This page describes the content of a CZML document. Please read Get started for an explanation of how a CZML document is put together.

HEADER

The header is the first object of a CZML file, it describes for example what kind of time interval in global will be used to display, or even how time will be interpolated during the simulation.

Implements : CZMLPrimaryObject

Extends : AbstractPrimaryObject

Example :

  {
    "id":"document",
    "version":"1.0",
    "name":"org.orekit.propagation.numerical.NumericalPropagator@ed9d034",
    "clock":{
      "interval":"2022-01-17T12:00:00Z/2022-01-18T12:00:00Z",
      "currentTime":"2022-01-17T12:00:00Z",
      "multiplier":60,
      "range":"LOOP_STOP",
      "step":"SYSTEM_CLOCK_MULTIPLIER"
      }
   }

Properties

id - String : Identification of the header

version - String : Version of Cesium to use, default : "1.0"

name - String : Name of the header, describes what have been used to build it

Clock - Clock : The clock object, describes when the study will be done.

Build

A header can be build with :

• An Id, a name, and a Clock :

Header header = new Header(name, clock);

• An id, a name, a version and a Clock :

Header header = new Header(id, name, version, clock);

General values usable

MASTER_CLOCK - Clock : The clock object used for the simulation

TIME_SCALE - TimeScale : The time scale used for the simulation.