Sunshine (Sunshine Analysis)

Create and manage a sunshine/shadow analysis object for 3D scene shadow analysis.

Constructor

new ge3d.matter.Sunshine(options?: {}): Sunshine

Parameters (Options)

Parameter	Type	Default	Description
multiplier	Number	1600	Time multiplier for animation speed
time	Date	-	Initial time
darkness	Number	-	Shadow darkness
terrain	Boolean	true	Whether to enable terrain shadows
lighting	Boolean	true	Whether to enable globe lighting
clockRange	Cesium.ClockRange	CLAMPED	Clock range mode

Properties

Property	Type	Description
shadowMap	Cesium.ShadowMap	Shadow map object
time	Date	Current time (getter/setter)
isStart	Boolean	Whether the analysis is started
multiplier	Number	Time multiplier (getter/setter)

Methods

start

Start shadow analysis animation

start(startTime: Date, stopTime: Date, currentTime?: Date): void

pause

Pause the animation

pause(): void

proceed

Resume the paused animation

proceed(): void

stop

Stop the animation

stop(): void

clear

Clear all analysis data and reset

clear(): void

startComputeShadowRate

Start computing shadow volume ratio for specified positions

startComputeShadowRate(options: {
  positions: Cesium.Cartesian3[];
  startDate: Date;
  endDate: Date;
  step: Number;
  minHeight: Number;
  maxHeight: Number;
}): Promise<{
  total: Number;
  positions: Array<{
    lng: Number;
    lat: Number;
    alt: Number;
    rate: Number;
  }>;
}>

stopComputeShadowRate

Stop computing shadow rate

stopComputeShadowRate(): void