添加关照、全局等高线、修改图层问题

static/sdk/three/jsm/utils/WorkerPool.js

@@ -0,0 +1,102 @@
+/**
+ * @author Deepkolos / https://github.com/deepkolos
+ */
+
+export class WorkerPool {
+
+	constructor( pool = 4 ) {
+
+		this.pool = pool;
+		this.queue = [];
+		this.workers = [];
+		this.workersResolve = [];
+		this.workerStatus = 0;
+
+	}
+
+	_initWorker( workerId ) {
+
+		if ( ! this.workers[ workerId ] ) {
+
+			const worker = this.workerCreator();
+			worker.addEventListener( 'message', this._onMessage.bind( this, workerId ) );
+			this.workers[ workerId ] = worker;
+
+		}
+
+	}
+
+	_getIdleWorker() {
+
+		for ( let i = 0; i < this.pool; i ++ )
+			if ( ! ( this.workerStatus & ( 1 << i ) ) ) return i;
+
+		return - 1;
+
+	}
+
+	_onMessage( workerId, msg ) {
+
+		const resolve = this.workersResolve[ workerId ];
+		resolve && resolve( msg );
+
+		if ( this.queue.length ) {
+
+			const { resolve, msg, transfer } = this.queue.shift();
+			this.workersResolve[ workerId ] = resolve;
+			this.workers[ workerId ].postMessage( msg, transfer );
+
+		} else {
+
+			this.workerStatus ^= 1 << workerId;
+
+		}
+
+	}
+
+	setWorkerCreator( workerCreator ) {
+
+		this.workerCreator = workerCreator;
+
+	}
+
+	setWorkerLimit( pool ) {
+
+		this.pool = pool;
+
+	}
+
+	postMessage( msg, transfer ) {
+
+		return new Promise( ( resolve ) => {
+
+			const workerId = this._getIdleWorker();
+
+			if ( workerId !== - 1 ) {
+
+				this._initWorker( workerId );
+				this.workerStatus |= 1 << workerId;
+				this.workersResolve[ workerId ] = resolve;
+				this.workers[ workerId ].postMessage( msg, transfer );
+
+			} else {
+
+				this.queue.push( { resolve, msg, transfer } );
+
+			}
+
+		} );
+
+	}
+
+	dispose() {
+
+		this.workers.forEach( ( worker ) => worker.terminate() );
+		this.workersResolve.length = 0;
+		this.workers.length = 0;
+		this.queue.length = 0;
+		this.workerStatus = 0;
+
+	}
+
+}