The WDTX function returns the x-axis angular acceleration of one marker or the x-axis relative angular acceleration 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 the comparison marker for a relative calculation • If omitted, then the InertiaMarker is applied. |
Marker3 |
The name or argument number of the marker for axis definition • If omitted, then the InertiaMarker is applied. |
Marker4 |
A standard marker for calculating acceleration • The formula calculates acceleration relative to the angular velocity and the angular acceleration of Marker4. • Marker4 must be the same value as Marker3. If omitted, then the InertiaMarker is applied. |
Formulation
: Angular acceleration vector of Marker1 relative to the angular velocity and angular acceleration of Marker4
: Angular acceleration vector of Marker2 relative to the angular velocity and angular acceleration of Marker4
: x-direction unit vector of Marker3
Example
WDTX (body1.Marker1, body2.Marker2)
WDTX (body1.Marker1, body2.Marker2, body3.Marker3)
WDTX (body1.Marker1, body2.Marker2, body3.Marker3, body3.Marker3)
WDTX (1,2,3,3) <Argument (1)body1.Marker1, (2)body2.Marker2, (3)body3.Marker3>