kotlin-cesium-engine/cesium.engine/VelocityVectorProperty

VelocityVectorProperty

external class VelocityVectorProperty(position: PositionProperty? = definedExternally, var normalize: Boolean = definedExternally)(source)

A Property which evaluates to a Cartesian3 vector based on the velocity of the provided PositionProperty.

//Create an entity with a billboard rotated to match its velocity.
const position = new SampledProperty();
position.addSamples(...);
const entity = viewer.entities.add({
  position : position,
  billboard : {
    image : 'image.png',
    alignedAxis : new VelocityVectorProperty(position, true) // alignedAxis must be a unit vector
  }
}));

Parameters

position

The position property used to compute the velocity.

See also

Online Documentation

Constructors

VelocityVectorProperty

constructor(position: PositionProperty? = definedExternally, normalize: Boolean = definedExternally)

Properties

definitionChanged

val definitionChanged: DefaultEvent

Gets the event that is raised whenever the definition of this property changes.

val isConstant: Boolean

Gets a value indicating if this property is constant.

var normalize: Boolean

Whether to normalize the computed velocity vector. Default value - true

var position: Property?

Gets or sets the position property used to compute the velocity vector.

Functions

fun getValue(time: JulianDate? = definedExternally, result: Cartesian3? = definedExternally): Cartesian3

Gets the value of the property at the provided time.