大屏添加cesium

public/sdk/three/jsm/nodes/fog/FogNode.js

@@ -0,0 +1,48 @@
+import Node, { addNodeClass } from '../core/Node.js';
+import { positionView } from '../accessors/PositionNode.js';
+import { addNodeElement, nodeProxy } from '../shadernode/ShaderNode.js';
+
+class FogNode extends Node {
+
+	constructor( colorNode, factorNode ) {
+
+		super( 'float' );
+
+		this.isFogNode = true;
+
+		this.colorNode = colorNode;
+		this.factorNode = factorNode;
+
+	}
+
+	getViewZNode( builder ) {
+
+		let viewZ;
+
+		const getViewZ = builder.context.getViewZ;
+
+		if ( getViewZ !== undefined ) {
+
+			viewZ = getViewZ( this );
+
+		}
+
+		return ( viewZ || positionView.z ).negate();
+
+	}
+
+	setup() {
+
+		return this.factorNode;
+
+	}
+
+}
+
+export default FogNode;
+
+export const fog = nodeProxy( FogNode );
+
+addNodeElement( 'fog', fog );
+
+addNodeClass( 'FogNode', FogNode );