VZ

 

The VZ function returns the z-direction velocity for one marker or the relative velocity of two markers in the z-direction.

 

Format

 

Arguments definition

Marker1

The name or argument number of a marker to be calculated

Marker2

The name or argument number of the marker to use in the 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 velocity

     The formula measures the velocity relative to Marker4’s angular velocity.

     Marker4 must be the same value as Marker3. If omitted, then the InertiaMarker is applied.

 

Formulation

: Velocity vector of the Marker1 relative to Marker4’s angular velocity

: Velocity vector of the Marker2 relative to Marker4’s angular velocity

: z-direction unit vector of Marker3

 

Example

VZ (body1.marker1)

VZ (body1.marker1, body2.marker2)

VZ (body1.marker1, body2.marker2, body3.marker3)

VZ (body1.marker1, body2.marker2, body3.marker3, body3.marker3)

VZ (1,2,3,3) <Argument: (1)body1.marker1, (2)body2.marker2, (3)body3.marker3>