The WY function returns one marker’s y-axis angular velocity or the y-axis relative angular velocity between 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. |
|
Marker3 |
The name or argument number of the reference marker that will serve as the standard for direction •If omitted, then the InertiaMarker is applied. |
Formulation
:
Marker1’s angular velocity vector from the InertiaMarker
:
Marker2’s angular velocity vector from the InertiaMarker
:
y-direction unit vector of Marker3
Example
WY (body1.marker1)
WY (body1.marker1, body2.marker2)
WY (body1.marker1, body2.marker2, body3.marker3)
WY (1,2,3) <Argument: (1)body1.marker1, (2)body2.marker2, (3)body3.marker3>