# CompositeProperty

#### new Cesium.CompositeProperty()
DataSources/CompositeProperty.js 67

  A `Property` which is defined by a `TimeIntervalCollection`, where the data property of each `TimeInterval` is another Property instance which is evaluated at the provided time.

  ##### Example:

      var constantProperty = ...;
      var sampledProperty = ...;

      //Create a composite property from two previously defined properties
      //where the property is valid on August 1st, 2012 and uses a constant
      //property for the first half of the day and a sampled property for the
      //remaining half.
      var composite = new Cesium.CompositeProperty();
      composite.intervals.addInterval(Cesium.TimeInterval.fromIso8601({
          iso8601 : '2012-08-01T00:00:00.00Z/2012-08-01T12:00:00.00Z',
          data : constantProperty
      }));
      composite.intervals.addInterval(Cesium.TimeInterval.fromIso8601({
          iso8601 : '2012-08-01T12:00:00.00Z/2012-08-02T00:00:00.00Z',
          isStartIncluded : false,
          isStopIncluded : false,
          data : sampledProperty
      }));

  ##### See:

  - CompositeMaterialProperty
  - CompositePositionProperty

### Members

#### readonlydefinitionChanged : Event
DataSources/CompositeProperty.js 97

  Gets the event that is raised whenever the definition of this property changes. The definition is changed whenever setValue is called with data different than the current value.

#### intervals : TimeIntervalCollection
DataSources/CompositeProperty.js 108

  Gets the interval collection.

#### readonlyisConstant : Boolean
DataSources/CompositeProperty.js 83

  Gets a value indicating if this property is constant. A property is considered constant if getValue always returns the same result for the current definition.

### Methods

#### equals(other) → Boolean
DataSources/CompositeProperty.js 143

  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.

  ##### Returns:

  `true` if left and right are equal, `false` otherwise.

#### getValue(time, result) → Object
DataSources/CompositeProperty.js 122

  Gets the value of the property at the provided time.

  Name | Type | Description
  --- | --- | ---
  `time` | JulianDate | The time for which to retrieve the value.
  `result` | Object | optional The object to store the value into, if omitted, a new instance is created and returned.

  ##### Returns:

  The modified result parameter or a new instance if the result parameter was not supplied.