preact

frontend/node_modules/three/examples/jsm/nodes/lighting/LightNode.js

@@ -0,0 +1,57 @@
+import Node, { addNodeClass } from '../core/Node.js';
+import { nodeProxy } from '../shadernode/ShaderNode.js';
+import { objectPosition } from '../accessors/Object3DNode.js';
+import { cameraViewMatrix } from '../accessors/CameraNode.js';
+
+class LightNode extends Node {
+
+	constructor( scope = LightNode.TARGET_DIRECTION, light = null ) {
+
+		super();
+
+		this.scope = scope;
+		this.light = light;
+
+	}
+
+	setup() {
+
+		const { scope, light } = this;
+
+		let output = null;
+
+		if ( scope === LightNode.TARGET_DIRECTION ) {
+
+			output = cameraViewMatrix.transformDirection( objectPosition( light ).sub( objectPosition( light.target ) ) );
+
+		}
+
+		return output;
+
+	}
+
+	serialize( data ) {
+
+		super.serialize( data );
+
+		data.scope = this.scope;
+
+	}
+
+	deserialize( data ) {
+
+		super.deserialize( data );
+
+		this.scope = data.scope;
+
+	}
+
+}
+
+LightNode.TARGET_DIRECTION = 'targetDirection';
+
+export default LightNode;
+
+export const lightTargetDirection = nodeProxy( LightNode, LightNode.TARGET_DIRECTION );
+
+addNodeClass( 'LightNode', LightNode );