https://github.com/WWBN/AVideo/issues/8713

node_modules/three/examples/jsm/nodes/utils/SwitchNode.js

@@ -0,0 +1,99 @@
+import { Node } from '../core/Node.js';
+
+function SwitchNode( node, components ) {
+
+	Node.call( this );
+
+	this.node = node;
+	this.components = components || 'x';
+
+}
+
+SwitchNode.prototype = Object.create( Node.prototype );
+SwitchNode.prototype.constructor = SwitchNode;
+SwitchNode.prototype.nodeType = 'Switch';
+
+SwitchNode.prototype.getType = function ( builder ) {
+
+	return builder.getTypeFromLength( this.components.length );
+
+};
+
+SwitchNode.prototype.generate = function ( builder, output ) {
+
+	var type = this.node.getType( builder ),
+		node = this.node.build( builder, type ),
+		inputLength = builder.getTypeLength( type ) - 1;
+
+	if ( inputLength > 0 ) {
+
+		// get max length
+
+		var outputLength = 0,
+			components = builder.colorToVectorProperties( this.components );
+
+		var i, len = components.length;
+
+		for ( i = 0; i < len; i ++ ) {
+
+			outputLength = Math.max( outputLength, builder.getIndexByElement( components.charAt( i ) ) );
+
+		}
+
+		if ( outputLength > inputLength ) outputLength = inputLength;
+
+		// split
+
+		node += '.';
+
+		for ( i = 0; i < len; i ++ ) {
+
+			var idx = builder.getIndexByElement( components.charAt( i ) );
+
+			if ( idx > outputLength ) idx = outputLength;
+
+			node += builder.getElementByIndex( idx );
+
+		}
+
+		return builder.format( node, this.getType( builder ), output );
+
+	} else {
+
+		// join
+
+		return builder.format( node, type, output );
+
+	}
+
+};
+
+SwitchNode.prototype.copy = function ( source ) {
+
+	Node.prototype.copy.call( this, source );
+
+	this.node = source.node;
+	this.components = source.components;
+
+	return this;
+
+};
+
+SwitchNode.prototype.toJSON = function ( meta ) {
+
+	var data = this.getJSONNode( meta );
+
+	if ( ! data ) {
+
+		data = this.createJSONNode( meta );
+
+		data.node = this.node.toJSON( meta ).uuid;
+		data.components = this.components;
+
+	}
+
+	return data;
+
+};
+
+export { SwitchNode };