fix: 显示的bug

public/lib/potree/potree.js

@@ -59213,7 +59213,7 @@
 	        }
 	    },
 	     
-
+	  
 
 	    getBestCount : function(name, minCount=1,maxCount=6, durBound1 = 1.2, durBound2 = 10, ifLog){
 	       
@@ -146626,21 +146626,23 @@ ENDSEC
 	                                    boxMap[tileset.root.id].applyMatrix4(lastRootTransform);
 	                                }
 	                            }
-	                            if (lastCameraTransform == null) {
-	                                lastCameraTransform = new Matrix4().copy(camera.matrixWorld);
+	                            if (this.lastCameraTransform == null) { 
+	                                this.lastCameraTransform = new Matrix4().copy(camera.matrixWorld);
 	                            }
 	                            else {
-	                                const cameraChanged = !camera.matrixWorld.equals(lastCameraTransform) ||
+	                                const cameraChanged = !camera.matrixWorld.equals(this.lastCameraTransform) ||
 	                                    !(camera.aspect == lastCameraAspect);
 	                                if (cameraChanged) {
 	                                    timer = 0;
 	                                    tileset._frameNumber++;
 	                                    camera.getWorldPosition(lastCameraPosition);
-	                                    lastCameraTransform.copy(camera.matrixWorld);
+	                                    this.lastCameraTransform.copy(camera.matrixWorld);
 	                                    tilesetUpdate(tileset, renderMap, renderer, camera);
 	                                }
 	                            }
-	                        }
+	                        }/* else{
+	                            console.log('11')
+	                        } */
 	                    },
 	                    dispose: function () {
 	                        disposeFlag = true;
@@ -153169,15 +153171,15 @@ ENDSEC
 	        
 
 
-
-			this.update(this.clock.getDelta(), timestamp);
+	        let deltaTime = this.clock.getDelta();
+			this.update(deltaTime, timestamp);
 	        this.magnifier.render();
 	        this.render(); 
 	         
-	         
+	        
 	        this.objs.children.forEach(e=>{
 	            if(e.fileType == '3dTiles'){
-	                e.runtime.update(this.clock.getDelta(), this.renderer, this.mainViewport.camera);
+	                e.runtime.update(deltaTime, this.renderer, this.mainViewport.camera);
 	            }
 	        }); 
 	         
@@ -153696,9 +153698,10 @@ ENDSEC
 	                options: {
 	                    //dracoDecoderPath: '../utils/loaders/DRACOLoader/draco',
 	                    //basisTranscoderPath: '../utils/loaders/KTX2Loader/basis',
-	                    maximumScreenSpaceError: 48,
-	                    maxDepth: 100,
+	                    maximumScreenSpaceError: 700,
+	                    maxDepth: 20,
 	                    showAllTile: true,
+	                    maximumMemoryUsage: 16, //缓存大小
 	                },
 	            });
 	            console.log(result);