new Cesium.VelocityOrientationProperty(position, ellipsoid)

A Property which evaluates to a Quaternion rotation based on the velocity of the provided PositionProperty.
Name Type Default Description
position Property optional The position property used to compute the orientation.
ellipsoid Ellipsoid Ellipsoid.WGS84 optional The ellipsoid used to determine which way is up.
//Create an entity with position and orientation.
var position = new Cesium.SampledProperty();
var entity = viewer.entities.add({
  position : position,
  orientation : new Cesium.VelocityOrientationProperty(position)


Gets the event that is raised whenever the definition of this property changes.
Gets or sets the ellipsoid used to determine which way is up.

readonlyisConstant : Boolean

Gets a value indicating if this property is constant.
Gets or sets the position property used to compute orientation.


Compares this property to the provided property and returns true if they are equal, false otherwise.
Name Type Description
other Property optional The other property.
true if left and right are equal, false otherwise.
Gets the value of the property at the provided time.
Name Type Description
time JulianDate optional The time for which to retrieve the value.
result Quaternion optional The object to store the value into, if omitted, a new instance is created and returned.
The modified result parameter or a new instance if the result parameter was not supplied.