RhinoCommon API
QuaternionDistanceTo Method | 
            Computes the distance or norm of the difference between this and another quaternion.
            
Namespace: Rhino.Geometry
Assembly: RhinoCommon (in RhinoCommon.dll)
Since: 5.0
public double DistanceTo( Quaternion q )
Public Function DistanceTo ( q As Quaternion ) As Double
Parameters
- q
 - Type: Rhino.GeometryQuaternion
Another quaternion. 
Return Value
Type: Double(this - q).Length.