大屏添加cesium

public/sdk/three/jsm/lights/IESSpotLight.js

@@ -0,0 +1,25 @@
+import { SpotLight } from 'three';
+
+class IESSpotLight extends SpotLight {
+
+	constructor( color, intensity, distance, angle, penumbra, decay ) {
+
+		super( color, intensity, distance, angle, penumbra, decay );
+
+		this.iesMap = null;
+
+	}
+
+	copy( source, recursive ) {
+
+		super.copy( source, recursive );
+
+		this.iesMap = source.iesMap;
+
+		return this;
+
+	}
+
+}
+
+export default IESSpotLight;