大屏添加cesium

public/sdk/three/jsm/offscreen/offscreen.js

@@ -0,0 +1,8 @@
+import init from './scene.js';
+
+self.onmessage = function ( message ) {
+
+	const data = message.data;
+	init( data.drawingSurface, data.width, data.height, data.pixelRatio, data.path );
+
+};