculate the cumulative rotation angle on the y-axis for two markers.
If y-axis for two markers is deviated, ThetaY becomes inaccurate result.
Example
AY (body1.Marker1)
AY (body1.Marker1, body2.Marker2)
AY (1,2) <Argument: (1)body1.Marker1, (2)body2.Marker2 >